OBD-II Self-Diagnosis
Service NoticeOBD-II SELF-DIAGNOSIS
A/T self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through the blinking pattern of the O/D OFF indicator or the malfunction indicator lamp (MIL) . Refer to "SELF-DIAGNOSTIC RESULT TEST MODE".
With Manufacturer's Scan Tool
The self-diagnostic results indicated by the MIL are automatically stored in both the ECM and TCM memories.
Always perform the procedure "HOW TO ERASE DTC" to complete the repair and avoid unnecessary blinking of the MIL.
Clearing Diagnostic Trouble Codes
The following self-diagnostic items can be detected using ECM self-diagnostic results mode* only when the O/D OFF indicator lamp does not indicate any malfunctions.
- park/neutral position (PNP) switch
- A/T 1st, 2nd, 3rd, or 4th gear function
- A/T TCC S/V function (lock-up).
* For details of OBD-II, refer to "ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION".
POWERTRAIN MANAGEMENT / COMPUTERS AND CONTROL SYSTEMS / SYSTEM DIAGNOSTICS Testing and Inspection
- Certain systems and components, especially those related to OBD, may use a new style slide-locking type harness connector.