Transmission System Verification Test
NOTE:
If Transmission Control Module (TCM) or torque converter has been replaced or transmission has been repaired or replaced, scan tool must be used to perform quick learn procedure.
- Turn ignition off. Remove all test equipment and jumper wires. Connect any disconnected components. Connect scan tool to Data Link Connector (DLC). Turn ignition on. Using scan tool, clear Diagnostic Trouble Codes (DTC) from all modules. Using scan tool, read TRANS TEMP. Start engine and let idle until transmission temperature is more than 110°F (43°C). Go to next step.
- Check transmission fluid level and adjust as necessary. Using scan tool, monitor engine RPM. Test drive vehicle from a stop to 45 MPH 15-20 times with throttle at 20-25 degrees, allowing transmission to upshift through all gears. Go to next step.
- Driving at less than 25 MPH, make 5-8 wide open throttle kicks down to 1st gear, allowing 5 seconds in 2nd and 3rd gears between each kick down. Using scan tool, have assistant retrieve DTCs from all modules during test drive. If no DTCs exist, system is operating correctly and customer complaint cannot be duplicated, repair is complete. If any DTCs exist, perform appropriate test. See DIAGNOSTIC TROUBLE CODE IDENTIFICATION table under SELF-DIAGNOSTIC SYSTEM.