MOTOR GENERATOR CONTROL SYSTEM, Diagnostic DTC:U010087, U029387, U117087

DTC Code DTC Name
U010087 Lost Communication With ECM/PCM "A" Missing Message
U029387 Lost Communication With Hybrid Powertrain Control Module Missing Message
U117087 Lost Communication With Brake System Control Module(ch2) Missing Message

DESCRIPTION

The motor generator control ECU communicates with the hybrid vehicle control ECU, ECM and skid control ECU assembly via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
U010087 Lost Communication With ECM/PCM "A" Missing Message

A CAN communication error between the ECM and motor generator control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

 CAN communication system Comes on

Master Warning Light:

Comes on
U029387 Lost Communication With Hybrid Powertrain Control Module Missing Message

A CAN communication error between the hybrid vehicle control ECU and motor generator control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

 CAN communication system Comes on

Master Warning Light:

Comes on
U117087 Lost Communication With Brake System Control Module(ch2) Missing Message

A CAN communication error between the skid control ECU assembly and motor generator control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

 CAN communication system Comes on

Master Warning Light:

Comes on

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. With power switch on (IG) and wait for 2 minutes or more.

  7. Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.

  8. 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 (MOTOR GENERATOR CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Check for DTCs.


      Powertrain > Motor Generator > Trouble Codes
      Result
      Result Proceed to
      None of the following DTCs are output. A
      Any of the following DTCs are also output. B
      DTC No. Relevant DTC
      P312487 Lost Communication between Drive Motor "A" and HV ECU Missing Message

      Tech Tips

      U010087, U029387 or U117087 may be stored due to a malfunction which also causes the DTCs in the preceding table to be stored. In this case, first troubleshoot the output DTCs in the preceding table. Then, perform a test to attempt to reproduce the problems, and check that no DTCs are output.

    5. Turn the power switch off.


    A

    GO TO CAN COMMUNICATION SYSTEM Click here

    B

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