Diagnostic Procedure: Headlight Alarm Signal

Step 1 - 4:

N : DIAGNOSTICS PROCEDURE FOR HEADLIGHT ALARM SIGNAL

1. CHECK HEADLIGHT ALARM OUTPUT SIGNAL FOR SECURITY CONTROL MODULE




1. Remove security control module without disconnecting connector.
2. Measure voltage between security control module connector and body.

Connector & terminal / Specified voltage:
(B93) No.12 - Body / 10 V, or more

3. Set security system in armed state.
4. Open the door without ignition key to operate the security system (alarm state).
5. Measure voltage between security control module and body during alarm state.

Connector & terminal / Specified voltage:
(B93) No.12 - Body / repeats 1 V, max. (0.2 sec.) and 10 V, or more (0.6 sec.) intervals

2. CHECK POWER SUPPLY FOR HEADLIGHT ALARM RELAY.




1. Remove headlight alarm relay without disconnecting connector.
2. Measure voltage between headlight alarm relay connector and body.

Connector & terminal / Specified voltage:
(B58) No.1 - Body / 10 V, or more

3. CHECK CONTINUITY OF HEADLIGHT ALARM RELAY.




1. Remove headlight alarm relay.
2. Check continuity between terminals No.1 and No.2 of headlight alarm relay.

4. CHECK HARNESS CONNECTOR BETWEEN HEADLIGHT ALARM RELAY AND SECURITY CONTROL MODULE.




1. Disconnect connectors of headlight alarm relay and security control module.
2. Measure resistance of harness connector between headlight alarm relay and security control module.

Connector & terminal / Specified resistance:
(B58) No.2 - (B93) No.12 / 10 Ohm, max.

5. CHECK HEADLIGHT ALARM RELAY.
Refer to headlight alarm relay for inspection.