ECD SYSTEM, Diagnostic DTC:P0200

DTC Code DTC Name
P0200 Injector Circuit / Open

DESCRIPTION

The injector driver assembly has been adopted to drive the injector assembly at high speeds. The injector driver assembly has realized high-speed driving under high fuel pressure conditions through the use of a voltage converter sub-assembly that provides a high-voltage, quick-charging system.

The ECM constantly monitors the injector driver assembly and stops the engine if an abnormal condition is detected.

DTC No. DTC Detection Condition Trouble Area
P0200 Open or short in injector driver assembly or injector assembly circuit. After engine is started, there is no injection confirmation signal (IJF) from injector driver assembly to ECM despite ECM sending injection command signal (IJT) to injector driver assembly

  • Open or short in injector driver assembly circuit

  • Injector assembly

  • Injector driver assembly

  • ECM

WIRING DIAGRAM

A01CIH2E01
A01CIUGE01

INSPECTION PROCEDURE

Tech Tips

Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not, as well as other data recorded at the time of a malfunction.

PROCEDURE


  1. CHECK INJECTOR DRIVER ASSEMBLY (+B VOLTAGE)


    1. A01CH1QE08
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Injector Driver Assembly)

      Disconnect the injector driver assembly connectors.

    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
      E26-8 (+B) - E27-1 (GND) Ignition switch ON 18 to 27 V

    4. Reconnect the injector driver assembly connectors.


    NG

    CHECK EDU POWER SOURCE CIRCUIT Click here

    OK

  2. CHECK INJECTOR DRIVER ASSEMBLY (INJECTOR ASSEMBLY RESISTANCE)


    1. A01CJG0E05
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Injector Driver Assembly)

      Disconnect the injector driver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E26-4 (INJ#1) - E26-5 (COM1) 20°C (68°F) 0.35 to 0.57 Ω
      E26-2 (INJ#2) - E26-6 (COM2) 20°C (68°F) 0.35 to 0.57 Ω
      E26-1 (INJ#3) - E26-6 (COM2) 20°C (68°F) 0.35 to 0.57 Ω
      E26-3 (INJ#4) - E26-5 (COM1) 20°C (68°F) 0.35 to 0.57 Ω

    3. Reconnect the injector driver assembly connector.


    NG

    INSPECT INJECTOR ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (INJECTOR DRIVER ASSEMBLY - ECM)


    1. Disconnect the injector driver assembly connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      E27-6 (IJT#1) - E22-24 (#1) Always Below 1 Ω
      E27-3 (IJT#2) - E22-23 (#2) Always Below 1 Ω
      E27-2 (IJT#3) - E22-22 (#3) Always Below 1 Ω
      E27-5 (IJT#4) - E22-21 (#4) Always Below 1 Ω
      E27-7 (IJF) - E22-25 (INJF) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      E27-6 (IJT#1) or E22-24 (#1) - Body ground Always 10 kΩ or higher
      E27-3 (IJT#2) or E22-23 (#2) - Body ground Always 10 kΩ or higher
      E27-2 (IJT#3) or E22-22 (#3) - Body ground Always 10 kΩ or higher
      E27-5 (IJT#4) or E22-21 (#4) - Body ground Always 10 kΩ or higher
      E27-7 (IJF) or E22-25 (INJF) - Body ground Always 10 kΩ or higher

    4. Reconnect the injector driver assembly connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (INJECTOR DRIVER ASSEMBLY - ECM)

    OK

  4. CHECK ECM (OUTPUT VOLTAGE)


    1. A01CJ17E08
      Text in Illustration
      *1

      Component with harness connected

      (ECM)
      *2 Signal Waveform
      *3 5 V/DIV.
      *4 20 ms./DIV.
      *5 2 V/DIV.
      *6 1 ms./DIV.

      While idling the engine, check the waveform of the ECM connectors using an oscilloscope.

      Standard
      Tester Connection Specified Condition
      E22-24 (#1) - E23-7 (E1) Correct waveform appears as shown
      E22-23 (#2) - E23-7 (E1) Correct waveform appears as shown
      E22-22 (#3) - E23-7 (E1) Correct waveform appears as shown
      E22-21 (#4) - E23-7 (E1) Correct waveform appears as shown
      E22-25 (INJF) - E23-7 (E1) Correct waveform appears as shown
      Result
      Result Proceed to
      #1 to #4 is normal, INJF is abnormal A
      #1 to #4 is abnormal, INJF is normal B

    B

    REPLACE ECM Click here

    A

    REPLACE INJECTOR DRIVER ASSEMBLY Click here

  5. INSPECT INJECTOR ASSEMBLY


    1. A01CHWBE26
      Text in Illustration
      *1

      Component without harness connected

      (Injector Assembly)

      Disconnect the injector assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 0.35 to 0.57 Ω

    3. Reconnect the injector assembly connectors.


    NG

    REPLACE INJECTOR ASSEMBLY Click here

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (INJECTOR DRIVER ASSEMBLY - INJECTOR ASSEMBLY)