HYBRID CONTROL SYSTEM, Diagnostic DTC:U0110-159, U0110-656, U0110-657

DTC Code DTC Name
U0110-159 Lost Communication with Drive Motor Control Module "A"
U0110-656 Lost Communication with Drive Motor Control Module "A"
U0110-657 Lost Communication with Drive Motor Control Module "A"

DESCRIPTION

For a description of the inverter.

Click here

The MG ECU, which is built into in the inverter with converter assembly, controls motor (MG2) based on commands from the hybrid vehicle control ECU. The MG ECU monitors communication data and detects malfunctions.

The hybrid vehicle control ECU monitors communication data and detects malfunctions.

A communication error between the MG ECU and hybrid vehicle control ECU.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
U0110-159 Lost Communication with Drive Motor Control Module "A"

Error in reception from inverter with converter assembly (MG ECU) via serial communication (out of communication standard)

(1 trip detection logic)

  • Wire harness or connector

  • Inverter with converter assembly

  • Hybrid vehicle transaxle assembly

  • Hybrid vehicle control ECU

  • PCU fuse

 Does not come on

Master Warning Light:

Comes on
U0110-656 Lost Communication with Drive Motor Control Module "A"

Error in reception from inverter with converter assembly (MG ECU) via serial communication (out of communication standard)

(1 trip detection logic)

  • Wire harness or connector

  • Inverter with converter assembly

  • Hybrid vehicle transaxle assembly

  • Hybrid vehicle control ECU

  • PCU fuse

 Does not come on

Master Warning Light:

Comes on
U0110-657 Lost Communication with Drive Motor Control Module "A"

Error in reception from inverter with converter assembly (MG ECU) via serial communication (no reception)

(1 trip detection logic)

  • Wire harness or connector

  • Inverter with converter assembly

  • Hybrid vehicle transaxle assembly

  • Hybrid vehicle control ECU

  • PCU fuse

 Does not come on

Master Warning Light:

Comes on

WIRING DIAGRAM

Refer to the wiring diagram for the inverter low-voltage circuit.

Click here

Refer to the wiring diagram for DTC P0AA6-526.

Click here

CAUTION / NOTICE / HINT

CAUTION:


  • Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

  • After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

    Click here

    Tech Tips

    Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

Note


  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

    Click here

  • If DTCs U0110-159, U0110-656, and/or U0110-657 were stored due to incomplete engagement of the connectors, and the system returns to normal when the power switch is turned on (IG) after clearing the DTCs, DTC P324E-788 will be stored. Proceed to troubleshooting without considering DTC P324E-788.

Tech Tips

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Turn the power switch on (IG) and wait for 2 minutes or more.

PROCEDURE


  1. INSPECT FUSE (PCU)


    1. Remove the PCU fuse from the No. 1 engine room relay block.

    2. B002I1OC01
      *1 No. 1 Engine Room Relay Block
      *2 PCU Fuse

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      PCU fuse terminals Always Below 1 Ω

    3. Install the PCU fuse.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FUSE (PCU) Click here

    OK

  2. CLEAR DTC

    Result
    Proceed to
    NEXT

    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Read and record the DTCs and freeze frame data.


      Powertrain > Hybrid Control > Trouble Codes

    5. Clear the DTCs and freeze frame data.


      Powertrain > Hybrid Control > Clear DTCs

    6. Turn the power switch off.

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS 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
      U0110-159, 656 or 657 is output.
      U0110-159, 656 and 657 are not output.

    5. Turn the power switch off.


    U0110-159, 656 and 657 are not output.

    CHECK FOR INTERMITTENT PROBLEMS Click here

    U0110-159, 656 or 657 is output.

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

    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

    CAUTION:

    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 manual because this may cause a malfunction.

    2. B002HX4C02
      *A for 2WD
      *B for AWD

      Remove the inverter cover UPR from the inverter with converter assembly.

    3. B002KL1C02
      *A for 2WD
      *B for AWD
      *1 Generator Cable

      Check that the bolts for the generator cable are tightened to the specified torque, the generator cable is connected securely, and there are no contact problems.

      Specified Condition
      T = 8.0 N*m (82 kgf*cm, 71 in.*lbf)

      Note

      Make sure that the tightening torque of the bolt is between 6.4 and 9.6 N*m (65 and 98 kgf*cm, 57 and 85 in.*lbf).

    4. Disconnect the generator cable from the inverter with converter assembly.

    5. Check for arc marks at the terminals for the generator cable.

      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

    6. Connect the generator cable to the inverter with converter assembly.

    7. Install the inverter cover UPR.


    B

    REPLACE MALFUNCTIONING PARTS

    C

    CONNECT SECURELY

    A

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

    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

    CAUTION:

    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 manual because this may cause a malfunction.

    2. B002JCXC02
      *A for 2WD
      *B for AWD

      Remove the inverter cover UPR from the inverter with converter assembly.

    3. B002JW4C02
      *A for 2WD
      *B for AWD
      *1 Motor Cable

      Check that the bolts for the motor cable are tightened to the specified torque, the motor cable is connected securely, and there are no contact problems.

      Specified Condition
      T = 8.0 N*m (82 kgf*cm, 71 in.*lbf)

      Note

      Make sure that the tightening torque of the bolt is between 6.4 and 9.6 N*m (65 and 98 kgf*cm, 57 and 85 in.*lbf).

    4. Disconnect the motor cable from the inverter with converter assembly.

    5. Check for arc marks at the terminals for the motor cable.

      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

    6. Connect the motor cable to the inverter with converter assembly.

    7. Install the inverter cover UPR.


    B

    REPLACE MALFUNCTIONING PARTS

    C

    CONNECT SECURELY

    A

  6. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (GENERATOR (MG1))

    Result
    Proceed to
    OK
    NG

    CAUTION:

    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 manual because this may cause a malfunction.

    2. B002HX4C02
      *A for 2WD
      *B for AWD

      Remove the inverter cover UPR from the inverter with converter assembly.

    3. B002KL1C02
      *A for 2WD
      *B for AWD
      *1 Generator Cable

      Disconnect the generator cable from the inverter with converter assembly.

    4. B002JCBC40
      *1 Shield Ground
      *a

      Generator Cable

      (Inverter with Converter Assembly Side)

      Check the generator (MG1) for an interphase short using a milliohmmeter.


      1. Using a milliohmmeter, measure the resistance according to the value(s) in the table below.

        Tech Tips

        If the generator (MG1) temperature is high, the resistance will vary greatly from the specification. Therefore, measure the resistance at least 8 hours after the vehicle is stopped.

        Standard Resistance
        Tester Connection Condition Specified Condition
        w1-1 (W) - w1-3 (U) Power switch off 59.1 to 67.5 mΩ
        w1-2 (V) - w1-1 (W) Power switch off 59.1 to 67.5 mΩ
        w1-3 (U) -w1-2 (V) Power switch off 62.1 to 70.5 mΩ

        Tech Tips

        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).)

    5. When checking for a short circuit between generator phases without using a milliohmmeter.

      Note

      The generator generates current when wheels are rotated by hand. Before performing the inspection, wrap the generator cable terminals with tape (non-residue type) or equivalent.

      Tech Tips

      A short circuit between the generator phases can be checked simply without using a milliohmmeter.


      1. Connect the cable to the negative (-) auxiliary battery terminal.

      2. Turn the power switch on (IG).

        Note

        Turning the power switch on (IG) with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

      3. Move the shift lever to N.

      4. Lift up the vehicle.

      5. Rotate the front wheels in the same direction simultaneously by hand.

        Standard
        Left and right wheels rotate smoothly (No short circuit between phases)

        Tech Tips

        If a short circuit exists between the generator phases, the front wheels do not rotate smoothly (some resistance is felt).

      6. Lower the vehicle.

      7. Move the shift lever to P.

      8. Turn the power switch off.

      9. Disconnect the cable from the negative (-) auxiliary battery terminal.

    6. Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below.

      Note

      Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      Standard Resistance
      Tester Connection Condition Specified Condition
      w1-1 (W) - Body ground and shield ground Power switch off 100 MΩ or higher
      w1-2 (V) - Body ground and shield ground Power switch off 100 MΩ or higher
      w1-3 (U) - Body ground and shield ground Power switch off 100 MΩ or higher

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

      Tech Tips

      Perform this procedure only when checking for a short circuit between generator phases without using a milliohmmeter.

