Indicator Circuit

LIGHTING (EXT): LIGHTING SYSTEM: Indicator Circuit
- Indicator Circuit

DESCRIPTION

The headlight beam level control system indicator light in the combination meter sub-assembly comes on for approximately 3 seconds when the power switch is turned on (IG). The indicator light also comes on when the headlight leveling ECU assembly detects a malfunction.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - COMBINATION METER SUB-ASSEMBLY)

(a) Disconnect the L27 combination meter sub-assembly connector.

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

Standard Voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (COMBINATION METER SUB-ASSEMBLY - HEADLIGHT LEVELING ECU ASSEMBLY)

(a) Disconnect the A48 headlight leveling ECU assembly connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. INSPECT COMBINATION METER SUB-ASSEMBLY

(a) Reconnect the L27 combination meter sub-assembly connector.





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

Standard Voltage:





Text in Illustration





NG -- REPLACE METER CIRCUIT PLATE Removal

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Exterior Lighting System