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Home >> Toyota >> 2014 >> Avalon XLE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes & Symptom Tests) (Except Hybrid) >> Airbag System >> Symptom Tests >> TC and CG Terminal Circuit [10/2013 - ] >> Procedure

TC and CG Terminal Circuit [10/2013 - ]: Procedure

  1. CHECK WIRE HARNESS (TC OF DLC3 - TC OF ECM) 
    1. Turn the engine switch off.
      GTY372267Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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
      TEXT IN ILLUSTRATION

      *1 DLC3
      *a Front view of wire harness connector
      (to ECM)

    NG → REPAIR OR REPLACE WIRE HARNESS 

    OK: Go to next step 

  2. CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY362241Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

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

      *1 DLC3

    NG → REPAIR OR REPLACE WIRE HARNESS 

    OK: Go to next step 

  3. CHECK WIRE HARNESS (TC OF DLC3 - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY362240Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

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

      *1 DLC3

    NG → REPAIR OR REPLACE WIRE HARNESS OR REPLACE ECM 

    OK → See step   4 

  4. REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [10/2013 - ] 
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