DTC P0602

DTC P0602

PCM programming error

DETECTION CONDITION

No configuration data in the PCM.
NOTE:
- If the "PCM CONFIGURATION" is successful, the PCM stores DTC P0602 and illuminates the MIL (system is normal). Clear DTC P0602 using the M-MDS after the "PCM CONFIGURATION".
- The MIL goes out after three drive cycles with no failure (The DTCs remain in PCM).

Diagnostic support note

This is a continuous monitor (CCM).
The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
FREEZE FRAME DATA (Mode 2/Mode 12) is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

Configuration has not been completed
PCM malfunction

DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA (MODE 12) HAS BEEN RECORDED Has the FREEZE FRAME DATA (Mode 12) been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA (Mode 12) on the repair order, then go to the next step.
2	VERIFY RELATED SERVICE BULLETINS AVAILABILITY Verify related Service Bulletins availability. Is any related Service Bulletins available?	Yes	Perform the repair or diagnosis according to the available Service Bulletins. If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	VERIFY PCM CONFIGURATION HAS BEEN PERFORMED Perform the "PCM CONFIGURATION". (See PCM CONFIGURATION ). Turn the ignition switch to the ON position (Engine off). Clear the DTC from the PCM memory using the M-MDS. Start the engine and warm it up completely. Perform the KOEO or KOER self test (using M-MDS) or Drive Mode 03 (PCM Adaptive Memory Production, EGR System, A/F Sensor Heater, HO2S Heater, A/F Sensor, HO2S, and TWC Repair Verification Drive Mode) (not using M-MDS). (See KOEO/KOER SELF TEST ). (See OBD-II DRIVE MODE ). Is the same DTC present?	Yes	Perform the "PCM CONFIGURATION" again, then go to the next step. (See PCM CONFIGURATION ).
3		No	Go to the Step 5.
4	VERIFY TROUBLESHOOTING OF DTC P0602 COMPLETED Turn the ignition switch to the ON position (Engine off). Clear the DTC from the PCM memory using the M-MDS. Start the engine. Perform the Drive Mode 03 (PCM Adaptive Memory Production, EGR System, A/F Sensor Heater, HO2S Heater, A/F Sensor, HO2S, and TWC Repair Verification Drive Mode). (See OBD-II DRIVE MODE ). Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION ).
4		No	Go to the next step.
5	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE ). Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE ).
5		No	DTC troubleshooting completed.