Power Source Circuit

LIGHTING: LIGHTING SYSTEM: Power Source Circuit

Power Source Circuit

DESCRIPTION

This circuit detects the state of the power switch and sends it to the main body ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE
HINT: Check if the power source control ECU operation is normal before performing the following procedure.

PROCEDURE

1. READ VALUE USING TECHSTREAM (POWER SWITCH)
(a) Check the DATA LIST for proper functioning of the power switch.

Main body ECU





OK -- PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.

2. CHECK DRIVER SIDE JUNCTION BLOCK (MAIN BODY ECU)




(a) Measure the voltage of the connectors.
Standard voltage:






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

3. CHECK DRIVER SIDE JUNCTION BLOCK (MAIN BODY ECU)




(a) Measure the voltage of the connector.
Standard voltage:






OK -- PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.

4. CHECK DRIVER SIDE JUNCTION BLOCK (MAIN BODY ECU)




(a) Measure the voltage of the connector.
Standard voltage:






NG -- REPLACE DRIVER SIDE JUNCTION BLOCK (MAIN BODY ECU)
OK -- REPAIR OR REPLACE HARNESS AND CONNECTOR