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Home >> Toyota >> 2019 >> RAV4 XLE, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 40 (Can Communication System (HV) - Circuit Tests (1 Of 6) & Diagnostic Codes) >> CAN COMMUNICATION SYSTEM (for HV Model) >> Skid Control ECU Communication Stop Mode [11/2018 - 02/2019] >> Procedure

Skid Control ECU Communication Stop Mode [11/2018 - 02/2019]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR OPEN IN CAN BUS WIRE (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY [SKID CONTROL ECU] BRANCH WIRE) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the brake booster with master cylinder assembly (skid control ECU) connector.
      GTY932117Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Brake Booster with Master Cylinder Assembly [Skid Control ECU])
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A42-37 (CA1H) - A42-38 (CA1L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω
      A42-35 (CA2H) - A42-34 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω

      Result

      Proceed to 
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A42-28 (GND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      A42-27 (GND2) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      A42-26 (GND3) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      A42-25 (GND4) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      A42-24 (GND5) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      A42-23 (GND6) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      GTY865145Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Brake Booster with Master Cylinder Assembly [Skid Control ECU])
    2. Reconnect the cable to the negative (-) auxiliary battery terminal.
      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

      Refer to INITIALIZATION [11/2018 - 02/2019]

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      A42-16 (IG1) - Body ground Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      A42-12 (IG2) - Body ground Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      A42-14 (B1) - Body ground Power switch off 11 to 14 V
      A42-15 (BS) - Body ground Power switch off 11 to 14 V

      Result

      Proceed to 
      OK
      NG

    Result: 

    OK 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SKID CONTROL ECU) 

    Refer to REMOVAL [11/2018 - 02/2019]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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