Diagnostics For Failed On-Board Diagnostics

A: AT OIL TEMP INDICATOR LIGHT











Diagnosis
The AT OIL TEMP indicator light circuit is open or shorted.

Trouble Symptom:
- When ignition switch is turned to ON (engine OFF), AT OIL TEMP indicator light does not illuminate.
- When on-board diagnostics is performed, AT OIL TEMP indicator light remains illuminated.





Wiring Diagram


B: CONTROL MODULE POWER SUPPLY AND GROUND LINE














Diagnosis





Wiring Diagram