SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2020RAV4 XLE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 54 (CAN COMMUNICATION SYSTEM (HV) - CIRCUIT TESTS (2 OF 6))CAN COMMUNICATION SYSTEM (FOR HV MODEL)DRIVER SEAT CONTROL ECU COMMUNICATION STOP MODE [02/2019 - ]PROCEDURE
2020 Toyota RAV4 XLE, AWD

Driver Seat Control ECU Communication Stop Mode [02/2019 - ]: Procedure

2020 Toyota RAV4 XLE, AWDSECTION Procedure
WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR OPEN IN CAN BUS WIRE (POSITION CONTROL ECU ASSEMBLY BRANCH WIRE) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the position control ECU assembly connector.
      GTY934252Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Position Control ECU Assembly)
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T8-13 (CANP) - T8-14 (CANN) 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. Disconnect the position control ECU assembly connector.
      GTY934110Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Position Control ECU Assembly)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T7-2 (GND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
    3. 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 [02/2019 - 10/2019] , or refer to INITIALIZATION [10/2019 - 06/2020] , or refer to INITIALIZATION [06/2020 - 08/2020] , or refer to INITIALIZATION [08/2020 - 12/2021] , or refer to INITIALIZATION [12/2021 - 10/2022] , or refer to INITIALIZATION [10/2022 - 10/2023] , or refer to INITIALIZATION [10/2023 - ]

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

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      T7-3 (+B) - Body ground Ignition switch off 11 to 14 V
      T8-1 (IG) - Body ground Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      T8-15 (SYSB) - Body ground Ignition switch off 11 to 14 V

      Result

      Proceed to 
      OK
      NG

    Result: 

    OK 

    REPLACE POSITION CONTROL ECU ASSEMBLY 

    Refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.