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Pre-collision System Switch Circuit [11/2015 - ]: Procedure

  1. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the G94 pre-collision system cancel switch (combination switch assembly) connector.
    2. w/o Sliding Roof:

      Disconnect the Q7 pre-collision city sensor connector.

    3. w/ Sliding Roof:

      Disconnect the Q8 pre-collision city sensor connector.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      G94-1 (ECU) - Q7-9 (PCSW) *1
      G94-1 (ECU) - Q8-9 (PCSW) *2
      Always Below 1 Ω
      G94-3 (GND) - Body ground Always Below 1 Ω
      G94-1 (ECU) - Body ground Always 10 kΩ or higher
      • *1: w/o Sliding Roof
      • *2: w/ Sliding Roof
    5. w/o Sliding Roof:

      Connect the Q7 pre-collision city sensor connector.

    6. w/ Sliding Roof:

      Connect the Q8 pre-collision city sensor connector.

    7. Connect the G94 pre-collision system cancel switch (combination switch assembly) connector.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  2

  2. INSPECT PRE-COLLISION SYSTEM CANCEL SWITCH (COMBINATION SWITCH ASSEMBLY) 
    1. Remove the pre-collision system cancel switch (combination switch assembly) (Refer to REMOVAL [11/2015 - ] ).
    2. Inspect the pre-collision system cancel switch (combination switch assembly) (Refer to INSPECTION [11/2015 - ] ).

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    Refer to PROBLEM SYMPTOMS TABLE [11/2015 - 06/2017] Refer to PROBLEM SYMPTOMS TABLE [06/2017 - ] )

    Result: 

    NG 

    REPLACE PRE-COLLISION SYSTEM CANCEL SWITCH (COMBINATION SWITCH ASSEMBLY) 

    Refer to COMPONENTS [11/2015 - ] )