ELECTRONIC SHIFT LEVER SYSTEM, Diagnostic DTC:U010387

DTC Code DTC Name
U010387 Lost Communication with Gear Shift Control Module "A" (Hybrid/EV Battery Local Bus) Missing Message

DESCRIPTION

The shift control ECU transmits and receives signals via CAN communication to and from the hybrid vehicle control ECU.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
U010387 Lost Communication with Gear Shift Control Module "A" (Hybrid/EV Battery Local Bus) Missing Message

3 seconds elapse after turning power switch on (IG) with battery voltage 10 V or higher and a CAN communication malfunction (battery local bus) between hybrid vehicle control ECU occurs continuously for 1 second or more.

(1 trip detection logic)

  • Hybrid vehicle control ECU

  • Shift control ECU

  • Wire harness or connector

  • Master Warning Light


    • Comes on

  • Multi-information Display Error Message


    • Displayed

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 All Readiness check procedure.

Click here


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

WIRING DIAGRAM

B004B9GE02

CAUTION / NOTICE / HINT

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

  • The vehicle is equipped with a sub-battery. Therefore, ensure there is no power being supplied to the vehicle when disconnecting or reconnecting the connector of the shift control ECU and when removing or installing the shift control ECU.

    Click here

PROCEDURE


  1. CHECK DTC OUTPUT (HEALTH CHECK)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Health Check.

    4. Check for DTCs.

      Result
      Result Proceed to
      DTC P176D12 does not output. A
      DTC P176D12 is output. B

    5. Turn the power switch off.


    B

    GO TO DTC CHART (P176D12) Click here

    A

  2. CHECK CONNECTOR CONNECTION CONDITION (SHIFT CONTROL ECU CONNECTOR)


    1. Check the connector connections and contact pressure of the relevant terminals for the shift control ECU connectors.

      Click here

      B004B3BC01
      *A for RHD *B for LHD
      OK
      The connectors are connected securely and there are no contact pressure problems.
      Result
      Proceed to
      OK
      NG

    NG

    CONNECT SECURELY

    OK

  3. CHECK HARNESS AND CONNECTOR (SHIFT CONTROL ECU - HYBRID VEHICLE CONTROL ECU)


    1. Disconnect the P74 shift control ECU connector.

    2. Disconnect the z31 battery ECU assembly connector.

    3. Disconnect the P64 hybrid vehicle control ECU connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      P74-6(CA2H) - P64-34(CA4H) Power switch off Below 1 Ω
      P74-5(CA2L) - P64-35(CA4L) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      P74-6(CA2H) or P64-34(CA4H) - Body ground and other terminals (except z31-16(CA1H)) Power switch off 10 kΩ or higher
      P74-5(CA2L) or P64-35(CA4L) - Body ground and other terminals (except z31-15(CA1L)) Power switch off 10 kΩ or higher

    5. Reconnect the P64 hybrid vehicle control ECU connector.

    6. Reconnect the z31 battery ECU assembly connector.

    7. Reconnect the P74 shift control ECU connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HYBRID VEHICLE CONTROL ECU


    1. Check that the voltage between the terminals of the sub-battery module assembly is 0 V.

      Click here

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

    3. B004CU0C15
      *a

      Front view of wire harness connector

      (to Shift Control ECU)

      Disconnect the shift control ECU connector.

    4. Disconnect the z31 battery ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P74-6(CA2H) - P74-5(CA2L) 20°C (68°F) 108 to 132 kΩ

    6. Reconnect the z31 battery ECU assembly connector.

    7. Reconnect the shift control ECU connector.

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

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    OK

  5. CHECK BATTERY ECU ASSEMBLY


    1. Check that the voltage between the terminals of the sub-battery module assembly is 0 V.

      Click here

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

    3. B004CU0C15
      *a

      Front view of wire harness connector

      (to Shift Control ECU)

      Disconnect the shift control ECU connector.

    4. Disconnect the P64 hybrid vehicle control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P74-6(CA2H) - P74-5(CA2L) 20°C (68°F) 108 to 132 kΩ

    6. Reconnect the P64 hybrid vehicle control ECU connector.

    7. Reconnect the shift control ECU connector.

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

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE SHIFT CONTROL ECU Click here

    NG

    REPLACE BATTERY ECU ASSEMBLY Click here