Headlight Signal Circuit

AIR CONDITIONING: AIR CONDITIONING SYSTEM: Headlight Signal Circuit
- Headlight Signal Circuit

DESCRIPTION

The air conditioning amplifier receives headlight operational signals to determine electrical load conditions. The electrical load condition signals are used for controlling the number of the PTC heater elements to be heated.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT HEADLIGHT ASSEMBLY

(a) Check that the headlight comes on when the light control switch is turned to the HEAD position.

OK:

The headlight comes on.

NG -- GO TO LIGHTING SYSTEM Headlight Relay Circuit
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (H-LP RELAY - AIR CONDITIONING AMPLIFIER)

(a) Disconnect the G8 air conditioning amplifier connector.





(b) Measure the voltage according to the value(s) in the table below.

Standard voltage:





(c) Reconnect the air conditioning amplifier connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures