Diagnostic Procedure

WARNING: This page is about a different car, the 1995 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

When performing vehicle diagnosis:

Ensure transmission fluid level is correct and fluid is neither contaminated nor aerated.
Ensure shift cable is properly adjusted. See TRANSMISSION SERVICING - A/T article in the TRANSMISSION SERVICING.
Ensure battery is fully charged.
Perform visual inspection, ensuring all electrical connections at transmission, TCM, TP sensor, transmission shaft speed sensor are clean and properly installed.
Retrieve DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES .
Repair DTCs in order displayed.
Always perform TEST 3A - VERIFICATION TEST after repair is completed. See TEST 3A - VERIFICATION TEST under DIAGNOSTIC TROUBLE CODE TESTS.

NOTE: Self-diagnostic tests are written specifically for Chrysler's Diagnostic Readout Box (DRB) scan tool. A generic scan tool may be used, but may not be capable of performing all necessary test functions.