Application	N•m	Lb-Ft	Lb-In
Steering column nut	22	16	-
Steering column bolt	22	16	-

Caution : When learn the transponder key, does not take keys, at the same time.
Caution : After ignition on, K-line is cut off max 3 seconds.
Caution : If the transponder learnt, RKE is also learnt, automatically.
Caution : The master key's access code must not forget and leaked.
1. Connect the Scan 100 Scan Tool to the Data Link Connector(DLC).
2. Turn the Scan 100 Scan Tool ”ON” by pressing the "Power" Button, then wait for the MAIN MENU screen to be displayed.
3. From the MAIN MENU screen, select "Diagnostics" by pressing #1 on the Key Pad.
4. From the MODEL YEAR screen, select the appropriate model year of the specific vehicle by either scrolling down to the year and pressing "ENTER", or by pressing the respective item number on the Key Pad.
5. From the VEHICLE TYPE screen, select the specific vehicle model by either scrolling down to the model name and pressing "ENTER", or by pressing the respective item number on the Key Pad.
6. From the SYSTEM SELECTION MENU screen, select "Body" by pressing #2 on the Key Pad.
7. From the BODY SELECTION MENU screen, select "Coding" by pressing #3 on the Key Pad.
8. From the CODING SYSTEM screen, select "Coding Only" by pressing #1 on the Key Pad.
9. From the SECRET NUMBER OF CODINGS screen, enter for(4) zero's (0–0–0–0) in the for(4) boxes labeled "1–2–3–4".
10. From the CODING SYSTEM SELECT screen. Select "IMMOBILIZER" by pressing #1 on the keypad.
Notice : A slight delay may occur and "PLEASE WAIT" may be displayed before the next screen appears.
11. From the FUNCTION SELECTION screen, Select "KEY CODING" by pressing #1 on the keypad.
12. From the IMMOBILIZER KEY CODING screen, enter six(6) Access Code in the six(6) boxes labeled "00-00-00".
13. Continue programming immobilizer key coding when directed by the Scan 100 Scan Tool until all immobilizer key coding have been programmed.
Notice : The ECU of the immobilizer can keep a maximum of 4 key codes.
Notice : If the transponder learnt, RKE is also learnt, automatically.
14. Once all transponder have been programmed, press the "ESC" button on the keypad. The display will confirm the number of transponder.
15. Turn the Scan 100 Scan Tool "OFF" by pressing the "POWER" button, then disconnect it from the Data Link Connector.

If the first key detected at the Ignition On transition is locked and well programmed (authentication by encryption), the ISU memorizes the serial number of this key (used as identifier), and validates this key (increasing the number of learnt keys). Then and, up to 3 more keys can be learnt by successive lgnition On transitions whatever the key status (locked or virgin).
The Learning mode ends :
- By validation with a Diagnosis request key learning end. The keys are definitively saved, the flag keys learning successful is set, and the ISU switches to nominal mode operation (learnt mode) ; It is now ready to emit the VIN-code to EMS control unit at the next lgnition ON transition.
- By cancellation with Diagnosis request cancel key learning, or time-out expiring, or power supply cut-off. The ISU returns then in its previous configuration (virgin mode).

If the first key detected at the lgnition On transition is virgin (non locked), we have to consider the CALAVCOL parameter value :
This parameter allows the simultaneous replacing of the ISU and the set of keys.
- If CALAVCOL = 1, the ISU learns this key (by programming, authenticating and eventually locking it), but goes out of Learning mode, does not accept any additional key, and switches to nominal mode operation (learnt mode). The KTR secret key is not yet validated, and it can be changed by a new Diagnosis request key learning start, entering another Access code ( of Virgin Master Key).
This allows to verify that the Immobilizer system is well synchronized (with the EMS control unit) by a cranking test. The KTR is validated automatically after 10 Ignition On transitions, or with a validation by Diagnosis request. The KTR validation status is saved to can resist to a power supply cut-off. Other keys can be learnt by executing the New keys affectation procedure
- If CALAVCOL = 0, the key is refused, and the Learning procedure is cancelled as soon as the Ignition is switched OFF (return to the ISU previous configuration : virgin mode).
It is then necessary to start again the procedure.

