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Home >> Toyota >> 2020 >> RAV4 LE, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 136 (Hybrid Control System (Lithium-Ion Battery) - Circuit Tests (2 Of 2)) >> HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY) >> Rear Motor Resolver Circuit [06/2020 - ] >> Procedure

Rear Motor Resolver Circuit [06/2020 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - REAR MOTOR RESOLVER) 
    WARNING:

    Be sure to wear insulated gloves.

    1. Check that the service plug grip is not installed.
      NOTE:

      After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the service information because this may cause a malfunction.

    2. Disconnect the A87 inverter with converter assembly connector.

      Refer to PROCEDURE - Step 20 [06/2020 - 08/2020] , or refer to PROCEDURE - Step 20 [08/2020 - 12/2021] , or refer to PROCEDURE - Step 20 [12/2021 - 10/2022] , or refer to PROCEDURE - Step 20 [10/2022 - 10/2023] , or refer to PROCEDURE - Step 20 [10/2023 - ]

    3. Connect the cable to the negative (-) auxiliary battery terminal.
    4. Turn the ignition switch to ON.
    5. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      A87-28 (RRF) - Body ground Ignition switch ON Below 1 V
      A87-1 (RRFG) - Body ground Ignition switch ON Below 1 V
      A87-19 (RSN) - Body ground Ignition switch ON Below 1 V
      A87-10 (RSNG) - Body ground Ignition switch ON Below 1 V
      A87-29 (RCS) - Body ground Ignition switch ON Below 1 V
      A87-20 (RCSG) - Body ground Ignition switch ON Below 1 V
      GTY839538Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Inverter with Converter Assembly)
      NOTE:

      Turning the ignition switch to ON with the inverter with converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    6. Turn the ignition switch off.
    7. Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 2 minutes or more.
    8. Reconnect the A87 inverter with converter assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  2

  2. CHECK REAR MOTOR RESOLVER 
    WARNING:

    Be sure to wear insulated gloves.

    1. Check that the service plug grip is not installed.
      NOTE:

      After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the service information because this may cause a malfunction.

    2. Disconnect the A87 inverter with converter assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A87-28 (RRF) - A87-1 (RRFG) Ignition switch off 9.2 to 15.2 Ω
      A87-19 (RSN) - A87-10 (RSNG) Ignition switch off 16.6 to 28.4 Ω
      A87-29 (RCS) - A87-20 (RCSG) Ignition switch off 18.5 to 30.4 Ω

      HINT: 

      To correct the variation of the measured resistance due to temperature, use the following formula to calculate the resistance at 20°C (68°F).

      R20 = Rt / {1 + 0.00393 X (T - 20)}

      The calculation is based on the following:

      R20: Resistance at 20°C (68°F) (mΩ)

      Rt: Measured resistance (mΩ)

      T: Temperature when the resistance is measured (°C (°F).)

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      A87-28 (RRF) or A87-1 (RRFG) - Body ground and other terminals Ignition switch off 1 MΩ or higher
      A87-19 (RSN) or A87-10 (RSNG) - Body ground and other terminals Ignition switch off 1 MΩ or higher
      A87-29 (RCS) or A87-20 (RCSG) - Body ground and other terminals Ignition switch off 1 MΩ or higher
      A87-11 (DRN7) - Other terminals Ignition switch off 1 MΩ or higher
      GTY973833Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Inverter with Converter Assembly)
    4. Reconnect the A87 inverter with converter assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REAR MOTOR RESOLVER CIRCUIT NORMAL (PERFORM NEXT STEP FOR REFERENCED DTC) 

    Result: 

    NG 

    See step  3

  3. CHECK CONNECTOR CONNECTION CONDITION (REAR MOTOR RESOLVER CONNECTOR) 
    1. Remove the rear suspension member sub-assembly.

      Refer to REMOVAL [06/2020 - 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 - ]

    2. Check the connection condition of the rear motor resolver connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.

      Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [11/2018 - ]

      GTY846102Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

      - The connector is connected securely.

      - The terminals are not deformed and are connected securely.

      - No water or foreign matter in the connector.

      Result

      Result Proceed to
      OK A
      NG (The connector is not connected securely.) B
      NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

    Result: 

    B 

    CONNECT SECURELY 

    Result: 

    C 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    A 

    See step  4

  4. INSPECT REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (REAR MOTOR RESOLVER) 
    WARNING:

    Be sure to wear insulated gloves.

    1. Check that the service plug grip is not installed.
      NOTE:

      After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the service information because this may cause a malfunction.

    2. Disconnect the O1 resolver connector.
      GTY920911Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      4 (RRF) - 6 (RRFG) Ignition switch off 8.8 to 14.8 Ω
      3 (RSN) - 7 (RSNG) Ignition switch off 16.2 to 28.0 Ω
      2 (RCS) - 8 (RCSG) Ignition switch off 18.1 to 30.0 Ω

      HINT: 

      To correct the variation of the measured resistance due to temperature, use the following formula to calculate the resistance at 20°C (68°F).

      R20 = Rt / {1 + 0.00393 X (T - 20)}

      The calculation is based on the following:

      R20: Resistance at 20°C (68°F) (mΩ)

      Rt: Measured resistance (mΩ)

      T: Temperature when the resistance is measured (°C (°F).)

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      4 (RRF) - Body ground and other terminals (except 6 (RRFG)) Ignition switch off 1 MΩ or higher
      6 (RRFG) - Body ground and other terminals (except 4 (RRF)) Ignition switch off 1 MΩ or higher
      3 (RSN) - Body ground and other terminals (except 7 (RSNG)) Ignition switch off 1 MΩ or higher
      7 (RSNG) - Body ground and other terminals (except 3 (RSN)) Ignition switch off 1 MΩ or higher
      2 (RCS) - Body ground and other terminals (except 8 (RCSG)) Ignition switch off 1 MΩ or higher
      8 (RCSG) - Body ground and other terminals (except 2 (RCS)) Ignition switch off 1 MΩ or higher
      GTY889491Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Rear Motor Resolver (Rear Traction Motor with Transaxle Assembly))
    4. Reconnect the O1 resolver connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    NG 

    REPLACE REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY 

    Refer to REMOVAL [06/2020 - 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 - ]

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