Service Manual2004 DIAGNOSTIC INFORMATION AND PROCEDURES DIAGNOSIS

Tacuma-Rezzo

DIAGNOSTIC INFORMATION AND PROCEDURES DIAGNOSIS

BASIC KNOWLEDGE REQUIRED

You must be familiar with some basic electronics to use this section of the Service Manual. They will help you to follow diagnostic procedures.

Notice : Lack of the basic knowledge of this transaxle when performing diagnostic procedures could result in incorrect diagnostic performance or damage to trans-axle components.

Do not, under any circumstances, attempt to diagnose a transaxle problem without this basic knowledge.

Notice : If a wire is probed with a sharp instrument and not properly sealed afterward, the wire will corrode and an open circuit will result.

Diagnostic test probes are now available that allow you to probe individual wires without leaving the wire open to the environment. These probe devices are inexpensive and easy to install, and they permanently seal the wire from corrosion.

Special Tools

You should be able to use a Digital Volt Meter (DVM), a circuit tester, jumper wires or leads and a line pressure gauge set.

The functional check procedure is designed to verify the correct operation of electronic components in the trans-axle.

This will eliminate the unnecessary removal of transaxle components.

FUNCTIONAL CHECK PROCEDURE

Begin with the Functional Check Procedure which provides a general outline of how to diagnose automatic transaxle. The following functional check procedure will indicate the proper path of diagnosing the transaxle by describing the basic checks and then referencing the locations of the specific checks.

Check the fluid level according to the Fluid Level Service Procedure.
Check the transaxle for fluid leaks.
Check if the transaxle fluid is not burnt by color and smell.
Ensure that the transaxle is not in Limp Home Mode(LHM).
Check the battery terminals and the ground connections for corrosion or looseness.
Check that the cooler flow is not restricted.
Check all electrical connections for tightness.
Use on-board diagnostic tool or a scan tool to see if any transaxle trouble codes have been set. Refer to the appropriate "Diagnostic Trouble Code (DTC)" information and repair the vehicle as directed. After repairing the vehicle, perform the road test and verify that the code has not set again.
Perform the Electrical/Garage Shift Tests.
Perform the Road Test Procedure in this section.
Inspect the oil and check for metal or other contaminants in the oil pan.

LINE PRESSURE CHECK PROCEDURE

The 4HP 16 A/T uses a trochoid type oil pump to produce hydraulic prssure, and a pressure control solenoid (solenoid 1) to control that pressure at the pressure regulator valve, after it leaves the pump. The transaxle pressure control solenoid is controlled by an electrical signal that ranges from 0 to 12 volts corresponds to minimum line pressure (approx. 89.9 to 124.7 psi (6.2 to 8.6 bar)) and 0 volt corresponds to a maximum line pressure (approx. 221.9 to 252.4 psi (15.3 to 17.4 bar)) in all range.

Line pressures are calculated for two sets of gear ranges - Drive-Park-Neutral and Reverse. This allow the transaxle line pressure to be appropriate for different pressure needs in different gear ranges:

Gear Range	Solenoid 1	RPM	Pressure
. Drive, Reverse	Off	2,500	221.9~252.4 psi (15.3~17.4 bar)
. Drive, Reverse	On	2,500	17.4~269.8 psi (1.2~18.6 bar)
. Neutral, Park	Off	2,500	221.9~252.4 psi (15.3~17.4 bar)
. Neutral, Park	On	2,500	89.9~269.8 psi (6.2~18.6 bar)

Before performing a line pressure check, verify that the pressure control solenoid is receiving the correct electrical signal from the TCM:

Install a scan tool
Start the engine and set parking brake
Check for a stored pressure control solenoid diagnostic trouble code, and other diagnostic trouble codes.
Repair vehicle if necessary

Inspect

Fluid level
Manual linkage

Install or connect

Scan tool(scanner)
Oil pressure gauge at line pressure port (clutch B or E ports on transaxle case)

5. Put gear selector in Park and set the parking brake.

6. Start engine and allow it to warm up at idle.

7. Access the "solenoid 1 Control Mode"on the scanner.

8. Switching solenoid 1 ON/OFF, accelerating the engine to 2,500rpm, and then read the line pressure at the each gear.

9. Compare data to the Drive-Park-Neutral line pressure chart below.

Notice : Total test running time should not exceed 2 minutes, or transaxle damage could occur.

Caution : Brake must be applied at all times to prevent unexpected vehicle motion.

If pressure readings differ greatly from the line pressure chart, refer to the Diagnosis Charts contained in this section.

Notice : Clutch damage may occur.

The scanner is only able to control the pressure control solenoid in Park and Neutral with the vehicle stopped. This protects the clutches from extremely high or low pressures in Drive or Reverse rang.

Gear Range	Solenoid	Line Pressure	B Port	E Port
Park/Neutral	ON	LOW	90~124.7 psi (6.2~8.6 bar)	.
Park/Neutral	OFF	HIGH	221.9~252.3 psi (15.3~17.4 bar)	.
Reverse	ON	LOW	90~124.7 psi (6.2~8.6 bar)	.
Reverse	OFF	HIGH	221.9~252.3 psi (15.3~17.4 bar)	.
Drive	ON	LOW	.	90~124.7 psi (6.2~8.6 bar)
Drive	OFF	HIGH	.	137.7~162.4 psi (9.5~11.2 bar)
3	ON	LOW	90~124.7 psi (6.2~8.6 bar)	90~124.7 psi (6.2~8.6 bar)
3	OFF	HIGH	221.9~252.3 psi (15.3~17.4 bar)	137.7~162.4 psi (9.5~11.2 bar)
2	ON	LOW	.	90~124.7 psi (6.2~8.6 bar)
2	OFF	HIGH	.	137.7~162.4 psi (9.5~11.2 bar)
1	ON	LOW	90~124.7 psi (6.2~8.6 bar)	.
1	OFF	HIGH	221.9~252.3 psi (15.3~17.4 bar)	.

