Diagnostic Test

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

1) PROGRAMMING MILEAGE INTO THE PCM
Ignition on, engine not running.

With the scan tool, erase DTCs.

Using a scan tool, program the mileage into the PCM.

Start the engine.

Allow the engine to reach normal operating temperature.

With a scan tool, read DTCs.

Does the DTC reset?

Yes
1. Replace and program the Powertrain Control Module per Service Information.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. The mileage has been successfully programmed into the PCM. Test is complete.
2. Perform POWERTRAIN VERIFICATION TEST .