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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 80 (Hybrid Control System (2GR-FXS) - Diagnostic Codes (4 Of 6)) >> Hybrid Control System >> DTC P0AE7-224: Hybrid Battery Precharge Contactor Control Circuit High [11/2016 - ] >> Procedure

DTC P0AE7-224: Hybrid Battery Precharge Contactor Control Circuit High [11/2016 - ]: Procedure

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE USING TECHSTREAM (SMRP STATUS) 
    1. Connect the Techstream to the DLC3
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Data List / SMRP Status.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      SMRP Status
    4. Read the Data List.

      Standard

      Tester Display Condition Specified Condition
      SMRP Status Power switch on (IG) OFF
    5. Turn the power switch off.

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    See step  4

    Result:  1

    OK 

    See step  2

  2. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR) 

    Refer to PROCEDURE - Step 1

    Result

    Proceed to
    OK
    NG

    Result:  2

    NG 

    CONNECT SECURELY 

    Result:  1

    OK 

    See step  3

  3. CHECK CONNECTOR CONNECTION CONDITION (HYBRID BATTERY JUNCTION BLOCK ASSEMBLY CONNECTOR) 

    See step  3

    Result

    Proceed to
    OK
    NG

    Result:  1

    OK 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [02/2014 - ] 

    Result:  2

    NG 

    CONNECT SECURELY 

  4. CHECK HARNESS AND CONNECTOR (SMRP VOLTAGE) 
    1. Turn the power switch on (IG).
    2. Measure the voltage according to the value(s) in the table below.
      GTY721976Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Hybrid Vehicle Control ECU Assembly)

      Standard Voltage

      Tester Connection Condition Specified Condition
      F136-3 (SMRP) - Body ground Power switch on (IG) Below 1 V
    3. Turn the power switch off.

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    See step  6

    Result:  1

    OK 

    See step  5

  5. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR) 

    Refer to PROCEDURE - Step 1

    Result

    Proceed to
    OK
    NG

    Result:  1

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  COMPONENTS [11/2016 - ] 

    Result:  2

    NG 

    CONNECT SECURELY 

  6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - BODY GROUND) 
    1. Disconnect the F136 hybrid vehicle control ECU assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY734902Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      F136-3 (SMRP) - Body ground Power switch off 141 to 212 Ω
    3. Reconnect the F136 hybrid vehicle control ECU assembly connector.

      Result

      Proceed to
      OK
      NG

    Result:  3

    NG 

    See step  8

    Result:  1

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (SHORT TO POWER SUPPLY WIRES) 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

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

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

    2. Remove the upper hybrid vehicle battery cover sub-assembly.

      Refer to PROCEDURE - Step 36

    3. Disconnect the x3 HV battery junction block assembly connector.
    4. Disconnect the F136 hybrid vehicle control ECU assembly connector.
    5. Turn the power switch on (IG).
    6. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      F136-3 (SMRP) or x3-3 (SMRP) - Body ground Power switch on (IG) Below 1 V
      NOTE:

      Turning the power switch on (IG) with the hybrid vehicle control ECU assembly connector and the HV battery junction block assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

      GTY695216Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU Assembly)
      *b Rear view of wire harness connector
      (to HV Battery Junction Block Assembly)
    7. Turn the power switch off.
    8. Reconnect the F136 hybrid vehicle control ECU assembly connector.
    9. Reconnect the x3 HV battery junction block assembly connector.
    10. Install the upper hybrid vehicle battery cover sub-assembly.

      Result

      Proceed to
      OK
      NG

    Result:  1

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  COMPONENTS [11/2016 - ] 

    Result:  2

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  8. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - HYBRID BATTERY JUNCTION BLOCK ASSEMBLY) 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

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

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

    2. Remove the upper hybrid vehicle battery cover sub-assembly.

      Refer to PROCEDURE - Step 36

    3. Disconnect the x3 hybrid battery junction block assembly connector.
    4. Disconnect the F136 hybrid vehicle control ECU assembly connector.
    5. Measure the resistance according to the value(s) in the table below.
      GTY695216Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU Assembly)
      *b Rear view of wire harness connector
      (to Hybrid Battery Junction Block Assembly)

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      F136-3 (SMRP) - x3-3 (SMRP) Power switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      F136-3 (SMRP) and x3-3 (SMRP) - Body ground and other terminals Power switch off 10 kΩ or higher
    6. Reconnect the F136 hybrid vehicle control ECU assembly connector.
    7. Reconnect the x3 hybrid battery junction block assembly connector.
    8. Install the upper hybrid vehicle battery cover sub-assembly.

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  1

    OK 

    See step  9

  9. CHECK HARNESS AND CONNECTOR (HYBRID BATTERY JUNCTION BLOCK ASSEMBLY - BODY GROUND) 

    See step  9

    Result

    Proceed to
    OK
    NG

    Result:  2

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  3

    OK 

    See step  10

  10. INSPECT HV BATTERY JUNCTION BLOCK ASSEMBLY (SMRP) 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

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

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

    2. Remove the hybrid battery junction block assembly.

      Refer to COMPONENTS [02/2014 - ]

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      x3-3 (SMRP) - x3-2 (GND) -40 to 80°C (-40 to 176°F) 112 to 274 Ω
      GTY438361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Hybrid Battery Junction Block Assembly)
    4. Install the hybrid battery junction block assembly.

      Result

      Proceed to
      OK
      NG

    Result:  1

    OK 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [02/2014 - ] 

    Result:  2

    NG 

    REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY. Refer to  COMPONENTS [02/2014 - ] 

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