Diagnostics

DIAGNOSTICS

Diagnosing an electronically controlled automatic transaxle is simplified by using the following procedures. One of the most important things to remember is that there is a definite procedure. Do not take short cuts 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 repair technician will be able to diagnose and repair the concern the first time.

On-Board Diagnostics With Scan Tool


NOTE: For detailed instructions and other diagnostic methods using the scan tool, see Electronic Engine Control (EEC) System.

NOTE: If using a generic scan tool, see Electronic Engine Control (EEC) System for instructions on carrying out On-Board Diagnostics procedures.
The self-tests can be used to diagnose the PCM, sensors, and actuators of this transaxle.The following is a guide for using the on-board diagnostic (OBD) Self-tests and the scan tool.

- Self-Test KOEO - Key On/Engine Off
- Self-Test KOER - Key On/Engine Running
- Self-Test CMDTCs - Continuous Memory DTCs
- Clearing DTCs
- OBD II Drive Cycle
- Other Scan Tool Features

For information on other diagnostic testing features using the scan tool, see Electronic Engine Control (EEC) System. Other diagnostic methods include the following:

- PID access mode, used to monitor sensors and actuators.
- Freeze frame data access mode, used to view emission-related data values from specific PIDs.
- Oxygen sensor monitor mode, used to monitor the oxygen sensor.