2007 Grand Cherokee WK Factory Service Manual 9 - ENGINE

P1602-PCM NOT PROGRAMMED

For a complete wiring diagram Refer to Section 8W.



Possible Causes
 
PCM
 


Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).



Diagnostic Test

1. PCM PROGRAMMED

Ignition on, engine not running.
With a scan tool, erase DTCs.
With a scan tool program the PCM.
Start the engine.
Allow the engine to reach normal operating temperature.
With a scan tool, select View DTCs.

Does the DTC reset?

Yes


No