Ignition Switch: Testing and Inspection

Ignition Switch Circuit (Theft Deterrent)

CIRCUIT DESCRIPTION
When the ignition switch is turned to the ACC position, battery positive voltage is applied to the terminal ACC of the ECU Also, if the ignition switch is turned to the ON position, battery positive voltage is applied to the terminals ACC and IG of the ECU. When the battery positive voltage is applied to the terminal ACC of the ECU while the theft deterrent system is activated, the warning stops. Furthermore, power supplied from the terminals ACC and IG of the ECU is used as power for the door open detection switch, etc.

Wiring Diagram:

Step 1 - 2:

INSPECTION PROCEDURE



Ignition Switch Circuit (Automatic Transmission Vehicle)

CIRCUIT DESCRIPTION
This circuit sends an ignition switch ON or OFF signal to the ECU.

Wiring Diagram:

Step 1:

Step 3:

INSPECTION PROCEDURE