Diesel Data: Automotive Repair

PCM Not Identified or Incorrect

PCM NOT IDENTIFIED OR INCORRECT

When Monitored and Set Condition
^ When Monitored: Continuous.
^ Set Condition: If the Controller Antilock Brake (CAB) detects an invalid Powertrain Control Module (PCM), the DTC is set.





For a complete Electronic Stability Program (ESP) Circuit Diagram refer to Diagrams; Electrical.

Diagnostic Test
1. WITH THE DRB III, READ DTCs
Turn the ignition on.





With the DRB III, erase DTCs.
Turn the ignition off.
Turn the ignition on.
Start the engine.

CAUTION: Ensure braking capability is available before road testing.

Drive the vehicle above 10 MPH for at least 20 seconds.
Stop the vehicle.
With the DRB III, read DTCs.
Does the DRB III display a PCM Not Identified or Incorrect DTC?
Yes >> Replace the Controller Antilock Brake. Perform ABS VERIFICATION TEST. ABS Verification Test
No >> The condition that caused this DTC to set is currently not present. Perform ABS VERIFICATION TEST.