LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2015 >> Prius C One >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Diagnostic Codes (P2511-149 - U0424-537) & Circuit Tests) >> Hybrid Control System >> DTC U0110-159: Lost Communication with Drive Motor Control Module "A"; DTC U0110-656: Lost Communication with Drive Motor Control Module "A"; DTC U0110-657: Lost Communication with Drive Motor Control Module "A" [12/2014 - ] >> Procedure

DTC U0110-159: Lost Communication with Drive Motor Control Module "A"; DTC U0110-656: Lost Communication with Drive Motor Control Module "A"; DTC U0110-657: Lost Communication with Drive Motor Control Module "A" [12/2014 - ]: Procedure

  1. CHECK FUSE (PCU) 
    1. Remove the PCU fuse from the No. 2 engine room relay block and No. 2 junction block assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY327657Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      PCU fuse terminals Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *1 No. 2 Engine Room Relay Block and No. 2 Junction Block Assembly
      *2 PCU Fuse
    3. Install the PCU fuse.

    NG → See step   18 

    OK: Go to next step 

  2. CLEAR DTC. Refer to  PROCEDURE - Step 4 

    NEXT: Go to next step 

  3. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON (IG) and wait for 2 minutes or more.
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Check if DTCs are output.

      Result

      Result Proceed to
      DTC U0110-159, 656 or 657 is output. A
      DTC U0110-159, 656 and 657 are not output. B
    5. Turn the ignition switch off.

    B → See step   27 

    A: Go to next step 

  4. CHECK INVERTER WITH CONVERTER ASSEMBLY (MOTOR CABLE (FOR MG1) CONNECTION CONDITION). Refer to  PROCEDURE - Step 9 

    B → REPLACE MALFUNCTIONING PARTS 

    C → CONNECT SECURELY 

    A: Go to next step 

  5. CHECK INVERTER WITH CONVERTER ASSEMBLY (MOTOR CABLE (FOR MG2) CONNECTION CONDITION). Refer to  PROCEDURE - Step 10 

    B → REPLACE MALFUNCTIONING PARTS 

    C → CONNECT SECURELY 

    A: Go to next step 

  6. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MG1). Refer to  PROCEDURE - Step 11 

    NG → See step   22 

    OK: Go to next step 

  7. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MG2). Refer to  PROCEDURE - Step 12 

    NG → See step   24 

    OK: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY POWER SOURCE CIRCUIT) 
    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 appropriate service information because this may cause a malfunction.

    2. Disconnect connector A47 from the inverter with converter assembly.
    3. Measure the resistance according to the value(s) in the table below.
      GTY328921Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      A47-28 (GND1) - Body ground Ignition switch off Below 1 Ω
      A47-27 (GND2) - Body ground Ignition switch off Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Inverter with Converter Assembly)
    4. Connect the cable to the negative (-) auxiliary battery terminal.
    5. Turn the ignition switch to ON (IG).
    6. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      A47-10 (+B) - Body ground Ignition switch ON (IG) 11 to 14 V
      A47-9 (+B2) - Body ground Ignition switch ON (IG) 11 to 14 V
      NOTE:

      Turning the ignition switch to ON (IG) with the low voltage connector of the inverter with converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    7. Turn the ignition switch off.
    8. Connect the inverter with converter assembly connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  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 ignition switch to ON (IG).
    3. Measure the waveform.
      GTY479367Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Item Contents
      Tester Connection CH1: A39-33 (CLK+) - G57-6 (E1)
      CH2: A39-32 (CLK-) - G57-6 (E1)
      Equipment Setting 1V/DIV., 1μs/DIV.
      Condition Ignition switch ON (IG)

      Result

      Result Proceed to
      The waveform appears as shown in the illustration. A
      The waveform differs from the one shown in the illustration. B
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Hybrid Vehicle Control ECU)

      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 ignition switch off.

    B → See step   12 

    A: Go to next step 

  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 ignition switch to ON (IG).
    3. Measure the waveform.
      GTY473609Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Item Contents
      Tester Connection CH1: A39-31 (REQ+) - G57-6 (E1)
      CH2: A39-30 (REQ-) - G57-6 (E1)
      Equipment Setting 1V/DIV., 1ms/DIV.
      Condition Ignition switch ON (IG)

      Result

      Result Proceed to
      The waveform appears as shown in the illustration. A
      The waveform differs from the one shown in the illustration. B
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Hybrid Vehicle Control ECU)

      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 ignition switch off.

    B → See step   14 

    A: Go to next step 

  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 ignition switch to ON (IG).
    3. Measure the waveform.
      GTY477419Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Item Contents
      Tester Connection CH1: A39-23 (MTH+) - G57-6 (E1)
      CH2: A39-22 (MTH-) - G57-6 (E1)
      Equipment Setting 1V/DIV., 200μs/DIV.
      Condition Ignition switch ON (IG)

      Result

      Result Proceed to
      The waveform appears as shown in the illustration. A
      The waveform differs from the one shown in the illustration. B
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Hybrid Vehicle Control ECU)

      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 ignition switch off.