      Standard Resistance
      Tester Connection Condition Specified Condition
      w1-1 (W) - w1-2 (V) Power switch off Below 1 Ω
      w1-2 (V) - w1-3 (U) Power switch off Below 1 Ω

    8. Reconnect the generator cable.

    9. Install the inverter cover UPR.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here

    OK

  7. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MOTOR (MG2))

    Result
    Proceed to
    OK
    NG

    CAUTION:

    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 manual because this may cause a malfunction.

    2. B002JCXC02
      *A for 2WD
      *B for AWD

      Remove the inverter cover UPR from the inverter with converter assembly.

    3. B002JW4C02
      *A for 2WD
      *B for AWD
      *1 Motor Cable

      Disconnect the motor cable from the inverter with converter assembly.

    4. B002JCBC41
      *1 Shield Ground
      *a

      Motor Cable

      (Inverter with Converter Assembly Side)

      Check the motor (MG2) for an interphase short using a milliohmmeter.


      1. Using a milliohmmeter, measure the resistance according to the value(s) in the table below.

        Tech Tips

        If the motor (MG2) temperature is high, the resistance will vary greatly from the specification. Therefore, measure the resistance at least 8 hours after the vehicle is stopped.

        Standard Resistance
        Tester Connection Condition Specified Condition
        v1-1 (W) - v1-3 (U) Power switch off 71.4 to 81.0 mΩ
        v1-2 (V) - v1-1 (W) Power switch off 71.4 to 81.0 mΩ
        v1-3 (U) - v1-2 (V) Power switch off 74.4 to 84.1 mΩ

        Tech Tips

        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).)

    5. When checking for a short circuit between motor phases without using a milliohmmeter.

      Note

      The motor generates current when wheels are rotated by hand. Before performing the inspection, wrap the motor cable terminals with tape (non-residue type) or equivalent.

      Tech Tips

      A short circuit between the motor phases can be checked simply without using a milliohmmeter.


      1. Connect the cable to the negative (-) auxiliary battery terminal.

      2. Turn the power switch on (IG).

        Note

        Turning the power switch on (IG) with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

      3. Move the shift lever to N.

      4. Lift up the vehicle.

      5. Rotate the front wheels in the same direction simultaneously by hand.

        Standard
        Left and right wheels rotate smoothly (No short circuit between phases)

        Tech Tips

        If a short circuit exists between the motor phases, the front wheels do not rotate smoothly (some resistance is felt).

      6. Lower the vehicle.

      7. Move the shift lever to P.

      8. Turn the power switch off.

      9. Disconnect the cable from the negative (-) auxiliary battery terminal.

    6. Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below.

      Note

      Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      Standard Resistance
      Tester Connection Condition Specified Condition
      v1-1 (W) - Body ground and shield ground Power switch off 100 MΩ or higher
      v1-2 (V) - Body ground and shield ground Power switch off 100 MΩ or higher
      v1-3 (U) - Body ground and shield ground Power switch off 100 MΩ or higher

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

      Tech Tips

      Perform this procedure only when checking for a short circuit between motor phases without using a milliohmmeter.

      Standard Resistance
      Tester Connection Condition Specified Condition
      v1-1 (W) - v1-2 (V) Power switch off Below 1 Ω
      v1-2 (V) - v1-3 (U) Power switch off Below 1 Ω

    8. Reconnect the motor cable.

    9. Install the inverter cover UPR.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY POWER SOURCE CIRCUIT)

    CAUTION:

    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 manual because this may cause a malfunction.

    2. Disconnect the A58 inverter with converter assembly connector.

    3. B002I76C68
      *a

      Front view of wire harness connector

      (to Inverter with Converter Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-10 (GND1) - Body ground Power switch off Below 1 Ω
      A58-11 (GND2) - Body ground Power switch off Below 1 Ω

    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.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A58-30 (+B) - Body ground Power switch on (IG) 11 to 14 V
      A58-31 (+B2) - Body ground Power switch on (IG) 11 to 14 V

      Note

      Turning the power switch on (IG) with 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. Reconnect the A58 inverter with converter assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK HYBRID VEHICLE CONTROL ECU (CHECK WAVEFORM)


    1. Connect an oscilloscope between the hybrid vehicle control ECU terminals specified in the following table.

    2. Turn the power switch on (IG).

    3. B002HHMC12
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU)

      Measure the waveform.