CLUTCH PLATE DIAGNOSIS

Composition plates

Dry the plate and inspect the plates for the following conditions :

Pitting
Flaking
Wear
Glazing
Cracking
Charring

Chips or metal particles embedded in the lining.

Replace a composition plate which shows any of these conditions.

Steel Plates

Wipe the plates dry and check the plates for heat discoloration. If the surfaces are smooth, even if colorsmear is indicated, you can reuse the plate. If the plate is discolored with hot spots or if the surface is scuffed, replace the plate.

Important : If the clutch shows evidence or extreme heat or burning, replace the springse

Causes of Burned Clutch Plates

The following conditions can result in a burned clutch plate:

Incorrect usage of clutch plates.
Engine coolant in the transaxle fluid.
A cracked clutch piston.
Damaged or missing seals.
Low line pressure.
Valve problems.

– The valve body face is not flat

– Porosity between channels

– The valve bushing clips are improperly installed

– The check balls are misplaced

The seal rings are worn or damaged

Engine Coolant in Transaxle

Notice : Antifreeze will deteriorate the O-ring seals and the glue used to bond the clutch material to the pressure plate. Both conditions may cause transaxle damage.

Perform the following steps if the transaxle oil cooler has developed a leak, allowing engine coolant to enter the transaxle:

Because the coolant will attach to the seal material causing leakage, disassemble the transaxle and replace all rubber type seals.
Because the facing material may become separated from the steel center portion, replace the composition faced clutch plate assemblies.
Replace all nylon parts including washers.
Replace the torque converter.
Thoroughly clean and rebuild the transaxle, using new gaskets and oil filter.
Flush the cooler lines after you have properly repaired or replaced the transaxle.

COOLER FLUSHING AND FLOW TEST

Notice : You must flush the cooler whenever you receive a transaxle for service. Cooler flushing is essential for SRTA installation, major overhaul, whenever you replace a pump or torque converter, or whenever you suspect that the fluid has been contaminated.

After filling the transaxle with fluid, start the engine and run for 30 seconds. This will remove any residual moisture from the oil cooler. Disconnect the return line at the transaxle and observe the flow with the engine running. If the fluid flow is insufficient, check the fluid flow by disconnecting the feed line at the cooler. Observe the flow with the engine running.

If the flow from the cooler return line at the transaxle is insufficient, check the flow rate from the feed line to the cooler. BLockage exists in the transaxle or the cooler.
If the flow from the transaxle feed line to the cooler is insufficient, the transaxle is the cause of the fluid flow problem.
If the flow the transaxle feed line to the cooler is insufficient, but flow from the cooler return line to the trans-axle is insufficient, inspect the cooler pipes and fittings. Then repeat the cooler flushing procedure. If the flow is still insufficient, replace the cooler.

TRANSAXLE FLUID LEVEL SERVICE PROCEDURE

This procedure is to be used when checking a concern with the fluid level in a vehicle. A low fluid level will result in slipping and loss of drive/ reverse or delay on engagement of drive/ reverse when the vehicle is cold.

The vehicle is first checked for transaxle diagnostic messages on the scan tool. If the oil level is low, it is possible to register a vehicle speed signal fault.

The vehicle is to be test driven to determine if there is an abnormal delay when selecting drive or reverse, or loss of drive. One symptom of low fluid level is a momentary loss of drive when driving the vehicle around a corner. Also when the transaxle fluid level is low, a loss of drive may occur when the transaxle fluid temperature is low. When adding or changing transaxle fluid use only ESSO LT 71141 or TOTAL ATF H50235. The use of incorrect fluid will cause the performance and durability of the transaxle to be severely degraded.

Fluid Level Diagnosis Procedure

If the vehicle is at operating temperature allow the vehicle to cool down for two hours, but no greater than four hours. Or if the vehicle is at cool status, start the engine and allow the engine to idle for approximately 5 minutes (825~875rpm), if possible, drive the vehicle for a few kilometers (N-D, N-R, shift until two gear). This will allow the transaxle to be within the correct temperature range. Transaxle fluid level should be checked at temperature 20 to 45°C (68 to 113°F).

Caution : Removal of the fluid filler plug when the transaxle fluid is hot may cause injury if fluid drains from the filler hole.

2. Switch off accessories, especially air conditioner, heater.

3. With the brake pedal pressed, move the gear shift control lever through the gear ranges, pausing a few seconds in each range. Return the gearshift lever to P(Park). Turn the engine OFF.

4. Park the vehicle on a hoist, inspection pit or similar raised level surface. The vehicle must be level to obtain a correct fluid level measurement.

5. Place a fluid container below the fluid filler plug.

6. Clean all dirt from around the fluid filler plug.

Remove the fluid filler plug. Clean the filler plug and check that there is no damage to the "O" ring.

If fluid drains through the filler hole the transaxle may have been overfilled. When the fluid stops draining the fluid level is correct. Install the fluid filler plug and tighten it to 45N3m(34 lb-ft).
If fluid does not drain through the filler hole, the transaxle fluid level may be low. Lower the vehicle, and start the vehicle in P(Park) with the parking brake and the brake applied. With the engine idling, move the gear shift lever through the gear ranges, pausing a few seconds in each range and adding the fluid until gear application is felt. Return the gear shift lever to P(Park). Turn the engine OFF and raise the vehicle. Check if the fluid level is aligned with the bottom of the filler hole. If not, add a small quantity of fluid to the correct level. Install the fluid filler plug and tighten it to 45N3m(34 lb-ft).