This is the procedure used in After Market to replace the keys, or to learn additional keys.
If an ISU control unit in learnt mode receives the Diagnosis request key learning start which allows to get the Access code corresponding to the vehicle and registered at the Factory,
- If the key detected at the Ignition On transition is locked, the ISU tries to authenticate it.
If it is well programmed (authentication by encryption), the ISU memorizes the serial number of this key (used as identifier), and validates this key (increasing the number of learnt keys).
If not, the key is refused : the learning of this key is not successful.
The ISU waits for a new Ignition ON transition.
- If the key detected at the Ignition On transition is virgin (non locked), the ISU learns this key (by programming, authenticating and eventually locking it).
The Learning mode ends :
- By validation with a Diagnosis request key learning end. The keys are definitively saved, and the flag keys learning successful is set, and the ISU switches to nominal mod operation (learnt mode) ; It is now ready to emit the VIN-code to EMS control unit at the next Ignition ON transition.
- By cancellation with Diagnosis request cancel key learning, or time-out expiring, or power supply cut-off.

Some information contained in Diagnosis data frames are updated during the keys learning and allow the operator to follow the procedure and to diagnostic in case the procedure fails :
- Key's transponder is locked.
- Key type is Master.
- Key type is RF.
- ISU learning status (learnt mode / virgin mode).
- Number of learnt keys.
- First key learning successful (Factory only).
- Keys learning successful .
- Status of each RF key (learnt / synchronized).

---

1. Disconnect the negative battery cable.
2. Remove the knee bolster. Refer to Section 9G, Interior Trim.
3. Remove the instrument cluster trim panel. Refer to Section 9E, Instrumentation/Driver Information.



---





4. Remove the steering column upper and lower cover.
5. Remove the nuts and the bolts securing the steering column.
6. Disconnect the steering column electrical connector.
7. Lower the steering column.



---





8. Remove the screw and the head amp (IMMO demoduator).

---

1. Install the head amp (IMMO demodulator) with the screw.



---





2. Raise the steering column.
3. Connect the steering column electrical connector.
4. Install the nuts and the bolts securing the steering column.
Tighten
Tighten the steering column nuts to 22 N•m (16 lb-ft).
Tighten the steering column bolts to 22 N•m (16 lb-ft).


5. Install the steering column upper and lower cover.



---





6. Install the instrument cluster trim panel. Refer to Section 9E, Instrumentation/Driver Information.
7. Install the knee bolster. Refer to Section 9G, Interior Trim.
8. Connect the negative battery cable.

- Up to 4 ignition keys with transponder integrated in the key head.

- The antenna (toroidal coil) for energizing and communicate with the transponder with its integrated electronic modulator/demodulator driver.

- The ISU control unit (Intelligent Switching Unit), in which Immobilizer function is managed.

- The ECM control unit (Engine Control Management).

- The external status indicator (LED) for displaying the Immoblilzer status.

- The serial data link between ISU and EMS control unit.

- The data link and supply link between ISU control unit and antenna Plus the standard components, conforming to Diagnostic standard Keyword Protocol 2000 :

- The Diagnostic Tester.

- The serial data link (K line) between Tester and vehicle ECM (Electronic Control Module).

- A mechanical part (metallic key).

- A transponder component.

- Top and bottom shells.

- Transponder powering (charge) phase, during which the antenna generates an electromagnetic field using a frequency of 134.2 kHz ; this field induce energy into the transponder by way of this resonant circuit.

- Write phase : sued to transfer commands, addresses and data to the transponder ; the principle is a pulse width modulation of the previous electromagnetic field.

- Read phase : the antenna is used as receiver, which demodulates the transponder response signal which is modulated using Frequency Shift Keying.

- Communication with the key's transponder after Ignition ON transition (identification and authentication of the key, learning of the keys).

- Communication with the ECM control unit after Ignition ON transition (receipt of the ECM request and transmission of release message).

- Control of the Immobilizer status indicator (LED).

- Communication with the Diagnosis tester (keys learning, diagnostic).

- The Immobilizer active mode, selected when Ignition key is OFF. In this mode, the status indicator (LED) is driven in mode A or B (see Status indicator chapter), depending of the Alarm function status (armed of disarmed), (cranking is not possible).

- The Nominal mode, selected when Ignition key is switched ON and Nominal mode condition is verified. It is the current mode of use. In this mode, 2 function states are considered :

• Blocked state : in this state, the vehicle should be immobilized (cranking is not possible).
• Released state : in this state, the vehicle can be mobilized (cranking is possible).

- The Learning mode, selected when Ignition key is switched ON and Learning mode condition is verified.

• The ignition module is put in a bypass mode.
• The ECM will not create an electronic spark timing (EST) output, so no spark will be generated by the ignition coil.
• The ECM will not enable the fuel pump.
• The ECM will not enable the fuel injectors.