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Home >> Toyota >> 2017 >> Avalon XLE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Codes & Symptom Tests - (Except Hybrid) >> Airbag System >> Circuit Test >> TC and CG Terminal Circuit [10/2014 - ] >> Procedure

TC and CG Terminal Circuit [10/2014 - ]: Procedure

  1. CHECK WIRE HARNESS (TC OF DLC3 - TC OF ECM) 
    1. Turn the engine switch off.
      GTY562740Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3
      *a Front view of wire harness connector
      (to ECM)
    2. Disconnect the A18 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D28-13 (TC) - A18-45 (TC) Always Below 1 Ω

    Result: 

    NG 

    REPAIR OR REPLACE WIRE HARNESS 

    Result: 

    OK 

    See step  2

  2. CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY597760Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3

      Standard Resistance

      Tester Connection Condition Specified Condition
      D28-4 (CG) - Body ground Always Below 1 Ω

    Result: 

    NG 

    REPAIR OR REPLACE WIRE HARNESS 

    Result: 

    OK 

    See step  3

  3. CHECK WIRE HARNESS (TC OF DLC3 - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY598969Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3

      Standard Resistance

      Tester Connection Condition Specified Condition
      D28-13 (TC) - Body ground Always 1 MΩ or higher

    Result: 

    OK 

    REPLACE AIRBAG ECU ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    NG 

    REPAIR OR REPLACE WIRE HARNESS OR REPLACE ECM