Diagnostic Tests: Notes

NOTE: All connector references in the following tests apply to harness connectors unless otherwise specified. For wire color, circuit description and connector terminal identification, see CONNECTOR IDENTIFICATION and/or WIRING DIAGRAMS . ALWAYS perform TRANSMISSION VERIFICATION TEST VER-1A after each repair.

NOTE: If customer's complaint relates to back-up lights, see appropriate symptom under SYMPTOM TESTS .

For engine-related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. These DTCs pertain to engine performance and must be repaired first, as engine performance and related component signals will affect transaxle operation and diagnosis. ALWAYS perform POWERTRAIN VERIFICATION TEST VER-5 after performing engine-related DTC repairs.

For non-electrical testing and mechanical overhaul procedures, see CHRYSLER 42LE OVERHAUL article. For electronic component testing and diagnostic procedures, use scan tool to retrieve DTCs and diagnose system. See RETRIEVING DIAGNOSTIC TROUBLE CODES under DIAGNOSIS & TESTING.

NOTE: Always perform the following procedures prior to diagnosing DTCs.

Check transmission fluid level and condition at normal operating temperature. Check transaxle for damage or leaks. Repair as necessary. Using scan tool, check for engine-related DTCs. Repair all engine-related DTCs prior to diagnosing transaxle malfunction. Using scan tool, check for transaxle DTCs. Repair all transaxle and one trip failure codes as necessary. Diagnose one trip failure codes as hard codes. Inspect wiring and connectors and repair as necessary. Using scan tool, perform SHIFT LEVER POSITION test. If test does not pass, see DTC P0705: CHECK SHIFTER SIGNAL . For speed ratio DTCs, record all Clutch Volume Index (CVI) information. CVI represents the volume of fluid needed to compress a clutch pack. TCM determines CVI's by monitoring time it takes for a gear change to occur. Most codes set at engine start up, but some codes must be set by driving vehicle.