Lighting System Engine Switch Illumination Circuit

Body Electrical. Camry. Acv40 Gsv40
Lighting. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING INTELLIGENT TESTER

INSPECT ENGINE SWITCH

CHECK HARNESS AND CONNECTOR

LIGHTING SYSTEM - Engine Switch Illumination Circuit


DESCRIPTION

The engine switch illumination is controlled by the main body ECU. The operation and condition of this control are described below.

Operation
Condition
Fade in
When any of the following conditions is met, the engine switch illumination will fade in.
  1. Any door is opened.
  2. Any door is unlocked when the engine switch is off and all doors are closed.
  3. Engine switch is turned from on (ACC) to off when all doors are closed.
Fade out immediately
When either of the following conditions is met, the engine switch illumination will fade out.
  1. Engine switch is turned from off to on (ACC or IG) when all doors are closed.
  2. All doors are locked when the engine switch is off.
Illuminate for approximately 15 seconds, and then fade out
All doors are closed when the engine switch is off.

WIRING DIAGRAM


Camry. Acv40 Gsv40.Lighting.Lighting System.Lighting System Engine Switch Illumination Circuit


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER

  1. Connect intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn intelligent tester on.

  1. Select the following menu items: Body Electrical / Main Body / Active Test.

  1. Check the operation.

    Main Body:
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Indicator for Lighting
    		Engine switch illumination
    		ON / OFF
    		-
    OK:
    The engine switch illumination comes on.


OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG


2.INSPECT ENGINE SWITCH


  1. Remove the engine switch.


    Camry. Acv40 Gsv40.Lighting.Lighting System.Lighting System Engine Switch Illumination Circuit

  1. Apply the battery voltage to the engine switch.

  1. Check that the illumination comes on.

    OK:
    Measurement Condition
    		Specified Condition
    Battery positive (+) → Terminal 11 (SWIL)
    Battery negative (-) → Terminal 5 (GND) or 4 (COM)
    		Engine switch illumination comes on


NG
REPLACE ENGINE SWITCH
OK


3.CHECK HARNESS AND CONNECTOR


    Camry. Acv40 Gsv40.Lighting.Lighting System.Lighting System Engine Switch Illumination Circuit

  1. Disconnect the E7 main body ECU connector.

  1. Disconnect the E52 engine switch connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E52-11 (SWIL) - E7-25 (SWIL)
    		Always
    		Below 1 Ω
    E52-4 (COM) or E52-5 (GND) - Body ground
    		Always
    		Below 1 Ω
    E7-25 (SWIL) - Body ground
    		Always
    		Below 10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY