HYBRID CONTROL SYSTEM, Diagnostic DTC:P1C2D62

DTC Code DTC Name
P1C2D62 Hybrid/EV Battery "A" Voltage Sensor/Boosting Converter Voltage Sensor "A" Signal Compare Failure

DTC SUMMARY


  1. MALFUNCTION DESCRIPTION

    The hybrid vehicle control ECU detects a VB sensor or VL sensor malfunction.

    The cause of this malfunction may be one of the following:


      Inverter voltage (VB or VL) sensor internal circuit malfunction

    • Voltage sensor malfunction

    • Motor generator control ECU (MG ECU) malfunction

    • Communication (wire harness) malfunction


      High voltage system malfunction

    • HV battery malfunction

    • HV battery junction block assembly malfunction

    • Inverter with converter assembly malfunction

    • High-voltage wire harness malfunction

    • High-voltage connector or connection malfunction

  2. Inspection Overview

    Inspection Content Reason (Narrow Down in Order Using Inspection Procedures Below) Inspection Step
    Check for DTCs (HV) Output DTCs 1

    Check for DTCs (check voltage sensor malfunction locations)

    Check for DTCs (drive test)

    		 Put vehicle in ready ON (vehicle stopped or being driven) and then check whether DTCs are output again. 3, 4
    Read value using GTS Data List value 5
    Check freeze frame data (HV) FREEZE FRAME DATA 6, 7
    Read value using GTS Accelerator and brake pedal simultaneously depressed Data List value 8

DESCRIPTION

For a description of the boost converter.

Click here

The MG ECU uses a voltage sensor (VL) that is built into the boost converter to detect the high voltage before it is boosted. The ECU also uses the battery voltage sensor to detect HV battery voltage (VB).

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P1C2D62 Hybrid/EV Battery "A" Voltage Sensor/Boosting Converter Voltage Sensor "A" Signal Compare Failure

Voltages from HV battery voltage (VB) sensor and boost converter voltage (VL) sensor deviate:

Difference between "VL-Voltage before Boosting" and "Hybrid Battery Voltage" is large when the boosting request is given.

(1 trip detection logic)

  • Inverter with converter assembly

  • Battery voltage sensor

 Comes on

Master Warning Light:

Comes on
Related Data List
DTC No. Data List
P1C2D62

  • Hybrid Battery Voltage

  • VL-Voltage before Boosting

  • VH-Voltage after Boosting

  • Boost Ratio

CONFIRMATION DRIVING PATTERN

Tech Tips

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click here


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off and wait for 2 minutes or more.

  5. Turn the power switch on (IG) and turn the GTS on.

  6. Turn the power switch on (READY).

  7. With the shift lever in D, depress both the accelerator pedal and brake pedal at the same time to raise the "Hybrid Battery SOC" to a sufficient level.

  8. Move the shift lever to P, check that the engine is stopped and move the shift lever to N.

  9. Set the A/C for maximum cooling.

  10. Leave the vehicle for a few minutes.

    Tech Tips

    When the accelerator pedal is not depressed with the power switch on (READY) and shift lever in P, if "VL-Voltage before Boosting" and the "Hybrid Battery Voltage" is approximately the same after repair, the condition is judged as normal.

  11. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.

  12. Check the DTC judgment result.

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

PROCEDURE


  1. CHECK DTC OUTPUT (HYBRID CONTROL, MOTOR GENERATOR)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Check for DTCs.


      Powertrain > Hybrid Control > Trouble Codes
      Powertrain > Motor Generator > Trouble Codes
      Result
      Result Proceed to

        One of the following applies:

      • Only P1C2D62 is output.

      • One or more DTCs other than P0E311C, P0CA300, P0B231C, and DTCs in the table below are also output.

