Mazda DTC P0602 Diagnostic

DTC P0602

 

  

PCM programming error

 
DETECTION CONDITION

• No configuration data in the PCM

Note

• If “PCM CONFIGURATION” is successful, the PCM stored DTC P0602 and illuminates the MIL (System is normal). Clear the DTC P0602 using the WDS or equivalent after “PCM CONFIGURATION”.

• The MIL goes out after three drive cycles with no failure (DTCs remain in PCM).
POSSIBLE CAUSE

• Complete configuration has not been completed

• PCM malfunction

Diagnostic procedure

 
 

STEP

 

  

INSPECTION

 

  

ACTION

 

1
 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED

• Has FREEZE FRAME DATA been recorded?

Yes

Go to the next step.

No

Record the FREEZE FRAME DATA on the repair order, then go to the next step.

2
 VERIFY RELATED REPAIR INFORMATION AVAILABILITY

• Verify related service repair information availability.

• Is any related repair information available?

Yes

Perform repair or diagnosis according to the available repair information.

• If the vehicle is not repaired, go to the next step.

No

Go to the next step.

3
 VERIFY TROUBLESHOOTING OF DTC P0602 COMPLETED

• Make sure to reconnect all disconnected connectors.

• Turn the ignition switch to the ON position (Engine off).

• Clear the DTC from the PCM memory using the WDS or equivalent.

• Perform the HO2S heater, HO2S, and TWC Repair Verification Drive Mode. 

• Is the same DTC present?

Yes

Replace the PCM, then go to the next step.

No

Go to the next step.

4
 VERIFY AFTER REPAIR PROCEDURE

• Perform the “After Repair Procedure”.

• Are any DTC present?

Yes

Go to the applicable DTC troubleshooting.

No

Troubleshooting completed.
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