7. When the fluid level checking procedure is completed, wipe any fluid around the filler plug with a rag or shop towel.

Fluid Level Set After Service

Depending on the service procedure performed, add the following amounts of fluid through the filler plug hole prior to adjusting the fluid level:

Oil pan removal 4liters (4.23quarts)

Converter removal 2 liters ( 2.11 quarts)

Overhaul 6.9 ± 0.2liers (7.3± 0.2quarts)

Oil drain plug removal 4liters (4.23 quarts)

Follow steps 1 through 4 of the Fluid Level Diagnosis Procedure.
Clean all dirt from around the fluid filler plug. Remove the fluid filler plug. Clean the filler plug and check that there is no damage to the "O" ring.
Lower the vehicle with the filler plug still removed and start the vehicle in P(Park) with the parking brake and the brake applied. With the engine idling, move the gear shift lever through the gear ranges, pausing a few seconds in each range and adding the fluid until gear application is felt. Then add an additional 0.5 liters of fluid. Return the gear shift lever to P(Park). Turn the engine OFF and raise the vehicle. Install the fluid filler plug and tighten it to 45N3m (34 lb-ft).
Drive the vehicle at 2.2 miles(3.5km) to 2.8 miles(4.5 km) with light throttle so that the engine does not exceed 2500 rpm. This should result in the transaxle temperature being in the range 20 to 45°C (68 to 11°F). With the brake applied, move the shift lever through the gear ranges, pausing a few seconds in each range at the engine idling.
Return the gear shift lever to P(Park). Turn the engine OFF and raise the vehicle on the hoist, if applicable, ensuring the vehicle is level. When the three minutes passed after the engine stopped, remove the filler plug. Check if the fluid level is aligned with the bottom of the filler hole. If not, add a small quantity of fluid to the correct level. Install the fluid filler plug and tighten it to 45N•m (34 lb-ft).
Wipe any fluid around the filler plug with a rag or shop towel.

Fluid Leak Diagnosis and Repair

The cause of most external leaks can generally be Located and repaired with the transaxle in the vehicle.

Methods for Locating Leaks

General Method

Verify that the leak is transaxle fluid.
Thoroughly clean the suspected leak area.
Drive the vehicle for approximately 25 km (15 miles) or until the transaxle reaches normal operating temperature (88°C, 190°F).
Park the vehicle over clean paper or cardboard.
Turn the engine OFF and look for fluid spots on the paper.
Make the necessary repairs to correct the leak.

Powder Method

Thoroughly clean the suspected leak area.
Apply an aerosol type powder (foot powder) to the suspected leak area.
Drive the vehicle for approximately 25 km (15 miles) or until the transaxle reaches normal operating temperature (88°C, 190°F).
Turn the engine OFF.
Inspect the suspected leak area and trace the leak path through the powder to find the source of the leak.
Make the necessary repairs.

Dye and Black Light Method

Add dye to the transaxle though the transaxle fluid filler plug. Follow the manufacturer's recommendation for the amount of dye to be used.
Use the black light to find the fluid leak.
Make the necessary repairs.

Repairing the Fluid Leak

Once the leak point is found the source of the leak must be determined. The following list describes the potential causes for the leak:

Fasteners are not torqued to specification.
Fastener threads and fastener holes are dirty or corroded.
Gaskets, seals or sleeves are misarranged, damaged or worn.
Damaged, warped or scratched seal bore or gasket surface.
Loose or worn bearing causing excess seal or sleeve wears.
Case or component porosity.
Fluid level is too high.
Plugged vent or damaged vent tube.
Water or coolant in fluid.
Fluid drain back holes plugged.

ELECTRICAL/GARAGE SHIFT TEST

This preliminary test should be performed before a hoist or road test to make sure electronic control inputs is connected and operating. If the inputs are not checked before operating the transaxle, a simple electrical condition could be misdiagnosed as a major transaxle condition.

A scan tool provides valuable information and must be used on the automatic transaxle for accurate diagnosis.

Move gear selector to P (Park) and set the parking brake.
Connect scan tool to Data Link Connector (DLC) terminal.
Start engine.
Turn the scan tool ON.
Verify that the appropriate signals are present. These signals may include:

ENGINE SPEED
VEHICLE SPEED
THROTTLE POSITION
TRANSAXLE GEAR STATE
GEAR SHIFT LEVER POSITION
TRANSAXLE FLUID TEMPERATURE
CLOSED THROTTLE POSITION LEARN
OPEN THROTTLE POSITION LEARNT
CLOSED ACCEL. PEDAL POSITION LEARNT
OPEN ACCEL. PEDAL POSITION LEARNT
A/C COMPRESSOR STATUS
MODE SWITCH
THROTTLE POSITION VOLTAGE
GEAR SHIFT LEVER POSITION VOLTAGE
TRANS. FLUID TEMPERATURE VOLTAGE
A/C SWITCH
MODE SWITCH VOLTAGE
BATTERY VOLTAGE

Monitor the A/C COMPRESSOR STATUS signal while pushing the A/C switch.

The A/C COMPRESSOR STATUS should come ON when the A/C switch is pressed, and turns OFF when the A/C switch is repushed.

Monitor the GEAR SHIFT LEVER POSITION signal and move the gear shift control lever through all the ranges.

Verify that the GEAR SHIFT LEVER POSITION value matches the gear range indicated on the instrument panel or console.
Gear selections should be immediate and not harsh.

Move gear shift control lever to neutral and monitor the THROTTLE POSITION signal while increasing and decreasing engine speed with the accelerator pedal.

THROTTLE POSITION should increase with engine speed.

ROAD TEST PROCEDURE

Perform the road test using a scan tool.
This test should be performed when traffic and road conditions permit.
Observe all traffic regulations.

The TCM calculates upshift points based primarily on two inputs : throttle angle and vehicle speed. When the TCM wants a shift to occur, an electrical signal is sent to the shift solenoids which in turn moves the valves to perform the upshift.

The shift speed charts reference throttle angle instead of "min throttle" or "wot" to make shift speed measurement more uniform and accurate. A scan tool should be used to monitor throttle angle. Some scan tools have been programmed to record shift point information. Check the intruction manual to see if this test is available.

