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Home >> Toyota >> 2010 >> Matrix S, FWD, Automatic >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes (B1000/31 - B1905/74) & Circuit Tests >> Airbag System >> Circuit Test >> TC and CG Terminal Circuit >> Procedure

TC and CG Terminal Circuit: Procedure

  1. CHECK WIRE HARNESS (TC OF DLC3 - TC OF ECM) 
    1. Turn the ignition switch off.
      Fig 1: Checking Wire Harness (TC Of DLC3 - TC Of ECM) Connector Terminals
      GTY244470Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the connector from the ECM.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E15-13 (TC) - A37-27 (TC) Always Below 1 Ω

    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.
      Fig 2: Identifying DLC3 Connector Terminals
      GTY236104Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      E15-4 (CG) - Body ground Always Below 1 Ω

    NG → REPAIR OR REPLACE WIRE HARNESS 

    OK: Go to next step 

  3. CHECK WIRE HARNESS (TC OF DCL3 - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 3: Identifying DLC3 Connector Terminals
      GTY228531Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      E15-13 (TC) - Body ground Always 1 MΩ or higher

    NG → REPAIR OR REPLACE WIRE HARNESS OR EACH ECU 

    OK → See step   4 

  4. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL 
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