СИСТЕМА ECD (для моделей с контроллером свечей накаливания), Diagnostic DTC:P052F, P0683

DTC Code DTC Name
P052F Glow Plug Control Module System Voltage
P0683 Glow Plug Control Module to PCM Communication Circuit

DESCRIPTION

The glow system consists of the glow plug controller, glow plug assemblies and ECM. The glow plug controller turns on the glow plug assembly of each cylinder according to the duty command signal from the ECM in order to maintain optimal engine temperatures. The glow plug assemblies can be controlled according to the engine coolant temperature at engine start by using duty signals. This helps induce ignition under low temperatures and prevent rough idle after starting the engine.

The glow plug assemblies are turned on during PM forced regeneration in order to prevent the engine speed from rising due to an increase in fuel injection volume used to increase the exhaust gas temperature. The glow plug controller contains a self-diagnosis function. When the glow plug controller detects an internal malfunction, it sends a signal indicating the malfunction to the ECM. When the ECM receives this signal, it illuminates the MIL and stores a DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P052F Glow Plug Control Module System Voltage The glow plug controller recognizes the battery voltage as being 18.4 V or higher 3 times or more when the glow plug assemblies are on (2 trip detection logic). Glow plug controller Comes on DTC stored
P0683 Glow Plug Control Module to PCM Communication Circuit When the glow plug assemblies are on, the ECM detects that there is no output from the glow plug control unit for 3 seconds even though the ECM outputs an SI signal ("ON" command signal) (2 trip detection logic).

  • Open circuit in GND wire

  • Open or short circuit in BATT wire

  • Open in SI wire

  • SI wire short circuit to ground or battery

  • Open in DI wire

  • DI wire short circuit to ground or battery

  • Low battery voltage

  • Glow plug controller

  • ECM

 Comes on DTC stored
DTC Detection Drive Pattern
DTC No. DTC Detection Drive Pattern
P052F Ignition switch ON
P0683

WIRING DIAGRAM

A01TA67E01
A01TAY4E01

CAUTION / NOTICE / HINT

Note


  • When replacing the ECM, perform ECM Initialization and Registration.

    Click here

  • Inspect the fuses of circuits related to this system before performing the following procedure.

Tech Tips


  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing a new ECM, perform all of the initialization and registration procedures for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • 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. CHECK DTC OUTPUT


    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 / Trouble Codes.

    4. Read the DTCs.


      Powertrain > Engine and ECT > Trouble Codes
      Result
      Result Proceed to
      DTC P0683 is output A
      DTC P052F is output B

    B

    REPLACE GLOW PLUG CONTROLLER Click here

    A

  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF GLOW PLUG CONTROLLER)

    A01TC2BC05
    *a

    Front view of wire harness connector

    (to Glow Plug Controller)

    1. Disconnect the glow plug controller connector.

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A167-4 (+B) - Body ground Ignition switch ON 11 to 14 V
      A167-4 (+B) - Body ground Ignition switch off Below 0.5 V
      Result
      Result Proceed to
      OK A
      NG (for sedan) B
      NG (for hatchback, wagon) C

    B

    CHECK HARNESS AND CONNECTOR (EFI-MAIN RELAY - GLOW PLUG CONTROLLER) Click here

    C

    CHECK HARNESS AND CONNECTOR (EFI-MAIN NO. 2 RELAY - GLOW PLUG CONTROLLER) Click here

    A

  3. CHECK HARNESS AND CONNECTOR (GLOW PLUG CONTROLLER - BODY GROUND)


    1. Disconnect the glow plug controller connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A167-1 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STEP 14 Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (GLOW PLUG CONTROLLER - ECM)


    1. Disconnect the glow plug controller connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A167-3 (SI) - A169-24 (GLDO) Always Below 1 Ω
      A167-5 (DI) - A169-35 (GLDI) Always Below 1 Ω
      A167-3 (SI) or A169-24 (GLDO) - Body ground and other terminals Always 10 kΩ or higher
      A167-5 (DI) or A169-35 (GLDI) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STEP 14 Click here

    OK

  5. REPLACE GLOW PLUG CONTROLLER


    1. Replace the glow plug controller.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  6. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs

    5. Turn the ignition switch off for 30 seconds or more.

    6. Turn the ignition switch to ON.

    7. Turn the GTS on.

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

    9. Confirm that the pending DTC is not output.


      Powertrain > Engine and ECT > Trouble Codes
      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    A

    END

    B

  7. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  8. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs

    5. Turn the ignition switch off for 30 seconds or more.

    6. Turn the ignition switch to ON.

    7. Turn the GTS on.

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

    9. Confirm that the pending DTC is not output.


      Powertrain > Engine and ECT > Trouble Codes
      Result
      Proceed to
      NEXT

    NEXT

    END

  9. CHECK HARNESS AND CONNECTOR (EFI-MAIN RELAY - GLOW PLUG CONTROLLER)


    1. Disconnect the glow plug controller connector.

    2. Remove the EFI-MAIN relay from the engine room relay block and junction block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (EFI-MAIN relay) - A167-4 (+B) Always Below 1 Ω
      3 (EFI-MAIN relay) or A167-4 (+B) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STEP 14 Click here

    OK

  10. CHECK CHARGING SYSTEM


    1. Check the charging system and perform repairs as necessary.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 16 Click here

  11. CHECK HARNESS AND CONNECTOR (EFI-MAIN NO. 2 RELAY - GLOW PLUG CONTROLLER)


    1. Disconnect the glow plug controller connector.

    2. Remove the EFI-MAIN NO. 2 relay from the engine room relay block and junction block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (EFI-MAIN NO. 2 relay) - A167-4 (+B) Always Below 1 Ω
      3 (EFI-MAIN NO. 2 relay) or A167-4 (+B) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  12. CHECK ECM POWER SOURCE CIRCUIT


    1. Check the ECM power source circuit and perform repairs as necessary.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  13. CHECK CHARGING SYSTEM


    1. Check the charging system and perform repairs as necessary.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 16 Click here

  14. REPAIR OR REPLACE HARNESS OR CONNECTOR

    Result
    Proceed to
    NEXT

    NEXT

    GO TO STEP 16 Click here

  15. REPLACE GLOW PLUG CONTROLLER


    1. Replace the glow plug controller.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  16. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs

    5. Turn the ignition switch off for 30 seconds or more.

    6. Turn the ignition switch to ON.

    7. Turn the GTS on.

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

    9. Confirm that the pending DTC is not output.


      Powertrain > Engine and ECT > Trouble Codes
      Result
      Proceed to
      NEXT

    NEXT

    END