Upshift procedure

With gear selector in drive(D)

Look at the shift speed chart contained in this section and choose a percent throttle angle of 10 or 25%.
Set up the scan tool to monitor throttle angle and vehicle speed.
Accelerate to the chosen throttle angle and hold the throttle steady.
As the transaxle upshifts, note the shift speed and commanded gear changes for :

Second gear.
Third gear.
Fourth gear.

Important : Shift speeds may vary due to slight hydraulic delays responding to electronic controls. A change from the original equipment tire size affects shift speeds.

Note when TCC applies. This should occur in fourth gear. If the apply is not noticed by an rpm drop, refer to the "Lock-up Clutch Diagnosis" information contained in this section.

The Lock up clutch should not apply unless the trans-axle has reached a minimum operating temperature of 8°C (46°F) TRANS TEMP AND engine coolant temp of 50°C (122°F).

5. Repeat steps 1-4 using several different throttle angles.

Part Throttle Detent Downshift

At vehicle steeds of 55 to 65km/h(34 to 40mph)in Fourth gear, quickly increase throttle angle to greater than 50%. Verify that :

TCC apply.
Transaxle downshift to 3rd gear.
Solenoid 1 turns ON to OFF.
Solenoid 2 turns OFF.

Full Throttle Detent Downshift

At vehicle speeds of 55 to 65km/h (34 to 40mph)in Fourth gear, quickly increase throttle angle to its maximum position (100%) Verify that :

TCC release.
Transaxle downshift to Second gear immediately.
Solenoid 1 turns ON to OFF
Solenoid 2 turns OFF

Manual Downshifts

At vehicle speeds of 60km/h (40mph)in Fourth gear, release accelerator pedal while moving gear selector to Manual Third (3). Observe that :

Transaxle downshift to Third gear immediately.
Engine slows vehicle down

Move gear selector back to overdrive(D) and accelerate to 31mph (50km/h). Release the accelerator pedal and move the gear selector to Manual First(1) and observe that :

Transaxle downshift to Second gear immediately.
Engine slows vehicle down

Notice : A Manual First—Third Gear Ratio will occur at high speeds as an upshift safety feature. Do not attempt to perform this shift.

Coasting Downshifts

With the gear selector in Overdrive(D), accelerate to Fourth gear with TCC applied.
Release the accelerator pedal and lightly apply the brakes, and observe that :

TCC apply.
Down shifts occur at speeds shown ON the shift speed chart.

Manual Gear Range Selection

Upshifts in the manual gear ranges are controlled by the shift solenoids. Perform the following tests by accelerating at 25 percent TP sensor increments.

Manual Third (3)

With vehicle stopped, move the gear selector to Manual third(3) and accelerate to observe :

– 1-2 shift.

– 2-3 shift.

Manual Second (2)

With vehicle stopped, move the gear selector to Manual second(2) and accelerate to observe :

– 1-2 shift.

Accelerate to 40km/h(25mph) and observe :

– 2-3 shift does not occur

– TCC does not apply

Manual First (1)

With vehicle stopped, move gear selector to Manual First(1). Accelerate to 30km/h(19mph) and observe :

– No upshifts occur

Reverse (R)

With vehicle stopped, move gear selector to R(Re-verse) and observe :

– Solenoid 1 is OFF

– Solenoid 2 is OFF

Use a scan tool to see if any transaxle trouble codes have been set. Refer to "Diagnostic Trouble Codes" in this section and repair the vehicle as directed. After repairing the vehicle, perform the hoist test and verify that the code has not set again.

If the transaxle is not performing well and no trouble codes have been set, there may be an intermittent condition. Check all elcetrical connections for damage or a loose fit. You also have to perform a snapshot test which can help catch an intermittent condition that dose not occur long enough to set a code.

You may want to read "Electronic Component Diagnosis" in this section to become familiar with transaxle conditions caused by transaxle electrical malfunction.

If no trouble codes have been set and the condition is suspected to be hydraulic, take the vehicle on a road test.

TORQUE CONVERTER LOCK-UP CLUTCH(TCC) DIAGNOSIS

To properly diagnosis the lock-up clutch(TCC) system, perform all electrical testing first and then the hydraulic testing.

The TCC is applied by fluid pressure which is controlled by a solenoid Located inside the valve body. The solenoid is energized by completing an electrical circuit through a combination of switches and sensors.

Functional Check Procedure

Inspect

Install a tachometer or scan tool.
Operate the vehicle unit proper operating temperature is reached.
Drive the vehicle at 80 to 88km/h (50 to 55 mph) with light throttle(road load).
Maintaining throttle position, lightly touch the brake pedal and check for release of the TCC and a slight increase in engine speed(rpm).
Release the brake slowly accelerate and check for a reapply of the Lock up clutch and a slight decrease in engine speed(rpm).

Torque Converter Evaluation

Torque Converter Stator

The torque converter stator roller clutch can have one of two different type malfunctions :

A. Stator assembly freewheels in both directions.
B. Stator assembly remains Locked up at all times.

Condition A - Poor Acceleration Low Speed

The car tends to have poor acceleration from a stand still. At speeds above 50 to 55km/h(30 to 35mph), the car may act normal. If poor acceleration is noted, it should first be determined that the exhaust system is not blocked, and the transaxle is in 1st(First) gear when starting out.

If the engine freely accelerates to high rpm in N(Neu-tral), it can be assumed that the engine and exhaust system are normal. Checking for poor performance in "Drive" and "Reverse" will help determine if the stator is freewheeling at all times.

Condition B - Poor Acceleration High Speed

Engine rpm and car speed limited or restricted at high speeds. Performance when accelerating from a standstill is normal. Engine may overheat. Visual examination of the converter may reveal a blue color from overheating.

If the converter has been removed, the stator roller clutch can be checked by inserting two fingers into the splined inner race of the roller clutch and trying to turn freely clockwise, but not turn or be very difficult to turn counter clockwise.

Noise

Torque converter whine is usually noticed when the vehicle is stopped and the transaxle is in "Drive" or "Reverse". The noise will increase when engine rpm is increased. The noise will stop when the vehicle is moving or when the torque converter clutch is applied because both halves of the converter are turning at the same speed.

