ECD SYSTEM(w/ DPF), 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.

P052F
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON 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
P0683
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON 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 or short circuit in ground 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

WIRING DIAGRAM

A01VF2NE02

CAUTION / NOTICE / HINT

Note


  • When replacing the ECM, the ECM needs Registration and Initialization Click here.

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

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. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

    5. Read the DTCs.

      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)


    1. A01VJE9E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Glow Plug Controller)

      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 Switch Condition Specified Condition
      A106-4 (+B) - Body ground Ignition switch ON 11 to 14 V
      A106-4 (+B) - Body ground Ignition switch off Below 0.5 V

    NG

    CHECK HARNESS AND CONNECTOR (GLOW PLUG CONTROLLER - NO. 1 INTEGRATION RELAY) Click here

    OK

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


    1. Disconnect the A106 glow plug controller connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A106-1 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

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


    1. Disconnect the A106 glow plug controller connector.

    2. Disconnect the A108 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A106-3 (SI) - A108-24 (GLDO) Always Below 1 Ω
      A106-5 (DI) - A108-35 (GLDI) Always Below 1 Ω
      A106-3 (SI) or A108-24 (GLDO) - Body ground Always 10 kΩ or higher
      A106-5 (DI) or A108-35 (GLDI) - Body ground Always 10 kΩ or higher

    OK

    REPLACE GLOW PLUG CONTROLLER Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

  5. CHECK HARNESS AND CONNECTOR (GLOW PLUG CONTROLLER - NO. 1 INTEGRATION RELAY)


    1. Disconnect the A106 glow plug controller connector.

    2. Remove the No. 1 integration relay from the No. 1 engine room relay block.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A106-4 (+B) - 1D-11 Always Below 1 Ω
      A106-4 (+B) or 1D-11 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  6. CHECK CHARGING SYSTEM


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


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  7. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  8. REPLACE GLOW PLUG CONTROLLER


    1. Replace the glow plug controller Click here.


    NEXT

  9. 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 Click here.

    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.

    9. Confirm that the DTC is not output again.


    OK

    END

    NG

  10. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  11. 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 Click here.

    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.

    9. Confirm that the DTC is not output again.


    NEXT

    END

  12. REPLACE GLOW PLUG CONTROLLER


    1. Replace the glow plug controller Click here


    NEXT

  13. 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 Click here.

    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.

    9. Confirm that the DTC is not output again.


    NEXT

    END