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AWD Control Switch Circuit [10/2022 - ]: Procedure

  1. READ VALUE USING GTS (OFF-ROAD MODE SELECTION SIGNAL AND OFF-ROAD GUIDANCE STATUS) 
    1. Simultaneously display the "Off-road Mode Selection Signal" four wheel drive Data List item and the "Off-road Guidance Status" engine Data List item.
    2. According to the display on the GTS, read the Data List.

      Chassis > Four Wheel Drive > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Off-road Mode Selection Signal Off-road mode selection signal Normal / Grass & Snow / Mud & Sand / Loose Rock / Mogul / Rock & Dirt / Rock / E-Lock - -

      Powertrain > Engine > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Off-road Guidance Status Off road mode status Normal / Grass & Snow / Mud & Sand / Loose Rock / Mogul or Rock & Dirt - -

      Chassis > Four Wheel Drive > Data List 

      Tester Display
      Off-road Mode Selection Signal

      Powertrain > Engine > Data List 

      Tester Display
      Off-road Guidance Status
    3. Operate the multi-terrain select switch (crawl control switch assembly) and check that the Data List display and multi-information display message change according to switch operation.

      OK

      Multi-terrain Select Switch (Crawl Control Switch Assembly) Operation Data List Display Multi-information Display Message
      NORMAL Normal -
      MUD&SAND Mud & Sand MUD&SAND
      ROCK&DIRT Rock & Dirt ROCK&DIRT

      Result

      Result Proceed to
      When the switch is operated, the Data List display (Off-road Mode Selection Signal and Off-road Guidance Status) and message do not change A
      When the switch is operated, the Data List display (Off-road Mode Selection Signal) changes, but the Data List display (Off-road Guidance Status) and message do not change B
      When the switch is operated, the Data List display (Off-road Mode Selection Signal and Off-road Guidance Status) changes, but the message does not change C
      When the switch is operated, the Data List display and message change normally D

    Result: 

    B 

    REPLACE ECM. Refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

    Result: 

    C 

    GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

    Result: 

    D 

    CHECK INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

    Result: 

    A 

    See step  2

  2. INSPECT MULTI-TERRAIN SELECT SWITCH (CRAWL CONTROL SWITCH ASSEMBLY) 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE MULTI-TERRAIN SELECT SWITCH (CRAWL CONTROL SWITCH ASSEMBLY). Refer to  REMOVAL [12/2019 - ] 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - MULTI-TERRAIN SELECT SWITCH (CRAWL CONTROL SWITCH ASSEMBLY)) 
    1. Disconnect the M42 4WD ECU assembly connector.
    2. Disconnect the P10 multi-terrain select switch (crawl control switch assembly) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      M42-18 (OMS) - P10-6 (B) Always Below 1 Ω
      M42-19 (OMSG) - P10-3 (E) Always Below 1 Ω
      M42-18 (OMS) or P10-6 (B) - Body ground Always 10 kΩ or higher
      M42-19 (OMSG) or P10-3 (E) - Body ground Always 10 kΩ or higher
      M42-18 (OMS) or P10-6 (B) - M42-19 (OMSG) or P10-3 (E) Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE 4WD ECU ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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