Hombre S Regular Cab 4WD V6-4.3L (1999)
Engine Control Module: Service and Repair
VCM Replacement/Programming
General Instruction
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 Pass lock Reprogramming procedure performed before the vehicle will run.
-
The replacement VCM must have the CAP 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 and Installation
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
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.
