General Information

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 (0DM) 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 (0DM) 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. Remove the VCM bracket bolts.
3. Lift the inside edge of the VCM bracket until the bottom of the bracket can clear the A/C accumulator.
4. Slide the VCM bracket over the A/C accumulator.
5. Continue sliding the VCM bracket until the fender side of the bracket is no longer underneath the fender lip.




6. Remove the retainer clips and VCM connectors.




7. Remove the VCM from the VCM bracket.




8. The remaining steps are only necessary for a VCM replacement:
Remove the access cover screws.
9. Remove the VCM access cover.

IMPORTANT: Since the Knock Sensor (KS) module will be used in the replacement VCM, place the module in an area where it will not be damaged.




10. Gently pinch the retaining clip and pull upward to remove the KS module.

Installation Procedure

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 replacement VCM installation:

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




1. Align the notches of the KS module with the notches in the socket.

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

2. Install the KS module in the KS 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 5.0 N.m (44 lb in).

IMPORTANT: Make sure that the snap retainer is up in the normal position and retaining the module.




5. Insert the VCM into the VCM bracket until it is fully seated.




6. Connect the VCM connectors and retainer clips.




7. Insert the VCM bracket at an angle so that the fender side of the bracket is positioned underneath the fender lip.
8. Push the VCM bracket underneath the lip until the inside edge of the bracket clears the A/C accumulator.

NOTE: Refer to Fastener Notice in Service Precautions.

9. Install the VCM bracket bolts.

Tighten
Tighten the bolts to 10 N.m (89 lb in).

10. Connect the negative battery cable.
11. When installing a replacement VCM, perform the VCM Programming procedure. Testing and Inspection