      		 A
      P1C2D62 and P0E311C or P0CA300 are output at the same time. B
      P1C2D62 and P0B231C are output at the same time. C
      DTCs of hybrid control system in the tables below are output. D
      DTCs of motor generator control system in the tables below are output. E
      Malfunction Content System Relevant DTC
      Microcomputer malfunction Hybrid control system P060647 Hybrid/EV Powertrain Control Module Processor Watchdog / Safety MCU Failure
      P0A1B49 Drive Motor "A" Control Module Internal Electronic Failure
      P0AFC00 Hybrid/EV Battery Sensor Module
      P0AFC96 Hybrid/EV Battery Sensor Module Component Internal Failure
      Motor generator control system P0A1A47 Generator Control Module Watchdog / Safety μC Failure
      P0A1A49 Generator Control Module Internal Electronic Failure
      P0A1B1F Generator Control Module Circuit Intermittent
      P1C2A1C Generator A/D Converter Circuit Circuit Voltage Out of Range
      P1C2A49 Generator A/D Converter Circuit Internal Electronic Failure
      P313383 Communication Error from Generator to Drive Motor "A" Value of Signal Protection Calculation Incorrect
      P313386 Communication Error from Generator to Drive Motor "A" Signal Invalid
      P313387 Communication Error from Generator to Drive Motor "A" Missing Message
      Power source circuit malfunction Hybrid control system P0AFC16 Hybrid/EV Battery Sensor Module Circuit Voltage Below Threshold
      Motor generator control system P06D61C Generator Control Module Offset Power Circuit Voltage Out of Range
      Communication system malfunction Hybrid control system P312387 Lost Communication with Drive Motor Control Module "A" from Hybrid/EV Control Module Missing Message
      U029A87 Lost Communication with Hybrid/EV Battery Sensor Module Missing Message
      Sensor and actuator circuit malfunction Hybrid control system P0B3B14 Hybrid/EV Battery Voltage Sensor "A" Circuit Short to Ground or Open
      P0B4014 Hybrid/EV Battery Voltage Sensor "B" Circuit Short to Ground or Open
      P0B4514 Hybrid/EV Battery Voltage Sensor "C" Circuit Short to Ground or Open
      P0B4A14 Hybrid/EV Battery Voltage Sensor "D" Circuit Short to Ground or Open
      P0B4F14 Hybrid/EV Battery Voltage Sensor "E" Circuit Short to Ground or Open
      P0B5414 Hybrid/EV Battery Voltage Sensor "F" Circuit Short to Ground or Open
      P0B5914 Hybrid/EV Battery Voltage Sensor "G" Circuit Short to Ground or Open
      P0B5E14 Hybrid/EV Battery Voltage Sensor "H" Circuit Short to Ground or Open
      P0B6314 Hybrid/EV Battery Voltage Sensor "I" Circuit Short to Ground or Open
      P0B6814 Hybrid/EV Battery Voltage Sensor "J" Circuit Short to Ground or Open
      P308A13 Hybrid/EV Battery Voltage Sensor All Circuit Open
      P0AFC62 Hybrid/EV Battery Sensor Module Signal Compare Failure
      P308A12 Hybrid/EV Battery Voltage Sensor All Circuit Short to Auxiliary Battery
      System malfunction Motor generator control system P0E3116 DC/DC Converter Voltage Sensor "A" (VL) Circuit Voltage Below Threshold
      P0E3117 DC/DC Converter Voltage Sensor "A" (VL) Circuit Voltage Above Threshold

      Tech Tips


      • P1C2D62 may be output as a result of the malfunction indicated by the DTCs above.


        1. The chart above is listed in inspection order of priority.

        2. Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)

    5. Turn the power switch off.


    B

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

    C

    REPLACE BATTERY VOLTAGE SENSOR Click here

    D

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    E

    GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM) Click here

    A

  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 (CHECK FAILURE PART)


    1. Apply the parking brake and secure the wheels using chocks.

    2. Connect the GTS to the DLC3. *1

    3. Turn the power switch on (READY). *2

    4. Enter the following menus: Powertrain / Hybrid Control / Data List. *3

    5. If the value of "Hybrid Battery SOC" is less than 55%, shift lever in D and charge the HV battery by depressing the accelerator pedal and brake pedal simultaneously until the value reaches 55% or more. *4


      Powertrain > Hybrid Control > Data List
      Tester Display
      Hybrid Battery SOC

    6. Make sure that the shift lever is in P position. *5

    7. Set the air conditioning to MAX COOL and turn the headlights on. *6

    8. Confirm that "Hybrid Battery Current" is more than 3 A. *7


      Powertrain > Hybrid Control > Data List
      Tester Display
      Hybrid Battery Current

    9. With the engine stopped and the conditions of steps *5, *6 and *7 satisfied, leave the vehicle for 15 seconds. *8

    10. Enter the following menus: Powertrain / Hybrid Control / Trouble codes. *9

    11. Check for DTCs. *10


      Powertrain > Hybrid Control > Trouble Codes

      Note

      If the low HV battery information comes on, move the shift lever to P and start the engine to charge the HV battery. After the engine stops, perform steps *1 through *10 again.

      Result
      Result Proceed to
      No DTCs are output, or DTCs except the following are output. A
      P0E311C or P0CA300 are output. B
      P0B231C or P1C8349 are output. C
      P300000 is output. D

    12. Turn the power switch off.


    B

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

    C

    REPLACE BATTERY VOLTAGE SENSOR Click here

    D

    LEAVE VEHICLE WITH SHIFT LEVER IN P, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS (PERFORM STEPS *1 THROUGH *10)

    A

  4. CHECK DTC OUTPUT (ROAD TEST)


    1. Turn the power switch on (READY). *11

    2. Perform a road test that repeats full acceleration to 60 km/h (37 mph) and then braking to a complete stop three times. *12

      CAUTION:

      Perform this road test only in an appropriate safe location, in accordance with all local laws.

      Tech Tips

      This road test is performed to drive the car under high load and cause a change in the HV battery voltage.

