Headlight Relay Circuit

CIRCUIT DESCRIPTION
Head light relay will be "ON" by operating the headlight switch. The transistor which activates the headlight relay has two sorts: one activates directly by the headlight switch for fail safe and the other activates by CPU. the one that activates by CPU has two systems and prevents the headlight from turning off at the time of one system trouble in the automatic operation circuit.

When the theft deterrent system is activated, it causes the transistor in the ECU to switch ON and OFF at approximately 0.25 sec. intervals. This switches the headlight control relay ON and OFF, thus flashing the headlights (See the wiring diagram).

In this condition, if any of the following operations is done, the transistor in the ECU goes OFF and the headlight control relay switches OFF, thus stopping the headlights flashing;
1. Unlock the front LH or RH door with a key.
2. Turn the ignition switch to ACC or ON position.
3. Unlock the doors with the wireless door lock control system.
4. Wait for approximately 60 seconds.

Wiring Diagram:

Steps 1 - 2:

INSPECTION PROCEDURE