OBD-II Self-Diagnosis

WARNING: This page is about a different variant/trim than selected.

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 A/T check (position) indicator or the malfunction indicator lamp (MIL). Refer to the table on FUNCTION for the indicator used to display each self-diagnostic result.
The self-diagnostic results indicated by the MIL are automatically stored in both the ECM and TCM memories.
Always perform " HOW TO ERASE DTC " to complete the repair and avoid unnecessary blinking of the MIL.
The following self-diagnostic items can be detected using ECM self-diagnostic results mode* only when the A/T check (position) indicator lamp does not indicate any malfunctions.
- park/neutral position (PNP) switch
- A/T 1 st, 2nd, 3rd, or 4th gear function
- A/T TCC S/V function (lock-up).
  *: For details of OBD-II, refer to "ON BOARD DIAGNOSTIC (OBD) SYSTEM " (with QR25DE), or "ON BOARD DIAGNOSTIC (OBD) SYSTEM " (with VQ35DE).
Certain systems and components, especially those related to OBD, may use a new style slide locking type harness connector.
For description and how to disconnect, refer to "HOW TO CHECK TERMINAL ".