ELECTRONIC SHIFT LEVER SYSTEM(for 8GR-FKS), Diagnostic DTC:U010387

DTC Code DTC Name
U010387 Lost Communication with Gear Shift Control Module "A" Missing Message

DESCRIPTION

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

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
U010387 Lost Communication with Gear Shift Control Module "A" Missing Message

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

(1 trip detection logic)

  • ECM

  • Shift control ECU

  • Wire harness or connector

 Does not come on

  • 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 engine switch on (IG) and wait for 2 minutes or more.

WIRING DIAGRAM

B006BHSE03
*a Shift Control ECU
*b CAN Communication Line

CAUTION / NOTICE / HINT

Note


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

      B006DWXC02
      *A for LHD *B for RHD
      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 - ECM)


    1. Disconnect the G81 shift control ECU connector.

    2. Disconnect the A56 ECM connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      G81-6(CA2H) - A56-12(CANP) Engine switch off Below 1 Ω
      G81-5(CA2L) - A56-25(CANN) Engine switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      G81-6(CA2H) or A56-12(CANP) - Body ground and other terminals Engine switch off 10 kΩ or higher
      G81-5(CA2L) or A56-25(CANN) - Body ground and other terminals Engine switch off 10 kΩ or higher

    4. Reconnect the A56 ECM connector.

    5. Reconnect the G81 shift control ECU connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK ECM


    1. B006B97

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

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

    3. Disconnect the G81 shift control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G81-6(CA2H) - G81-5(CA2L) 20°C (68°F) 108 to 132 kΩ

    5. Reconnect the G81 shift control ECU connector.

    6. Connect the cable to the negative (-) battery terminal.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE SHIFT CONTROL ECU Click here

    NG

    REPLACE ECM Click here