Perform a stall test to make sure the noise is actually coming from the converter :

Place foot on brake.
Put gear selector in "Drive".
Depress accelerator to approximately 1200rpm for no more than six seconds.

Notice : If the accelerator is depressed for more than six seconds, damage to the transaxle may occur.

A torque converter noise will increase under this load.

Important : This noise should not be confused with pump whine noise which is usually noticeable in P (Park), N (Neutral) and all other gear ranges. Pump whine will vary with pressure ranges.

The torque converter should be replaced under any of the following conditions:

External leaks in the hub weld area.
Converter hub is scored or damaged.
Converter pilot is broken, damaged or fits poorly into crankshaft.
Steel particles are found after flushing the cooler and cooler lines.
Pump is damaged or steel particles are found in th converter.
Vehicle has TCC shudder and/or no TCC apply. Replace only after all hydraulic and electrical diagnoses have been made.(Lock up clutch material may be glazed.)
Converter has an imbalance which cannot be corrected. (Refer To Converter Vibration Test Procedure.)
Converter is contaminated with engine coolant containing antifreeze.
Internal failure of stator roller clutch.
Excess end play.
Heavy clutch debris due to overheating (blue converter).
Steel particles or clutch lining material found in fluid filter or on magnet when no internal parts in unit are worn or damaged(indicates that lining material came from converter).

The torque converter should not be replace if :

The oil has an odor, is discolored, and there is no evidence of metal or clutch facing particles.
The threads in one or more of the converter bolt holes are damaged.

– correct with thread insert.

Transaxle failure did not display evidence of damage or worn internal parts, steel particles or clutch plate lining material in unit and inside the fluid filter.
Vehicle has been exposed to high mileage(only). The exception may be where the Lock up clutch damper plate lining has seen excess wear by vehicles operated in heavy and/or constant traffic, such as taxi, delivery or police use.

Lock Up Clutch Shudder Diagnosis

The key to diagnosing lock-up clutch(TCC) shudder is to note when it happens and under what conditions.

TCC shudder should only occur during the APPLY and/ or RELEASE of the Lock up clutch.

While TCC Is Applying Or Releaing

If the shudder occurs while TCC is applying, the problem can be within the transaxle or torque converter.

Something is not allowing the clutch to become fully engaged, not allowing clutch to release, or is trying to release and apply the clutch at the same time. This could be caused by leaking turbine shaft seals, a restricted release orifice, a distorted clutch or housing surface due to long converter bolts, or defective friction material on the TCC plate.

Shudder Occurs After TCC Has Applied :

In this case, most of the time there is nothing wrong with the transaxle! As mentioned above, once the TCC has been applied, it is very unlikely that will slip. Engine problems may go unnoticed under light throttle and load, but become noticeable after TCC apply when going up a hill or accelerating, due to the mechanical coupling between engine and transaxle.

Important : Once TCC is applied there is no torque converter assistance. Engine or driveline vibrations could be unnoticeable before TCC engagement.

Inspect the following components to avoid misdiagnosis of TCC shudder and possibly disassembling a transaxle and/or replacing a torque converter unnecessarily :

Spark plugs - Inspect for cracks, high resistance or broken insulator.
Plug wires - Lock in each end, if there is red dust (ozone) or black substance (carbon) present, then the wires are bad. Also look for a white discoloration of the wire indicating arcing during hard acceleration.
Distributor cap and rotor - look for broken or un-crimped parts.
Coil - look for black on bottom indication arcing while engine is misfiring.
Fuel injector - filter may be plugged.
Vacuum leak - engine won't get correct amount of fuel. May run rich or lean depending on where the leak is.
EGR valve - valvemay let it too much unburnable exhaust gas and cause engine to run lean.
MAP sensor - like vacuum leak, engine won't get correct amount of fuel for proper engine operation.
Carbon on intake valves - restricts proper flow or air/ fuel mixture into cylinders.
Flat cam - valves don't open enough to let proper fuel/air mixture into cylinders.
Oxygen sensor - may command engine too rich or too lean for too long.
Fuel pressure - may be too low.
Engine mounts - vibration of mounts can be multiplied by TCC engagement.
Axle joints - checks for vibration.
TPS - TCC apply and release depends on the TPS in many engines. If TPS is out of specification, TCC may remain applied during initial engine starting.
Cylinder balance - bad piston rings or poorly sealing valves can cause low power in a cylinder.
Fuel contamination - causes poor engine performance.

TCM INITIALIZATION PROCEDURE

When one or more operations such as shown below are performed, all learned contents which are stored in TCM memory should be erased after the operations.

When A/T H/W is replaced in a vehicle,
When a used TCU is installed in other vehicle,
When a vehicle condition is unstable (engine RPM flare, TPS toggling and so on; at this kind of unstable conditions, mis-adaptation might be done).

Connect the Scan 100 with a DLC connector in a vehicle.
Turn ignition switch ON.
Turn the power on for the Scan 100.
Follow the "TCM LEARNED INITIALIZE" procedure on the Scan 100 menu.

Notice : Before pushing "Yes" Button for TCM initialization on the Scan 100 screen, make sure that the condition is as follows:

Condition :

Engine idle.
Select lever set "P" range.