      Item Contents
      Tester Connection

      CH1: A61-33 (CLK+) - I115-6 (E1)

      CH2: A61-32 (CLK-) - I115-6 (E1)
      Equipment Setting 1 V/DIV., 1 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.

      Tech Tips


      • 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.


    The waveform differs from the one shown in the illustration.

    CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - INVERTER WITH CONVERTER ASSEMBLY) Click here

    The waveform appears as shown in the illustration.

  10. CHECK HYBRID VEHICLE CONTROL ECU (CHECK WAVEFORM)


    1. Connect an oscilloscope between the hybrid vehicle control ECU terminals specified in the following table.

    2. Turn the power switch on (IG).

    3. B002JZ8C12
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU)

      Measure the waveform.

      Item Contents
      Tester Connection

      CH1: A61-31 (REQ+) - I115-6 (E1)

      CH2: A61-30 (REQ-) - I115-6 (E1)
      Equipment Setting 1 V/DIV., 1 ms./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.

      Tech Tips


      • 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.


    The waveform differs from the one shown in the illustration.

    CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - INVERTER WITH CONVERTER ASSEMBLY) Click here

    The waveform appears as shown in the illustration.

  11. CHECK HYBRID VEHICLE CONTROL ECU (CHECK WAVEFORM)


    1. Connect an oscilloscope between the hybrid vehicle control ECU terminals specified in the following table.

    2. Turn the power switch on (IG).

    3. B002J5YC20
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU)

      Measure the waveform.

      Item Contents
      Tester Connection

      CH1: A61-23 (MTH+) - I115-6 (E1)

      CH2: A61-22 (MTH-) - I115-6 (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.

      Tech Tips


      • 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.


    The waveform appears as shown in the illustration.

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    The waveform differs from the one shown in the illustration.

    CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - INVERTER WITH CONVERTER ASSEMBLY) Click here

  12. REPLACE FUSE (PCU)


    1. B002I1OC01
      *1 No. 1 Engine Room Relay Block
      *2 PCU Fuse

      Replace the PCU fuse.

    2. Turn the power switch on (READY).

    3. Check if there is an open circuit in the PCU fuse in the No. 1 engine room relay block.

      OK
      There is no open circuit in the PCU fuse.

      Tech Tips

      If the fuse does not become open again after turning the power switch on (READY), it can be assumed that the previous fuse failed due to age.

    4. Turn the power switch off.

      Result
      Proceed to
      OK
      NG

    OK

    COMPLETED

    NG

    CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - NO. 1 ENGINE ROOM RELAY BLOCK) Click here

  13. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - INVERTER WITH CONVERTER ASSEMBLY)

    CAUTION:

    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 manual because this may cause a malfunction.

    2. Disconnect the A61 hybrid vehicle control ECU connector.

    3. Disconnect the A58 inverter with converter assembly connector.

    4. Connect the cable to the negative (-) auxiliary battery terminal.

    5. Turn the power switch on (IG).

    6. B002H2TC05
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)
      *b

      Front view of wire harness connector

      (to Inverter with Converter Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A61-33 (CLK+) - Body ground Power switch on (IG) Below 1 V
      A61-32 (CLK-) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the hybrid vehicle control ECU connector 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
      A61-33 (CLK+) - A58-7 (CLK+) Power switch off Below 1 Ω
      A61-32 (CLK-) - A58-18 (CLK-) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A61-33 (CLK+) or A58-7 (CLK+) - Body ground and other terminals Power switch off 10 kΩ or higher
      A61-32 (CLK-) or A58-18 (CLK-) - Body ground and other terminals Power switch off 10 kΩ or higher

    10. Reconnect the A58 inverter with converter assembly connector.

    11. Reconnect the A61 hybrid vehicle control ECU connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  14. CHECK INVERTER WITH CONVERTER ASSEMBLY


    1. Disconnect the A61 hybrid vehicle control ECU connector.

    2. B002KRZC04
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A61-33 (CLK+) - A61-32 (CLK-) Power switch off 80 to 170 Ω

    3. Reconnect the A61 hybrid vehicle control ECU connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

  15. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - INVERTER WITH CONVERTER ASSEMBLY)

    CAUTION:

    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 manual because this may cause a malfunction.

