VCM Replacement/Programming

NOTE: In order to prevent possible electrostatic discharge (ESD) damage to the VCM, do not touch the connector pins or soldered components on the circuit board.

IMPORTANT:
^ Service of the VCM consists of either replacement of the VCM or reprogramming of the VCM.
^ If the VCM is being replaced the Knock Sensor (KS) module must be transferred to the replacement VCM.
^ The replacement VCM must be programmed before the vehicle will run.
^ The replacement VCM must have the Passlock Reprogramming procedure performed before the vehicle will run.
^ The replacement VCM must have the CKP System Variation Learn procedure performed or a DTC P1336 will set.

A shorted solenoid, relay coil, or harness will not damage the output driver module (ODM) in the VCM. A shorted solenoid, relay coil, or harness will cause the circuit and the controlled component to be inoperative.

When the circuit fault is not present or the technician has repaired the fault, the Output Driver Module (ODM) will again operate in a normal manner due to its fault protected design.

REMOVAL PROCEDURE

CAUTION: Refer to Battery Disconnect Caution in Service Precautions.




1. Disconnect the negative battery cable.
2. Disconnect the retainer clips and VCM electrical connectors.
3. Pull the wiring harness pin, which is underneath the wiring harness on top of the VCM bracket, out from the VCM bracket.




4. Pinch the metal ends belonging to the V-clip together.
5. Pull the V-clip out of the VCM bracket tongue.
6. Push the VCM bracket tongue until the VCM bracket is free from the battery tray bracket.




7. Guide the VCM bracket upwards and between the master cylinder reservoir and the A/C hose to remove the bracket out of the engine compartment.
8. Press all three detent clips to separate the VCM bracket into two halves.
9. Lift the VCM out of the VCM bracket.





IMPORTANT: The remaining steps are only necessary for a VCM replacement:

10. Remove the access cover screws.
11. Remove the VCM access cover.




12. Gently pinch the retaining clip.





IMPORTANT: Since the knock Sensor Module will be used in the replacement VCM, place the knock Sensor Module in an area where it will not be damaged.

13. Pull upward to remove the Knock Sensor Module.

INSTALLATION PROCEDURE





NOTE: Refer to Electrostatic Damage and the VCM Notice in Service Precautions.

IMPORTANT:
^ Ensure that the VCM being installed is the original VCM, or that the replacement VCM service number is identical to the original VCM service number.
^ Steps 1-4 are only necessary for a new VCM installation:

1. Align the notches of the Knock Sensor Module with the notches in the knock Sensor Module socket.

IMPORTANT: Press only on the ends of the Knock Sensor Module. Gently press on the Knock Sensor Module until it is firmly seated in the socket. Listen for the click.

2. Install the Knock Sensor Module in the Knock Sensor Module socket.




3. Install the access cover on the VCM.

NOTE: Refer to Fastener Notice in Service Precautions.

4. Install the access cover screws.

Tighten
Tighten the access cover screws to 4.8 N.m (42 lb in).




5. Align the VCM with one of the VCM bracket halves.
6. Snap the two VCM bracket halves together.
7. Grasp the VCM bracket such that the RED VCM connector receptacle is located on the bottom and on the driver side of the vehicle.
8. Guide the VCM bracket between the master cylinder reservoir and the A/C hose into the slot near the driver side wheel well.




9. Insert the VCM bracket tongue into the retaining brace slot.
10. Insert the V-clip into the VCM bracket tongue.




11. Insert the wiring harness pin into the VCM bracket hole.
12. Connect the VCM electrical connectors and retainer clips.
13. Connect the negative battery cable.
14. Program the VCM. Testing and Inspection