Description

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 to follow. 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 service technician will be able to diagnose and repair the concern the first time.

On-Board Diagnostics with NGS

The Quick Tests are in the Powertrain Control/Emissions Diagnosis Manual. These tests can be used to diagnose the powertrain control module (PCM) (12A650), sensors and actuators of the AX4N transaxle.

The following is a guide for using the On-Board Diagnostic (OBD) Quick Tests and the Rotunda New Generation Star Tester (NGS) 007-00500 or equivalent, with some special considerations to remember:

Note: For detailed instructions and other diagnostic methods using the NGS, refer to the Powertrain Control/Emissions Diagnosis Manual or NGS instruction guide.

Note: If using a generic scan tool, refer to the Powertrain Control/Emissions Diagnosis Manual for instructions on performing OBD procedures.