Diagnostics

Diagnostics





Diagnosing an electronically controlled automatic transaxle is simplified using the following procedures. It is important to remember that there is a definite procedure to follow. Do not take shortcuts or assume that critical checks or adjustments have already been made. Follow the procedures as written to avoid missing critical components or steps. By following the diagnostic sequence, the technician will be able to diagnose and repair the concern the first time.


On-Board Diagnostic (OBD) with Scan Tool

NOTE: For detailed instruction and other diagnostic methods using the scan tool, refer to the tester and Computers and Control Systems Information.

These quick tests should be used to diagnose the Transmission Control Module (TCM) and should be carried out in order.

- Self Test -Key ON Engine OFF (KOEO)
- Self Test -Key ON Engine Running (KOER)
- Special Test Mode, based on the system selected
- Clearing DTCs
- On-Board Diagnostic (OBD) II Drive Cycle
- Other Scan Tool Features

For further information on other diagnostic testing features using the scan tool, refer to Computers and Control Systems Information.