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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (2GR-FXE) - Diagnostic Codes (7 Of 7) >> Hybrid Control System >> DTC U0110-160: Lost Communication with Drive Motor Control Module "A" [02/2014 - 11/2016] >> Procedure

DTC U0110-160: Lost Communication with Drive Motor Control Module "A" [02/2014 - 11/2016]: Procedure

  1. CLEAR DTC 

    Refer to PROCEDURE - Step 3

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  2

  2. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Check for DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Proceed to
      U0110-160 is output.
      U0110-160 is not output.
    5. Turn the power switch off.

    Result:  2

    U0110-160 is not output. 

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

    Result:  1

    U0110-160 is output. 

    See step  3

  3. CHECK INVERTER WITH CONVERTER ASSEMBLY (GENERATOR CABLE CONNECTION CONDITION) 

    Refer to PROCEDURE - Step 9 Refer to PROCEDURE - Step 9

    Result

    Result Proceed to
    The terminals are connected securely and there are no contact problems. There are no arc marks. A
    The terminals are not connected securely and there is a contact problem. There are arc marks. B
    The terminals are not connected securely and there is a contact problem. There are no arc marks. C
    The terminals are connected securely and there are no contact problems. There are arc marks. B

    Result:  2

    B 

    REPLACE MALFUNCTIONING PARTS 

    Result:  3

    C 

    CONNECT SECURELY 

    Result:  1

    A 

    See step  4

  4. CHECK INVERTER WITH CONVERTER ASSEMBLY (MOTOR CABLE CONNECTION CONDITION) 

    Refer to PROCEDURE - Step 10 Refer to PROCEDURE - Step 10

    Result

    Result Proceed to
    The terminals are connected securely and there are no contact problems. There are no arc marks. A
    The terminals are not connected securely and there is a contact problem. There are arc marks. B
    The terminals are not connected securely and there is a contact problem. There are no arc marks. C
    The terminals are connected securely and there are no contact problems. There are arc marks. B

    Result:  2

    B 

    REPLACE MALFUNCTIONING PARTS 

    Result:  3

    C 

    CONNECT SECURELY 

    Result:  1

    A 

    See step  5

  5. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MG1) 

    Refer to PROCEDURE - Step 11 Refer to PROCEDURE - Step 11

    Result

    Proceed to
    OK
    NG

    Result:  2

    NG 

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY. Refer to  COMPONENTS [02/2014 - 11/2015]  Refer to  COMPONENTS [11/2015 - 11/2016] 

    Result:  1

    OK 

    See step  6

  6. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MG2) 

    Refer to PROCEDURE - Step 12 Refer to PROCEDURE - Step 12

    Result

    Proceed to
    OK
    NG

    Result:  2

    NG 

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY. Refer to  COMPONENTS [02/2014 - 11/2015]  Refer to  COMPONENTS [11/2015 - 11/2016] 

    Result:  1

    OK 

    See step  7

  7. CHECK POWER MANAGEMENT CONTROL ECU (CHECK WAVEFORM) 
    1. Connect an oscilloscope between the power management control ECU terminals specified in the following table.
    2. Turn the power switch on (IG).
    3. Measure the waveform.
      GTY436840Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Power Management Control ECU)
      Item Contents
      Tester Connection CH1: A60-34 (HTM+) - F15-6 (E1)
      CH2: A60-33 (HTM-) - F15-6 (E1)
      Equipment Setting 1 V/DIV., 200 μs./DIV.
      Condition Power switch on (IG)

      Result

      Proceed to
      The waveform appears as shown in the illustration.
      The waveform differs from the one shown in the illustration.

      HINT: 

      • Inspect with the connector connected.
      • If pulses are generated, the shape of the waveform can be assumed to be normal.
      • The shape of the waveform may vary according to communication conditions.
    4. Turn the power switch off.

    Result:  2

    The waveform differs from the one shown in the illustration. 

    See step  14

    Result:  1

    The waveform appears as shown in the illustration. 

