Lighting System Ignition Switch Circuit

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER

INSPECT ACC RELAY

INSPECT NO. 1 IGNITION RELAY

CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - BATTERY AND GROUND)

CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - IGNITION SWITCH)

INSPECT IGNITION SWITCH

LIGHTING SYSTEM - Ignition Switch Circuit


DESCRIPTION

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

WIRING DIAGRAM


Camry. Acv40 Gsv40.Lighting.Lighting System.Lighting System Ignition Switch Circuit


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to the ON position and turn the intelligent tester main switch on.

  1. Select the items below in the DATA LIST, and read the display on the intelligent tester.

    Main Body (Main Body ECU):
    Item
    		Measurement Item / Display (Range)
    		Normal Condition
    		Diagnostic Note
    ACC SW
    		Ignition switch ACC signal / ON or OFF
    		ON: Ignition switch ON or ACC
    OFF: Ignition switch off
    		-
    IG SW
    		Ignition switch IG signal / ON or OFF
    		ON: Ignition switch ON or ACC
    OFF: Ignition switch off
    		-
    OK:
    Normal conditions listed above are displayed.


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


2.INSPECT ACC RELAY


    Camry. Acv40 Gsv40.Lighting.Lighting System.Lighting System Ignition Switch Circuit

  1. Remove the ACC relay from the instrument panel J/B assembly.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    3 - 5
    		10 kΩ or higher
    Below 1 Ω (When battery voltage is applied to terminals 1 and 2)


NG
REPLACE ACC RELAY
OK


3.INSPECT NO. 1 IGNITION RELAY


    Camry. Acv40 Gsv40.Lighting.Lighting System.Lighting System Ignition Switch Circuit

  1. Remove the No. 1 ignition relay from the instrument panel J/B assembly.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    3 - 5
    		10 kΩ or higher
    Below 1 Ω (When battery voltage is applied to terminals 1 and 2)


NG
REPLACE NO. 1 IGNITION RELAY
OK


4.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - BATTERY AND GROUND)


    Camry. Acv40 Gsv40.Lighting.Lighting System.Lighting System Ignition Switch Circuit

  1. Disconnect the IA instrument panel J/B assembly connector.

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    IA-1 - Body ground
    		Always
    		10 to 14 V


    Camry. Acv40 Gsv40.Lighting.Lighting System.Lighting System Ignition Switch Circuit

  1. Disconnect the IF instrument panel J/B assembly connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    IF-10 - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - IGNITION SWITCH)


    Camry. Acv40 Gsv40.Lighting.Lighting System.Lighting System Ignition Switch Circuit

  1. Disconnect the E23 ignition switch connector.

  1. Disconnect the II instrument panel J/B assembly connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    II-3 - E23-2 (ACC)
    		Always
    		Below 1 Ω
    II-4 - E23-4 (AM1)
    		Always
    		Below 1 Ω
    II-9 - E23-1 (IG1)
    		Always
    		Below 1 Ω
    II-3 - Body ground
    		Always
    		10 kΩ or higher
    II-4 - Body ground
    		Always
    		10 kΩ or higher
    II-9 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.INSPECT IGNITION SWITCH

  1. Inspect the ignition switch (CAMRY_ACV40 RM0000026VF003X.html)

    OK:
    Ignition switch is normal.


NG
REPLACE IGNITION SWITCH
OK

REPLACE INSTRUMENT PANEL J/B ASSEMBLY