SHIFT SPEED CHART

Up Shift Speed

MODEL	First-Second gear (±4.8km/h)				Second-Third gear (±6.4km/h)				Third-Fourth gear (±8km/h)
MODEL	10% TPS	25% TPS	50% TPS	100% TPS	10% TPS	25% TPS	50% TPS	100% TPS	10% TPS	25% TPS	50% TPS	100% TPS
2.0 DOHC EOBD	20	20	27	57	37	38	49	108	50	53	74	168

Down Shift Speed

MODEL	Down Shift (±6.4km/h)			Lock Up Clutch Applied (Fourth)		Lock Up Clutch Released (Fourth)
MODEL	Fourth-Third (Coast)	Third-Second (Coast)	Second-First (Coast)	10%	25%	10%	25%
2.0 DOHC EOBD	43	22	12	70	70	65	65

INTERNAL WIRING HARNESS CHECK

Step	Action	Value(s)	Yes	No
1	Disconnected the transaxle harness. Measure the resistance between terminals 3 and 4 the transaxle wiring connector. Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 3	Go to Step 2
2	Disconnected the internal transaxle harness from the first solenoid valve Measure the resistance of the first solenoid valve Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 20	Go to Step 22
3	Measure the resistance between terminals 3 and 12 the second solenoid valve Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 5	Go to Step 4
4	Disconnected the internal transaxle harness from the second solenoid valve. Measure the resistance of the second solenoid valve. Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 20	Go to Step 22
5	Measure the resistance between terminals 5 and 6 the transaxle wiring connector(EDS 3) Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 7	Go to Step 6
6	Disconnected the internal transaxle harness from the pressure control valve 3(EDS 3). Measure the resistance of the EDS 3. Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 20	Go to Step 22
7	Measure the resistance between terminals 5 and 7 the transaxle wiring connector(EDS 4). Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 9	Go to Step 8
8	Disconnected the internal transaxle harness from the pressure control valve 4(EDS 4). Measure the resistance of the EDS 4. Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 20	Go to Step 22
9	Measure the resistance between terminals 5 and 10 the transaxle wiring connector(EDS 5). Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 11	Go to Step 10
10	Disconnected the internal transaxle harness from the pressure control valve 5(EDS 5). Measure the resistance of the EDS 5. Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 20	Go to Step 22
11	Measure the resistance between terminals 5 and 11 the transaxle wiring connector(EDS 6). Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 13	Go to Step 12
12	Disconnected the internal transaxle harness from the pressure control valve 6(EDS 6). Measure the resistance of the EDS 6. Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 20	Go to Step 22
13	Measure the resistance between terminals 4 and 9 the transaxle wiring connector(transaxle temperature sensor). Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 15	Go to Step 14
14	Disconnected the internal transaxle harness from the transaxle temperature sensor. Measure the resistance of the transaxle temperature sensor. Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 20	Go to Step 22
15	Measure the resistance between terminals 15 and 16 the transaxle wiring connector(transaxle input speed sensor). Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 17	Go to Step 16
16	Disconnected the internal transaxle harness from the transaxle input speed sensor. Measure the resistance of the input speed sensor. Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 20	Go to Step 22
17	Measure the resistance between terminals 1 and 2 the transaxle wiring connector(transaxle output speed sensor). Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 19	Go to Step 18
18	Disconnected the internal transaxle harness from the transaxle output speed sensor. Measure the resistance of the transaxle output speed sensor. Is the resistance within the values shown?	Refer to Component Resistance Chart	Go to Step 20	Go to Step 22
19	Measure the resistance between terminals of internal wiring harness.	Refer to Component Resistance Chart	No problem found, exit table	Go to Step 21
20	Inspect for resistance: Ispect the transaxle wiring for poor eletrical connections at the transaxle. Look for possible bent, backed out, deformed of damaged terminals. Check for weak terminal tension.	-	Verify repair and Go to Step 12	No problem found, exit table
21	Replace the internal wiring harness. Is the replacement complete.	-	No problem found, exit table	-
22	Replace the component. Is the replacement complete.	-	No problem found, exit table	-

TRANSAXLE WIRING HARNESS CONNECTOR

Wiring harness connector

1	Transaxle output speed sensor (+)
2	Transaxle output speed sensor (-)
3	Solenoid valve (+)
4	Transaxle temperature sensor (-)
5	Pressure control valve solenoid vlave (+)
6	Pressure control valve solenoid vlave (EDS3)
7	Pressure control valve solenoid vlave (EDS4)
8	Not used
9	Transaxle temperature sensor (+)
10	Pressure control valve solenoid vlave (EDS5)
11	Pressure control valve solenoid vlave (EDS6)
12	Solenoid valve 1
13	Solenoid valve 2
14	Not used
15	Transaxle output speed sensor (-)
16	Transaxle output speed sensor (-)

Component Resistance Chart

Component	Pass Through Pins	Resistance 20°C (68°F) Ohms	Resistance ≥ 140°C (212°F) Ohms
Solenoid 1	3, 12	26.5±0.5Ω	26-345Ω (not relative to emperature)
Solenoid 2	3, 13	26.5±0.5Ω	26-345Ω (not relative to emperature)
Pressure control solenoid valve (EDS3)	5, 6	5.7±0.45Ω	5.3-6.3Ω (not relative to emperature)
Pressure control solenoid valve (EDS4)	5, 7	5.7±0.45Ω	5.3-6.3Ω (not relative to emperature)
Pressure control solenoid valve (EDS5)	5, 10	5.7±0.45Ω	5.3-6.3Ω (not relative to emperature)
Pressure control solenoid valve (EDS6)	5, 11	5.7±0.45Ω	5.3-6.3Ω (not relative to emperature)
Transaxle temperature sensor*	4, 9	980-1,000Ω
Transaxle input speed sensor	15, 16	830±5Ω	788-871Ω (not relative to emperature)
Transaxle output speed sensor*	1, 2	∞	∞

* The resistance of the transaxle is necessarily dependent on the temperature.

SYMPTOM DIAGNOSIS

Oil leakage

Notice :

– Careful LUCalization of leakage points may make it possible to prevent incorrect or cost-intensive repairs.

Test steps :

– Thoroughly clean the transaxle, engine, and surrounding area(using a steam jet, for example).

– To LUCate leakage, use a suitable identifying spray or similar product.

– Depending on the amount of leakage, take the car for a short or a longer test drive - It may prove sufficient to place the car on a hoist and run the engine at idle speed to trace the leak.

– If possible, determine exactly which type of oil is escaping.

