ECD SYSTEM, Diagnostic DTC:P0380

DTC Code DTC Name
P0380 Glow Plug / Heater Circuit "A"

DESCRIPTION

When an electrical current signal command from the ECM is received, the glow plug controller assembly outputs an electrical current signal to the glow plug assembly for each cylinder.

A DTC is stored if the ECM determines that the internal mode is not correct based on the signal from the glow plug controller assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0380 Glow Plug / Heater Circuit "A"

Internal mode abnormal for 2 seconds.

(3 trip detection logic)

 Glow plug controller assembly Does not come on DTC stored

CAUTION / NOTICE / HINT

Tech Tips

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. OVERWRITE GLOW PLUG CONTROLLER ASSEMBLY INTERNAL MODE


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Enter the following menus: Powertrain / Engine and ECT / Utility / Glow Control Unit Inspection.


      Powertrain > Engine and ECT > Utility
      Tester Display
      Glow Control Unit Inspection
      Result
      Result Proceed to
      Switching GCU to operation status is complete. A
      Glow Control Unit Inspection has failed. B

    B

    REPLACE GLOW PLUG CONTROLLER ASSEMBLY Click here

    A

  2. CHECK WHETHER DTC OUTPUT RECURS (DTC P0380)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs

    4. Turn the ignition switch off and wait for 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.


      Powertrain > Engine and ECT > Trouble Codes

    8. Read the DTCs.

      Result
      Result Proceed to
      No DTC output A
      DTC P0380 B

    A

    END

    B

  3. REPLACE GLOW PLUG CONTROLLER ASSEMBLY


    1. Replace the glow plug controller assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs

    4. Turn the ignition switch off and wait for 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.


      Powertrain > Engine and ECT > Trouble Codes

    8. Confirm that the DTC is not output again.

      Result
      Proceed to
      NEXT

    NEXT

    END