ECD SYSTEM, Diagnostic DTC:14

DTC Code DTC Name
14 Timing Control System Malfunction

DESCRIPTION

The ECM controls the injection timing by actuating the timing control valve. The timing control valve is mounted on the injection pump and delay one by dutys control of pump internal fuel pressure.

The ECM detects the injection advance angle by TDC and NE signals.

DTC No. DTC Detection Condition Trouble Area
14 During and after engine warm up, actual injection timing is different from target value of ECM calculated for several sec.

  • Open or short in timing control valve circuit

  • Timing control valve

  • Fuel filter (Clogging)

  • Fuel (Freezing, Air in)

  • Injection pump (Internal pressure and timing control valve)

  • ECM

WIRING DIAGRAM

A01BC3GE01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT TIMING CONTROL VALVE


    1. A01BGSEE01

      Disconnect the timer control valve connector.

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

      Standard resistance
      Tester Connection Specified Condition
      1 - 2 10 to 14 Ω (20°C (68°F))

    NG

    REPLACE TIMING CONTROL VALVE

    OK

  2. INSPECT ECM (CHECK VOLTAGE)


    1. A01BBWZE01

      Disconnect the ECM D2 connector.

    2. Turn the ignition switch ON.

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

      Standard voltage
      Tester Connection Specified Condition
      TCV (D2-11) - Body ground 9 to 14 V

    NG

    INSPECT TIMING CONTROL VALVE (POWER SOURCE) Click here

    OK

  3. INSPECT ECM


    1. A01BEGVE01

      Turn the ignition switch ON.

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

      Standard voltage
      Tester Connection Specified Condition
      TCV (D2-11) - E1 (D2-14) 9 to 14 V

    3. While idling, measure the waveform according to the value( s) in the table below.

      OK
      Tester Connection Specified Condition
      TCV (D2-11) - E1 (D2-14) Correct waveform shown

    NG

    REPLACE ECM

    OK

  4. CHECK FUEL FILTER ASSEMBLY


    NG

    REPLACE FUEL FILTER ASSEMBLY

    OK

  5. CHECK FUEL LEAK


    1. Visually check the injection pump, each injector and fuel line for fuel leaks.

      OK
      No leakage

    NG

    REPAIR OR REPLACE FUEL LEAK

    OK

    CHECK AND REPLACE INJECTION PUMP ASSEMBLY

  6. INSPECT TIMING CONTROL VALVE (POWER SOURCE)


    1. A01BG5KE01

      Disconnect the timing control valve connector.

    2. Turn the ignition switch ON.

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

      Standard voltage
      Tester Connection Specified Condition
      B (D61-1) - Body ground 9 to 14 V

    NG

    CHECK HARNESS AND CONNECTOR (ECM - MAIN RELAY) Click here

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TIMING CONTROL VALVE - ECM)

  7. CHECK HARNESS AND CONNECTOR (ECM - MAIN RELAY)


    1. A01BFTXE01

      Disconnect the timing control valve connector.

    2. Disconnect the ECM D2 connector.

    3. Disconnect the integration relay 1J connector.

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

      Standard resistance (Check for open)
      Tester Connection Specified Condition
      B (D61-1) - (1J-4) Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Specified Condition
      TCV (D2-11) - Body ground 10 kΩ or higher
      B (D61-1) - Body ground 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    CHECK FOR ECM POWER SOURCE CIRCUIT