Airbag System Diagnosis Circuit

Restraints. Camry. Acv40 Gsv40
Supplemental Restraint System. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

CHECK WIRE HARNESS (DLC3 - ECM)

CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND)

CHECK WIRE HARNESS (TC OF ECM - BODY GROUND)

AIRBAG SYSTEM - Diagnosis Circuit


DESCRIPTION

DTC output mode is set by connecting terminals TC and CG of the DLC3.
DTCs are displayed by blinking of the SRS warning light.
HINT:
  1. When each warning light stays blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in each ECU is suspected.
  2. A DTC output mode signal is transmitted through CAN communication system to each ECU including the center airbag sensor assembly. Thus when all systems do not enter DTC output mode, there may be an ECM malfunction.

WIRING DIAGRAM


Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System.Airbag System Diagnosis Circuit


Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System.Airbag System Diagnosis Circuit


INSPECTION PROCEDURE

1.CHECK CAN COMMUNICATION SYSTEM

  1. Check if a CAN communication system DTC is output (CAMRY_ACV40 RM000000WIB05NX.htmlfor LHD, CAMRY_ACV40 RM000000WIB05SX.html for RHD).

    Result:

    Condition
    		Proceed to
    DTC is not output
    		A
    DTC is output
    		B


B
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
A


2.CHECK WIRE HARNESS (DLC3 - ECM)


    Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System.Airbag System Diagnosis Circuit

  1. Turn the ignition switch to the LOCK position.

  1. Disconnect the connector from the ECM.

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

    Standard resistance:
    for 2GR-FE (LHD):
    Tester Connection
    		Condition
    		Specified Condition
    E10-13 (TC) - A55-27 (TC)
    		Always
    		Below 1 Ω
    for 2GR-FE (RHD) and for 2AZ-FE:
    Tester Connection
    		Condition
    		Specified Condition
    E10-13 (TC) - A24-27 (TC)
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE WIRE HARNESS (TC OF DLC3 - TC OF ECM)
OK


3.CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND)


    Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System.Airbag System Diagnosis Circuit

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E10-4 (CG) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE WIRE HARNESS (CG OF DLC3 - BODY GROUND)
OK


4.CHECK WIRE HARNESS (TC OF ECM - BODY GROUND)


    Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System.Airbag System Diagnosis Circuit

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

    Standard resistance:
    for 2GR-FE (LHD):
    Tester Connection
    		Condition
    		Specified Condition
    A55-27 (TC) - Body ground
    		Always
    		1 MΩ or higher
    for 2GR-FE (RHD) and for 2AZ-FE:
    Tester Connection
    		Condition
    		Specified Condition
    A24-27 (TC) - Body ground
    		Always
    		1 MΩ or higher


NG
REPAIR OR REPLACE WIRE HARNESS OR EACH ECU
OK

REPLACE CENTER AIRBAG SENSOR ASSEMBLY (CAMRY_ACV40 RM000000UWV048X.html)