Symptom	Possible Cause	Action
Transaxle oil leakage	Oil pump(torque converter sealing)	Visually check torque converter sealing. Replace the converter sealing as described in the transaxle repair on the vehicle service.
	Crankshaft sealing ring	Check whether engine oil or TFT is leaking out. If leak is engine oil, replace the sealing ring as described in the engine repair instruction.
	Torque converter	Visual check. Fit an exchange converter as described in the repair instruction.
	Torque converter	Visual check. Fit an exchange converter as described in the repair instruction.
	Oil content too high	Check oil level(TFT and axle oil)as described in this chapter. Correct oil level, and recheck after a test drive. Notice : comply with the measuring procedure (filling procedure) in the repair instruction. Check the oil level at the overflow plug adjust to proper level if necessary.
	O-ring at bolt head damaged or missing	Check O-ring. Replace O-ring as described in the repair instruction.
	Shaft seal	Visually check the shaft seal. Replace the sealing ring as described in the repair instruction.
	Hose clamp loose	Check to ensure that the hose clamp fits tightly. If necessary, retighten clamp.
	Oil pan gasket not installed properly	Check to see if the gasket was positioned properly. Install gasket properly as described in the repair instruction.
	Oil pan gasket damaged	Check the gasket visually. Replace gasket as described in the repair instruction.
	Bolt at bracket loose	Check the Tightening Torque Retighten bolt
	Sealing ring at oil dipstick	Check O-ring. If necessary, replace O-ring.
	Sealing ring near end-cover connection defective	Check sealin rings. Put in new sealing ring Check O-ring as described in the repair instruction.
	Sealing ring selector shaft	Check sealing ring. Replace saeling ring as described in the repair instruction.
Transaxle oil leakage	O-ring at socket outlet	Check O-ring. Replace O-ring as described in the repair instruction.
	O-ring and speed sensor connection	Check O-ring. Replace O-ring as described in the repair instruction.
	Oil leak incorrectly identified	No oil leak is possible at this point.
	Speed sensor itself is leaking	Check speed sensor. Replace speed sensor as described in the repair instruction.
	Hair line crack at the piping in the connection area, sealing ring fit in transaxle housing	Pressurize the line with compressed air and check it. Replace lines as described in the repair instruction.
	O-ring defective, incorrect	Check O-ring. Replace O-rings as described in the repair instruction.
	Plug loos	Check the Tightening Torque for the screw plug. Tighten to torque specified in the repair instruction.

Noise

Symptom	Possible Cause	Action
Noise	TFT level too low	When the TFT level is too low, the gear wheels from the transaxle oil pump might generate noise. Check the TFT level as described in the repair instruction and fill to the proper level.
	Monolith in catalytic converter has broken	Check according to the exhaust gas diagnostic procedure or by shaking the catalytic converter casing. Replace catalytic converter if necessary.
	Noise from auxiliaries (e.g. exhaust system, alternator, drive shafts.)	Check these components; if necessary, eliminate the faults as described in the repair instruction
	Noise from tires or wheel bearings	Eliminate fault if necessary
	Noise from planetary gears	Whistling noise on traction and overrun(in first gear only)caused by high rotating speeds(functionally unavoidable)
	Cumulative tooth backlash in the complete drive line	Production status. Customer must be convinced.
	Jerky noise of the parking Lock (e.g. when the car is standing on a gradient)	Load-reversal reaction Apply the handbrake before selection the parking Lock(position P)
Noise	The engine's torsional vibrations are being transmitted to the drive shafts	At low speeds in fourth gear, vibration car arise(driving at too low an engine speed) Noise is functionally unavoidable; due to tolerances. Convince the customer.
Noise	Torque reaction strut loose	Check mounting and repair if necessary.

Shift quality

Notice :

– The assessment of shaft quality is, to a large extent, an individual, subjective matter. Take careful note of how the customer describes the complaint and of the manner in which he or she handles the vehicle and the controls.

– A sudden deterioration of shift quality may also be caused by the transaxle selecting an emergency or substitute program

Test steps :

– Carry out the general checks described in the automatic transaxle diagnostic information.

– Perform a test drive to answer the following questions.

In which driving situations does the shift quality complaint arise?

To which shifts does the complaint apply?

Is the complaint reproducible within a short period, or has it only occurred sporadically or on a single occasion?

– Check the oil level and oil quality

– Interrogate the fault memory and read out measurement block data.

Symptom	Possible Cause	Action
Shift quality	Rapid pressure build-up in the clutch	Operating error (position selected several times in quick succession).
	Jerk when parking Lock is released	Refer to "noise" in this Section.
	Incorrect electronic transaxle control module	Check the data status for transaxle control module; refer to "TCM" in this Section.
	Emergency/substitute program has been activated	For checking and remedial action, refer to "emergency/substitute program" in this Section.
	Accelerator pedal in indefinite position between full throttle and kick down	Persuade customer to choose clearly betweenkick down and full throttle Check setting according go engine repair instruction ; adjust if necessary.
	Control overlap between to clutches during shift	Production status Convince the customer
	Temperature sensor(not fault memory)	Check function according to "emergency/substitute program" in this Section.
	Kick down setting incorrect	Check A) Fllor mat is obstructing accelerator pedal B) The kick down setting as described in the Engine Section.

Malfunction

Notice : The faults dealt with here concern transaxle functions such as "traction"(forwards and reverse) and all type of shifts. Entries will not always be made in the fault memory.

Test steps :

Perform the general checks according to the automatic transaxle diagnostic procedure.

– Test drive

– Check oil level and quality

– Interrogate fault memory

Symptom	Possible Cause	Action
Malfunction	Defective clutch in transaxle it there is still no drive with the TCM disconnected	This is usually due to too little oil being added or to internal ldakage Repair is not possible ; if necessary, exchange transaxle.
	Kick down switch not functioning properly	For checking and remedial action, refer to "Emergency/Substitute Program" in this ction.
	Kick down switch not operating properly	For checking and remedial action, refer to Engine instruction.
	Vehicle is in emergency mode	For checking and remedial action, refer to "Emergency/Substitute Program" in this Section.

DIAGNOSTIC TROUBLE CODE DIAGNOSIS

DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC	Description	Indication	Default Action
P0562	System Voltage Low	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut off to the EDS valve.
P0563	System Voltage High	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut off to the EDS valve.
P0601	Internal Control Module Memory Checksum Error	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON : 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut off to the EDS valve.
P0603	Internal Control Module Keep Alive Memory(KAM)Error	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut off to the EDS valve.
P0604	Internal Control Module Random Access Memory(RAM)Error	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON : 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut off to the EDS valve.
P1604	Data Check Of Internal & Extended	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON : 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut off to the EDS valve.
P0606	Trans Control Module Processor Fault	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut off to the EDS valve.
P1606	Failure Of External Watchdog	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1671	CAN Transmit Message Failure	Power lamp flashing	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition OFF/ON : 3rd gear by hydraulic control. Possible P, R and N also possible.
P1672	CAN Bus OFF Failure	Power lamp flashing	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition OFF/ON : 3rd gear by hydraulic control. Possible P, R and N also possible.
P1673	CAN Receive ECM Message	Power lamp flashing	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition OFF/ON : 3rd gear by hydraulic control. Possible P, R and N also possible.
P0703	Brake Switch Circuit Malfunction	No Change	TCM assume that the brake light always active. Open lock up clutch.
P0705	Park/Neutral Position Switch	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON : 3rd gear by hydraulic control, position P, R and N also possible.
P0710	Transaxle Fluid Temperature sensor circuit malfunction	Power lamp flashing	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. TCM assume the transaxle fluid temperature is 60°C. No influence at vehicle running.
P0715	Input Speed Sensor Circuit Malfunction	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON : 3rd gear by hydraulic control, position P, R and N also possible. Open lock up clutch.
P0716	Input Speed Sensor Circuit Range/Performance	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON : 3rd gear by hydraulic control, position P, R and N also possible. Open lock up clutch.
P0717	Input Speed Sensor Circuit No Signal	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON : 3rd gear by hydraulic control, position P, R and N also possible. Open lock up clutch.
P0720	Output Speed Sensor Circuit Malfunction	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear. Open lock up clutch.
P0721	Output Speed Sensor Circuit Range/Performance	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear. Open lock up clutch.
P0722	Output Speed Sensor Circuit No Signal	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Vehicle running remains actual gear. Open lock up clutch.
P0725	Engine Speed Input Circuit (CAN) Malfunction	No Change	Adopt Emergency/Sybstitute mode and constant 4th gear. Open lock up clutch.
P0726	Engine Speed Input Circuit(CAN) Range/Performance	MIL ON	The Malfunction Indicator Lamp(MIL) will illuminate. The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear. Open lock up clutch.
P0727	Engine Speed Input Circuit(CAN) No Signal	MIL ON	The Malfunction Indicator Lamp(MIL) will illuminate. The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear. Open lock up clutch.
P0731	Gear 1 Incorrect Ratio	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear. High line pressure
P0732	Gear 2 Incorrect Ratio	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 3rd gear. High line pressure.
P0733	Gear 1 Incorrect Ratio	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear. High line pressure
P0734	Gear 1 Incorrect Ratio	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition OFF/ON : 3rd gear by hydraulic control. Possible P, R and N also possible. High line pressure.
P0781	1-2 Shift Malfunction	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 1st gear. Open lock up clutch.
P0782	2-3 Shift Malfunction	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 2nd gear. Open lock up clutch.
P0783	3-4 Shift Malfunction	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 3rd gear. Open lock up clutch.
P1839	EDS3 Output Shortage To Ground	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1840	EDS3 output shortage to battery	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1841	EDS3 output open	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1850	Solenoid 1 Output Shortage To Ground	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition OFF/ON : 3rd gear by hydraulic control. Possible P, R and N also possible.
P1851	Solenoid 1 Output Shortage To Battery	Power Lamp Flashing	Power lamp will blink. The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer.
P1852	Solenoid 1 Output Open	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition OFF/ON : 3rd gear by hydraulic control. Possible P, R and N also possible.
P1853	Solenoid 2 Output Shortage To Ground	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition OFF/ON : 3rd gear by hydraulic control. Possible P, R and N also possible.
P1854	Solenoid 2 Output Shortage To Battery	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition OFF/ON : 3rd gear by hydraulic control. Possible P, R and N also possible.
P1855	Solenoid 2 Output Open	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition OFF/ON : 3rd gear by hydraulic control. Possible P, R and N also possible.
P1861	EDS4 Output Shortage To Ground	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1862	EDS4 output shortage to battery	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1863	EDS4 output open	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1864	EDS5 Output Shortage To Ground	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1865	EDS5 Output Shortage To Battery	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1866	EDS5 Output Open	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1867	EDS6 Output Shortage To Ground	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1868	EDS6 Output Shortage To Battery	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1869	EDS6 Output Open	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1871	EDS Valve Power Supply Circuit Shortage To Battery	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control. After ignition LOCK/ON: 3rd gear by hydraulic control. Possible P, R and N also possible. Power supply cut OFF to the EDS valve.
P1874	Solenoid Valve Power Supply Circuit Shortage To Battery	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear by hydraulic control. After ignition OFF/ON : 3rd gear by hydraulic control. Possible P, R and N also possible.
P1881	2-1 Shift Malfunction	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 3rd gear. Open lock up clutch.
P1883	3-2 Shift Malfunction	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 3rd gear. Open lock up clutch.
P1884	4-3 Shift Malfunction	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear. Open lock up clutch.
P1885	3-1 Shift Malfunction	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 3rd gear. Open lock up clutch.
P1886	4-2 Shift Malfunction	MIL ON	The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. Adopt Emergency/ Substitute mode and constant 4th gear. Open lock up clutch.