    B → See step   16 

    A → See step   26 

  12. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE 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 ignition switch to ON (READY), unless instructed by the appropriate service information because this may cause a malfunction.

    2. Disconnect connector A39 from the hybrid vehicle control ECU.
    3. Disconnect connector A47 from the inverter with converter assembly.
    4. Connect the cable to the negative (-) auxiliary battery terminal.
    5. Turn the ignition switch to ON (IG).
    6. Measure the voltage according to the value(s) in the table below.
      GTY472909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      A39-33 (CLK+) - Body ground Ignition switch ON (IG) Below 1 V
      A39-32 (CLK-) - Body ground Ignition switch ON (IG) Below 1 V
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU)
      *b Front view of wire harness connector
      (to Inverter with Converter Assembly)
      NOTE:

      Turning the ignition switch to ON (IG) with the hybrid vehicle control ECU connector and the low voltage connector of the inverter with converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    7. Turn the ignition switch off.
    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Switch Condition Specified Condition
      A39-33 (CLK+) - A47-5 (CLK+) Ignition switch off Below 1 Ω
      A39-32 (CLK-) - A47-15 (CLK-) Ignition switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Switch Condition Specified Condition
      A39-33 (CLK+) or A47-5 (CLK+) - Body ground and other terminals Ignition switch off 10 kΩ or higher
      A39-32 (CLK-) or A47-15 (CLK-) - Body ground and other terminals Ignition switch off 10 kΩ or higher
    9. Disconnect the cable from the negative (-) auxiliary battery terminal.
    10. Connect the inverter with converter assembly connector.
    11. Connect the hybrid vehicle control ECU connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  13. CHECK INVERTER WITH CONVERTER ASSEMBLY 
    1. Disconnect connector A39 from the hybrid vehicle control ECU.
    2. Measure the resistance according to the value(s) in the table below.
      GTY477973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      A39-33 (CLK+) - A39-32 (CLK-) Ignition switch off 80 to 170 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU)
    3. Connect the hybrid vehicle control ECU connector.

    NG → See step   28 

    OK → See step   26 

  14. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE 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 ignition switch to ON (READY), unless instructed by the appropriate service information because this may cause a malfunction.

    2. Disconnect connector A39 from the hybrid vehicle control ECU.
    3. Disconnect connector A47 from the inverter with converter assembly.
    4. Connect the cable to the negative (-) auxiliary battery terminal.
    5. Turn the ignition switch to ON (IG).
    6. Measure the voltage according to the value(s) in the table below.
      GTY481117Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      A39-31 (REQ+) - Body ground Ignition switch ON (IG) Below 1 V
      A39-30 (REQ-) - Body ground Ignition switch ON (IG) Below 1 V
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU)
      *b Front view of wire harness connector
      (to Inverter with Converter Assembly)
      NOTE:

      Turning the ignition switch to ON (IG) with the hybrid vehicle control ECU connector and the low voltage connector of the inverter with converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    7. Turn the ignition switch off.
    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Switch Condition Specified Condition
      A39-31 (REQ+) - A47-6 (REQ+) Ignition switch off Below 1 Ω
      A39-30 (REQ-) - A47-16 (REQ-) Ignition switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Switch Condition Specified Condition
      A39-31 (REQ+) or A47-6 (REQ+) - Body ground and other terminals Ignition switch off 10 kΩ or higher
      A39-30 (REQ-) or A47-16 (REQ-) - Body ground and other terminals Ignition switch off 10 kΩ or higher
    9. Disconnect the cable from the negative (-) auxiliary battery terminal.
    10. Connect the inverter with converter assembly connector.
    11. Connect the hybrid vehicle control ECU connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  15. CHECK INVERTER WITH CONVERTER ASSEMBLY 
    1. Disconnect connector A39 from the hybrid vehicle control ECU.
    2. Measure the resistance according to the value(s) in the table below.
      GTY477975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      A39-31 (REQ+) - A39-30 (REQ-) Ignition switch off 80 to 170 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU)
    3. Connect the hybrid vehicle control ECU connector.

    NG → See step   28 

    OK → See step   26 

  16. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE 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 ignition switch to ON (READY), unless instructed by the appropriate service information because this may cause a malfunction.

