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Home >> Lexus >> 2013 >> RX 350 Base, FWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System (Diagnostic Codes (B1815/54 - B1928/78) & Symptom Tests) >> Airbag System >> Symptom Tests >> 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 engine switch off.
      GTY351220Courtesy 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
      F17-13 (TC) - A43-16 (TC) Always Below 1 Ω
      TEXT IN ILLUSTRATION

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

    NG → 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.
      GTY348592Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      F17-4 (CG) - Body ground Always Below 1 Ω
      TEXT IN ILLUSTRATION

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

    NG → 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.
      GTY348566Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      F17-13 (TC) - Body ground Always 1 MΩ or higher
      TEXT IN ILLUSTRATION

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

    NG → REPLACE WIRE HARNESS OR EACH ECU 

    OK → See step   4 

  4. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL [03/2012 - 07/2012] 
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