    3. Connect the GTS to the DLC3. *13

    4. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. *14

    5. Check for DTCs. *15


      Powertrain > Hybrid Control > Trouble Codes
      Result
      Result Proceed to
      No DTCs are output, or DTCs except the following are output. A
      P0E311C or P0CA300 are output. B
      P0B231C or P1C8349 are output. C
      P300000 is output. D

    6. Turn the power switch off.


    B

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

    C

    REPLACE BATTERY VOLTAGE SENSOR Click here

    D

    LEAVE VEHICLE WITH SHIFT LEVER IN P, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS (PERFORM STEPS *11 THROUGH *15)

    A

  5. READ VALUE USING GTS (DATA LIST)


    1. Apply the parking brake and secure the wheels using chocks.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (READY).

    4. Enter the following menus: Powertrain / Hybrid Control / Data List.


      Powertrain > Hybrid Control > Data List
      Tester Display
      Hybrid Battery SOC

    5. If the value of "Hybrid Battery SOC" is less than 55%, shift lever in D and charge the HV battery by depressing the accelerator pedal and brake pedal simultaneously until the value reaches 55% or more. *4

    6. Release the accelerator pedal, move the shift lever to P and wait for the engine to stop. Read the Data List when the engine stops.

      Tech Tips

      If the engine starts, wait until it stops before continuing.


      Powertrain > Hybrid Control > Data List
      Tester Display
      VL-Voltage before Boosting
      VH-Voltage after Boosting
      Hybrid Battery Voltage
      Result
      Result Proceed to
      Both of the following are not satisfied. A

      Both of the following are satisfied:


      • Difference between "Hybrid Battery Voltage" and "VH-Voltage after Boosting" is less than 5 V.

      • Difference between "VL-Voltage before Boosting" and "VH-Voltage after Boosting" is more than 30 V.

      		 B

      Both of the following are satisfied:


      • Difference between "VH-Voltage after Boosting" and "VL-Voltage before Boosting" is less than 5 V.

      • Difference between "Hybrid Battery Voltage" and "VH-Voltage after Boosting" is more than 15 V.

      		 C

    7. Turn the power switch off.


    B

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

    C

    REPLACE BATTERY VOLTAGE SENSOR Click here

    A

  6. CHECK FREEZE FRAME DATA (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. Read the freeze frame data of DTC P1C2D62.


      Powertrain > Hybrid Control > Trouble Codes
      Result
      Result Proceed to
      Both of the following are satisfied or both of the following are not satisfied. A
      "VL-Voltage before Boosting" is less than 168 V or more than 280 V. B
      "Hybrid Battery Voltage" is less than 168 V or more than 280 V. C

    5. Turn the power switch off.


    B

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

    C

    REPLACE BATTERY VOLTAGE SENSOR Click here

    A

  7. CHECK FREEZE FRAME DATA (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. Read the freeze frame data of DTC P1C2D62.


      Powertrain > Hybrid Control > Trouble Codes

      Tech Tips

      In the freeze frame data, read the item "Hybrid Battery Voltage" and all of the "Hybrid Battery Block 1 to 9 Voltage".

      Result
      Result Proceed to
      Freeze frame data is not stored. A

      Both of the following are satisfied:


      • Sum of all "Hybrid Battery Block 1 to 9 Voltage" is more than ("Hybrid Battery Voltage" -40 V)

      • Sum of all "Hybrid Battery Block 1 to 9 Voltage" is less than ("Hybrid Battery Voltage" +25 V)

      		 B
      Neither A nor B is satisfied. C

    5. Turn the power switch off.


    B

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

    C

    REPLACE BATTERY VOLTAGE SENSOR Click here

    A

  8. READ VALUE USING GTS (DATA LIST)


    1. Apply the parking brake and secure the wheels using chocks.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (READY).

    4. Enter the following menus: Powertrain / Hybrid Control / Data List.

    5. If the value of "Hybrid Battery SOC" is less than 55%, shift lever in D and charge the HV battery by depressing the accelerator pedal and brake pedal simultaneously until the value reaches 55% or more. *4


      Powertrain > Hybrid Control > Data List
      Tester Display
      Hybrid Battery SOC

    6. Release the accelerator pedal, move the shift lever to P and wait for the engine to stop. Read the Data List when the engine stops.

      Tech Tips

      If the engine starts, wait until it stops before continuing.


      Powertrain > Hybrid Control > Data List
      Tester Display
      Hybrid Battery Voltage
      Hybrid Battery Block 1 Voltage
      Hybrid Battery Block 2 Voltage
      Hybrid Battery Block 3 Voltage
      Hybrid Battery Block 4 Voltage
      Hybrid Battery Block 5 Voltage
      Hybrid Battery Block 6 Voltage
      Hybrid Battery Block 7 Voltage
      Hybrid Battery Block 8 Voltage
      Hybrid Battery Block 9 Voltage
      Result
      Result Proceed to

      Both of the following are satisfied:


      • Sum of all "Hybrid Battery Block 1 to 9 Voltage" is more than ("Power Resource VB" -40 V)

      • Sum of all "Hybrid Battery Block 1 to 9 Voltage" is less than ("Power Resource VB" +25 V)

      		 A
      The preceding condition is not satisfied. B

    7. Turn the power switch off.


    A

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

    B

    REPLACE BATTERY VOLTAGE SENSOR Click here