Lighting System Footwell Light Circuit

Body Electrical. Lexus Is250, Is220D. Gse20 Ale20
Lighting. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST BY INTELLIGENT TESTER

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU RH - BATTERY)

LIGHTING SYSTEM - Footwell Light Circuit


DESCRIPTION

The main body ECU RH receives information regarding the door lock position switches, door courtesy switches, and engine switch, and turns on each footwell light.
This illumination setting can be canceled using the light control rheostat.

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System.Lighting System Footwell Light Circuit


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the intelligent tester main switch on.

  1. Select the item(s) below in the ACTIVE TEST, and check the operation.

    ACTIVE TEST: Body (Main body ECU RH)
    Item
    		Test Details
    		Diagnostic Note
    Step Light Operation
    		Footwell lights ON / OFF
    		-
    OK:
    Footwell lights come on.
    HINT:
    The footwell lights RH and LH share the same power source. If either of the lights does not come on, there may be a problem in the part of the circuit that relates to that light. Therefore, inspect that part of the circuit.


NG
Go to step 2
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU RH - BATTERY)


    Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System.Lighting System Footwell Light Circuit

  1. Disconnect the J75 main body ECU RH connector.

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    J75-15 (FSPT) - Body ground
    		Always
    		10 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU RH (COWL SIDE J/B RH)