Symptom Diagnostic Procedures

O/D Main Switch & O/D OFF Indictor Light Circuit

CIRCUIT DESCRIPTION

The O/D main switch is a momentary type switch. When pressing the O/D main switch, the O/D OFF indicator light illuminates and the ECM prohibits shifting into O/D. When pressing it once again, the O/D OFF indicator light turns off and the ECM allows shifting into O/D. Turning the ignition switch OFF will reset the O/D OFF indicator light.

Wiring Diagram:

Step 1 - 3:

Step 4 - 5:

INSPECTION PROCEDURE