    2. Disconnect the A61 hybrid vehicle control ECU connector.

    3. Disconnect the A58 inverter with converter assembly connector.

    4. Connect the cable to the negative (-) auxiliary battery terminal.

    5. Turn the power switch on (IG).

    6. B002H2TC06
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)
      *b

      Front view of wire harness connector

      (to Inverter with Converter Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A61-31 (REQ+) - Body ground Power switch on (IG) Below 1 V
      A61-30(REQ-) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the hybrid vehicle control ECU connector 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
      A61-31 (REQ+) - A58-26 (REQ+) Power switch off Below 1 Ω
      A61-30(REQ-) - A58-37 (REQ-) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A61-31 (REQ+) or A58-26 (REQ+) - Body ground and other terminals Power switch off 10 kΩ or higher
      A61-30(REQ-) or A58-37 (REQ-) - Body ground and other terminals Power switch off 10 kΩ or higher

    10. Reconnect the A58 inverter with converter assembly connector.

    11. Reconnect the A61 hybrid vehicle control ECU connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  16. CHECK INVERTER WITH CONVERTER ASSEMBLY


    1. Disconnect the A61 hybrid vehicle control ECU connector.

    2. B002KRZC05
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A61-31 (REQ+) - A61-30 (REQ-) Power switch off 80 to 170 Ω

    3. Reconnect the A61 hybrid vehicle control ECU connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

  17. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - INVERTER WITH CONVERTER ASSEMBLY)

    CAUTION:

    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 manual because this may cause a malfunction.

    2. Disconnect the A61 hybrid vehicle control ECU connector.

    3. Disconnect the A58 inverter with converter assembly connector.

    4. Connect the cable to the negative (-) auxiliary battery terminal.

    5. Turn the power switch on (IG).

    6. B002H2TC07
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)
      *b

      Front view of wire harness connector

      (to Inverter with Converter Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A61-23 (MTH+) - Body ground Power switch on (IG) Below 1 V
      A61-22 (MTH-) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the hybrid vehicle control ECU connector 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
      A61-23 (MTH+) - A58-8 (MTH+) Power switch off Below 1 Ω
      A61-22 (MTH-) - A58-19 (MTH-) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A61-23 (MTH+) or A58-8 (MTH+) - Body ground and other terminals Power switch off 10 kΩ or higher
      A61-22 (MTH-) or A58-19 (MTH-) - Body ground and other terminals Power switch off 10 kΩ or higher

    10. Reconnect the A58 inverter with converter assembly connector.

    11. Reconnect the A61 hybrid vehicle control ECU connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  18. CHECK INVERTER WITH CONVERTER ASSEMBLY

    CAUTION:

    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 manual because this may cause a malfunction.

    2. Disconnect the A58 inverter with converter assembly connector.

    3. B002HCWC31
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A61-23 (MTH+) -A61-22 (MTH-) Power switch off 80 to 170 Ω

    4. Reconnect the A58 inverter with converter assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

    NG

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

  19. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - NO. 1 ENGINE ROOM RELAY BLOCK)

    CAUTION:

    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 manual because this may cause a malfunction.

    2. Remove the PCU fuse from the No. 1 engine room relay block.

    3. Disconnect the A58 inverter with converter assembly connector.

      Click here

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

      B002HZ2C01
      *1 No. 1 Engine Room Relay Block *2 PCU Fuse
      *a

      Front view of wire harness connector

      (to Inverter with Converter Assembly)

      		 - -
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A58-30 (+B), A58-31 (+B2) or 2 (PCU fuse terminal) - Body ground and other terminals Power switch off 10 kΩ or higher

    5. Reconnect the A58 inverter with converter assembly connector.

    6. Install the PCU fuse.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  20. REPLACE INVERTER WITH CONVERTER ASSEMBLY

    Click here

    Result
    Proceed to
    NEXT

    NEXT

    REPLACE FUSE (PCU)

  21. REPAIR OR REPLACE HARNESS OR CONNECTOR

    Result
    Proceed to
    NEXT

    NEXT

    REPLACE FUSE (PCU)