B2139: PCM ID Does Not Match Between PATS and PCM

DTC B2139: PCM ID SECURITY ID DOES NOT MATCH BETWEEN PATS AND PCM

B2139-1 Retrieve The DTCs
- Key OFF.
- Connect NGS to DLC.
- Retrieve and document continuous DTCs.
- Clear continuous DTCs.
- Key OFF and key ON and retrieve DTCs.
Is DTC B2139 retrieved?
Yes
Go to B2139-2.
No
System is OK.

B2139-2 Clear PCM ID From PATS Module And PCM
- Perform the security access procedure for PATS Module. Service and Repair

Note: Do NOT perform ignition key code erase.

- Select PARAMETER RESET command for PATS.
- Use diagnostic card for PCM Active Command Keep Alive Memory Reset.
- Turn the ignition switch to run for thirty seconds.
- Clear continuous DTCs.
- Retrieve continuous DTCs.
Is DTC B2139 retrieved?
Yes
- VERIFY PCM calibration is correct for vehicle.
- If correct, REPEAT Step 2.
- If fault code persists, REPLACE the Passive Anti-Theft System (PATS) Control Module.
- CYCLE the ignition to RUN using two encoded ignition keys.
- Go to the start of this Pinpoint Test B2139.
- CLEAR the DTC(s).
- TEST the system for normal operation.
- If OK, REPLACE the Passive Anti-Theft System (PATS) Control Module. Service and Repair
- CYCLE the ignition to RUN using two encoded ignition keys.
- Go to the start of this Pinpoint Test B2139.
- CLEAR the DTCs.
- TEST the system for normal operation.
- If DTC B2139 still exists, REPLACE the PCM.
- Go to the start of this Pinpoint Test B2139.
- CLEAR the DTCs.
- TEST the system for normal operation.
No
- System is OK.
- CHECK for any other DTCs; FOLLOW Diagnostic Trouble Code (DTC) Index. PATS Diagnostic Trouble Code (DTC) Index