    2. Disconnect connector A39 from the hybrid vehicle control ECU.
    3. Disconnect connector A47 from the inverter with converter assembly.
    4. Connect the cable to the negative (-) auxiliary battery terminal.
    5. Turn the ignition switch to ON (IG).
    6. Measure the voltage according to the value(s) in the table below.
      GTY472908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      A39-23 (MTH+) - Body ground Ignition switch ON (IG) Below 1 V
      A39-22 (MTH-) - Body ground Ignition switch ON (IG) Below 1 V
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU)
      *b Front view of wire harness connector
      (to Inverter with Converter Assembly)
      NOTE:

      Turning the ignition switch to ON (IG) with the hybrid vehicle control ECU connector and the low voltage connector of the inverter with converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    7. Turn the ignition switch off.
    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Switch Condition Specified Condition
      A39-23 (MTH+) - A47-7 (MTH+) Ignition switch off Below 1 Ω
      A39-22 (MTH-) - A47-17 (MTH-) Ignition switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Switch Condition Specified Condition
      A39-23 (MTH+) or A47-7 (MTH+) - Body ground and other terminals Ignition switch off 10 kΩ or higher
      A39-22 (MTH-) or A47-17 (MTH-) - Body ground and other terminals Ignition switch off 10 kΩ or higher
    9. Disconnect the cable from the negative (-) auxiliary battery terminal.
    10. Connect the inverter with converter assembly connector.
    11. Connect the hybrid vehicle control ECU connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  17. CHECK HYBRID VEHICLE CONTROL ECU 
    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 appropriate service information because this may cause a malfunction.

    2. Disconnect connector A47 from the inverter with converter assembly.
    3. Measure the resistance according to the value(s) in the table below.
      GTY480247Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      A39-23 (MTH+) - A39-22 (MTH-) Ignition switch off 80 to 170 Ω
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Hybrid Vehicle Control ECU)
    4. Connect the inverter with converter assembly connector.

    NG → See step   26 

    OK → See step   28 

  18. REPLACE FUSE (PCU) 
    1. Replace the PCU fuse.
      GTY327657Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 No. 2 Engine Room Relay Block and No. 2 Junction Block Assembly
      *2 PCU Fuse
    2. Turn the ignition switch to ON (READY).
    3. Check if there is an open circuit in the PCU fuse in the No. 2 engine room relay block and No. 2 junction block assembly.

      OK

      There is no open circuit in the PCU fuse.

      HINT: 

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

    4. Turn the ignition switch off.

    NG → See step   19 

    OK → COMPLETED 

  19. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - PCU FUSE) 
    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 appropriate service information because this may cause a malfunction.

    2. Remove the PCU fuse from the No. 2 engine room relay block and No. 2 junction block assembly.
      GTY327657Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 No. 2 Engine Room Relay Block and No. 2 Junction Block Assembly
      *2 PCU Fuse
    3. Disconnect connector A47 from the inverter with converter assembly.
    4. Measure the resistance according to the value(s) in the table below.
      GTY331163Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 No. 2 Engine Room Relay Block and No. 2 Junction Block Assembly *2 PCU Fuse
      *a Front view of wire harness connector
      (to Inverter with Converter Assembly)      		 - -

      Standard Resistance (Check for Short)

      Tester Connection Switch Condition Specified Condition
      A47-10 (+B), A47-9 (+B2) or 2 (PCU fuse terminal) - Body ground and other terminals Ignition switch off 10 kΩ or higher
    5. Connect the inverter with converter assembly connector.
    6. Install the PCU fuse.

    NG → See step   21 

    OK: Go to next step 

  20. REPLACE INVERTER WITH CONVERTER ASSEMBLY 

    Refer to COMPONENTS [12/2014 - ]

    NEXT → REPLACE FUSE (PCU) 

  21. REPAIR OR REPLACE HARNESS OR CONNECTOR 

    NEXT → REPLACE FUSE (PCU) 

  22. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MOTOR CABLE (FOR MG1) CONNECTION CONDITION). Refer to  PROCEDURE - Step 26 

    B → REPLACE MALFUNCTIONING PARTS 

    C → CONNECT SECURELY 

    A: Go to next step 

  23. CHECK MOTOR CABLE (FOR MG1). Refer to  PROCEDURE - Step 27 

    NG → See step   29 

    OK → See step   31 

  24. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MOTOR CABLE (FOR MG2) CONNECTION CONDITION). Refer to  PROCEDURE - Step 28 

    B → REPLACE MALFUNCTIONING PARTS 

    C → CONNECT SECURELY 

    A: Go to next step 

  25. CHECK MOTOR CABLE (FOR MG2). Refer to  PROCEDURE - Step 29 

    NG → See step   30 

    OK → See step   31 

  26. REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  COMPONENTS [12/2014 - ] 
  27. CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [12/2014 - ] 
  28. REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to  COMPONENTS [12/2014 - ] 
  29. REPLACE MOTOR CABLE. Refer to  COMPONENTS [12/2014 - ] 
  30. REPLACE MOTOR CABLE. Refer to  COMPONENTS [12/2014 - ] 
  31. REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY. Refer to  COMPONENTS [12/2014 - ] 
scientia non olet · About LEMON Manuals