    See step  8

  8. CHECK POWER MANAGEMENT CONTROL ECU (CHECK WAVEFORM) 

    See step  9

    Result

    Proceed to
    The waveform appears as shown in the illustration.
    The waveform differs from the one shown in the illustration.

    Result:  2

    The waveform differs from the one shown in the illustration. 

    See step  12

    Result:  1

    The waveform appears as shown in the illustration. 

    See step  9

  9. CHECK POWER MANAGEMENT CONTROL ECU (CHECK WAVEFORM) 

    See step  10

    Result

    Proceed to
    The waveform appears as shown in the illustration.
    The waveform differs from the one shown in the illustration.

    Result:  1

    The waveform appears as shown in the illustration. 

    REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS. Refer to  DTC CHECK / CLEAR [02/2014 - 11/2016] 

    Result:  2

    The waveform differs from the one shown in the illustration. 

    See step  10

  10. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INVERTER WITH CONVERTER ASSEMBLY) 

    See step  14

    Result

    Proceed to
    OK
    NG

    Result:  2

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  1

    OK 

    See step  11

  11. CHECK INVERTER WITH CONVERTER ASSEMBLY 

    See step  15

    Result

    Proceed to
    OK
    NG

    Result:  1

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU. Refer to  COMPONENTS [02/2014 - 11/2016] 

    Result:  2

    NG 

    REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS. Refer to  DTC CHECK / CLEAR [02/2014 - 11/2016] 

  12. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INVERTER WITH CONVERTER ASSEMBLY) 

    See step  16

    Result

    Proceed to
    OK
    NG

    Result:  2

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  1

    OK 

    See step  13

  13. CHECK INVERTER WITH CONVERTER ASSEMBLY 

    See step  17

    Result

    Proceed to
    OK
    NG

    Result:  1

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU. Refer to  COMPONENTS [02/2014 - 11/2016] 

    Result:  2

    NG 

    REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS. Refer to  DTC CHECK / CLEAR [02/2014 - 11/2016] 

  14. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INVERTER WITH CONVERTER ASSEMBLY) 
    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 power switch on (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Disconnect the A60 power management control ECU connector.
    3. Disconnect the A46 inverter with converter assembly connector.
    4. Connect the cable to the negative (-) auxiliary battery terminal.
    5. Turn the power switch on (IG).
    6. Measure the voltage according to the value(s) in the table below.
      GTY435714Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Power Management Control ECU)
      *b Front view of wire harness connector
      (to Inverter with Converter Assembly)

      Standard Voltage

      Tester Connection Condition Specified Condition
      A60-34 (HTM+) - Body ground Power switch on (IG) Below 1 V
      A60-33 (HTM-) - Body ground Power switch on (IG) Below 1 V
      NOTE:

      Turning the power switch on (IG) with the connector of the power management control ECU and the inverter with converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    7. Turn the power switch off.
    8. Disconnect the cable from the negative (-) auxiliary battery terminal.
    9. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      A60-34 (HTM+) - A46-9 (HTM+) Power switch off Below 1 Ω
      A60-33 (HTM-) - A46-20 (HTM-) Power switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      A60-34 (HTM+) or A46-9 (HTM+) - Body ground and other terminals Power switch off 10 kΩ or higher
      A60-33 (HTM-) or A46-20 (HTM-) - Body ground and other terminals Power switch off 10 kΩ or higher
    10. Reconnect the A46 inverter with converter assembly connector.
    11. Reconnect the A60 power management control ECU connector.

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  1

    OK 

    See step  15

  15. CHECK INVERTER WITH CONVERTER ASSEMBLY 
    1. Disconnect the A60 power management control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY444567Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Power Management Control ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A60-34 (HTM+) - A60-33 (HTM-) Power switch off 80 to 170 Ω
    3. Reconnect the A60 power management control ECU connector.

      Result

      Proceed to
      OK
      NG

    Result:  1

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU. Refer to  COMPONENTS [02/2014 - 11/2016] 

    Result:  2

    NG 

    REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS. Refer to  DTC CHECK / CLEAR [02/2014 - 11/2016] 

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