LIGHTING SYSTEM > Headlight Signal Circuit

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DESCRIPTION

The cowl side junction block ECU RH receives the HEAD position signal from the light control switch.
It also receives the signal from the combination switch via the multiplex communication system.

WIRING DIAGRAM


E109558E02


INSPECTION PROCEDURE

1.CHECK WIRE HARNESS (MULTIPLEX NETWORK BODY ECU - BODY GROUND)


    E108177E06

  1. Measure the voltage of the wire harness side connector.

    Standard voltage:
    Tester Connection
    		Specified Condition
    L67-23 (HEAD) - Body ground
    		10 to 14 V



OK
Go to step 2
NG

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

2.CHECK WIRE HARNESS (MULTIPLEX NETWORK BODY ECU - SWITCH - BODY GROUND)


    E108572E03

  1. Disconnect the L67 ECU connector.

  1. Disconnect the L22 switch connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    L67-23 (HEAD) - L22-4 (HEAD)
    		Below 1 Ω
    L67-23 (HEAD) or L22-4 (HEAD) - Body ground
    		10 kΩ or higher
    L22-5 (E) - Body ground
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE