SFI SYSTEM, Diagnostic DTC:P0201, P0202, P0203, P0204, P0205, P0206, P062D

DTC Code DTC Name
P0201 Injector Circuit / Open - (Cylinder 1)
P0202 Injector Circuit / Open - (Cylinder 2)
P0203 Injector Circuit / Open - (Cylinder 3)
P0204 Injector Circuit / Open - (Cylinder 4)
P0205 Injector Circuit / Open - (Cylinder 5)
P0206 Injector Circuit / Open - (Cylinder 6)
P062D No. 1 Fuel Injector Driver Circuit Performance

DESCRIPTION

The D-4S system has two fuel injection methods. One is the in-cylinder direct injection method that directly injects pressurized fuel into the combustion chamber. The other is the intake port injection method. The ECM determines which fuel injection method to use in accordance with the engine conditions. For the in-cylinder direction injection method, the injector driver (EDU) in the engine room operates the fuel injectors (for direction injection) at high speeds. The EDU receives fuel injection request signals from the ECM and converts the signals to high voltage / high current injector operation signals to operate the fuel injectors (for direction injection).

The fuel injection sequence occurs in numerical order from No. 1 to No. 6.

The ECM monitors the EDU at all times. If drivers or fuel injectors are malfunctioning, the EDU sends fuel injector operation condition signals (fail signals INJ1 to INJ3) to the ECM. When the ECM receives the signals, the ECM stops the fuel injection control of the appropriate cylinders and illuminates the MIL.

DTC No. DTC Detection Condition Trouble Area
P0201 INJ1 signal (#1) is not input for 20 consecutive revolutions

  • Open or short in injector driver (EDU) circuit

  • Injector driver (EDU)

  • Fuel injector for direct injection

  • No. 1 integration relay

  • ECM
P0202 INJ2 signal (#2) is not input for 20 consecutive revolutions
P0203 INJ3 signal (#3) is not input for 20 consecutive revolutions
P0204 INJ1 signal (#4) is not input for 20 consecutive revolutions
P0205 INJ2 signal (#5) is not input for 20 consecutive revolutions
P0206 INJ3 signal (#6) is not input for 20 consecutive revolutions
P062D

INJ1, INJ2 or INJ3 signal is not input 60 times or more

(1 trip detection logic)

MONITOR STRATEGY

Required Sensors/Components Injector for direct injection, injector driver (EDU)
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) Click here.

  4. Turn the power switch off and wait for at least 30 seconds.

  5. Turn the power switch on (IG) and turn the GTS on.

  6. Put the engine in inspection mode (maintenance mode) Click here.

  7. Start the engine.

  8. Idle the engine for 15 seconds or more.

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

  10. Read Pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  12. Input the DTC: P0201, P0202, P0203, P0204, P0205, P0206 or P062D.

  13. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform steps and again.

WIRING DIAGRAM

B002BW0E13
B002BC8E02

CAUTION / NOTICE / HINT

Tech Tips


  • If the current from the INJ relay is cut because DTC P062D is stored, DTC P1235 will be stored even if the fuel pump for high pressure is normal.

  • Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    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 P0201, P0202, P0203, P0204, P0205 or P0206 is output A
      P062D or 4 or more of DTC P0201, P0202, P0203, P0204, P0205 and P0206 are output B
      One of the following pairs of DTCs is output: P0201 and P0204, P0202 and P0205, or P0203 and P0206 C
      DTC P062D is output C

    B

    INSPECT NO. 1 INTEGRATION RELAY Click here

    C

    CHECK HARNESS OR CONNECTOR (ECM - INJECTOR DRIVER) Click here

    A

  2. CHECK HARNESS AND CONNECTOR


    1. Disconnect the injector driver (EDU) connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K1-2 (IJ1+) - K1-5 (IJ1-) 20°C (68°F) 2.01 to 2.31 Ω
      L1-3 (IJ2+) - L1-6 (IJ2-) 20°C (68°F) 2.01 to 2.31 Ω
      K1-3 (IJ3+) - K1-6 (IJ3-) 20°C (68°F) 2.01 to 2.31 Ω
      L1-1 (IJ4+) - L1-4 (IJ4-) 20°C (68°F) 2.01 to 2.31 Ω
      K1-1 (IJ5+) - K1-4 (IJ5-) 20°C (68°F) 2.01 to 2.31 Ω
      L1-2 (IJ6+) - L1-5 (IJ6-) 20°C (68°F) 2.01 to 2.31 Ω
      K1-2 (IJ1+) or K1-5 (IJ1-) - Body ground 20°C (68°F) 1 MΩ or higher
      L1-3 (IJ2+) or L1-6 (IJ2-) - Body ground 20°C (68°F) 1 MΩ or higher
      K1-3 (IJ3+) or K1-6 (IJ3-) - Body ground 20°C (68°F) 1 MΩ or higher
      L1-1 (IJ4+) or L1-4 (IJ4-) - Body ground 20°C (68°F) 1 MΩ or higher
      K1-1 (IJ5+) or K1-4 (IJ5-) - Body ground 20°C (68°F) 1 MΩ or higher
      L1-2 (IJ6+) or L1-5 (IJ6-) - Body ground 20°C (68°F) 1 MΩ or higher

      Tech Tips

      The standard values shown are fuel injector assembly resistance values.

    3. Reconnect the injector driver (EDU) connectors.


    NG

    INSPECT FUEL INJECTOR FOR DIRECT INJECTION (RESISTANCE) Click here

    OK

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


    1. Disconnect the ECM connectors.

    2. Disconnect the injector driver (EDU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F5-13 (#1) - F36-3 (#10) Always Below 1 Ω
      F5-15 (#2) - F36-2 (#20) Always Below 1 Ω
      F5-45 (#3) - F36-1 (#30) Always Below 1 Ω
      F5-43 (#4) - F36-12 (#40) Always Below 1 Ω
      F5-75 (#5) - F36-11 (#50) Always Below 1 Ω
      F5-73 (#6) - F36-10 (#60) Always Below 1 Ω
      F5-13 (#1) or F36-3 (#10) - Body ground Always 10 kΩ or higher
      F5-15 (#2) or F36-2 (#20) - Body ground Always 10 kΩ or higher
      F5-45 (#3) or F36-1 (#30) - Body ground Always 10 kΩ or higher
      F5-43 (#4) or F36-12 (#40) - Body ground Always 10 kΩ or higher
      F5-75 (#5) or F36-11 (#50) - Body ground Always 10 kΩ or higher
      F5-73 (#6) or F36-10 (#60) - Body ground Always 10 kΩ or higher

    4. Reconnect the ECM connectors.

    5. Reconnect the injector driver (EDU) connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK ECM (#10, #20, #30, #40, #50 AND #60 VOLTAGE)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

      Tech Tips

      If DTC P062D is stored, the current from the INJ relay is cut.

    5. Turn the power switch off and wait for at least 30 seconds.

    6. Turn the power switch on (IG) and turn the GTS on.

    7. Put the engine in inspection mode (maintenance mode) Click here.

    8. Disconnect the injector driver (EDU) connector.

    9. B002B7PE01
      Text in Illustration
      *a

      Component with harness connected

      (to Injector driver)

      Inspect using an oscilloscope.


      1. While cranking the engine, check waveform the terminals of the EDU connector.

        Standard
        Signal waveform appears as shown in the illustration.
        ECM Terminal Name

        F36-3 (#10) - Body ground

        F36-2 (#20) - Body ground

        F36-1 (#30) - Body ground

        F36-12 (#40) - Body ground

        F36-11 (#50) - Body ground

        F36-10 (#60) - Body ground
        Tester Range 2 V/DIV., 20 ms./DIV.
        Condition Cranking

    OK

    REPLACE INJECTOR DRIVER Click here

    NG

    REPLACE ECM Click here

  5. INSPECT NO. 1 INTEGRATION RELAY


    1. B002BRAE01

      Remove the No. 1 integration relay from the No. 1 engine room relay block and junction block assembly.

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      1F-11 - Body ground Power switch on (IG) 11 to 14 V
      1F-5 - Body ground Power switch on (IG) 11 to 14 V
      Text in Illustration
      *a

      Component with harness connected

      (No. 1 integration relay)

    NG

    REPLACE NO. 1 INTEGRATION RELAY

    OK

  6. CHECK HARNESS OR CONNECTOR (ECM - INJECTOR DRIVER)


    1. Disconnect the ECM connector.

    2. Disconnect the injector driver (EDU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F5-14 (INJ1) - F36-6 (INJF) Always Below 1 Ω
      F5-44 (INJ2) - F36-5 (INJ2) Always Below 1 Ω
      F5-74 (INJ3) - F36-4 (INJ3) Always Below 1 Ω
      F5-14 (INJ1) or F36-6 (INJF) - Body ground Always 10 kΩ or higher
      F5-44 (INJ2) or F36-5 (INJ2) - Body ground Always 10 kΩ or higher
      F5-74 (INJ3) or F36-4 (INJ3) - Body ground Always 10 kΩ or higher

    4. Reconnect the injector driver (EDU) connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK TERMINAL VOLTAGE (ECM OUTPUT VOLTAGE)


    1. Disconnect the injector driver (EDU) connector.

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F36-6 (INJF) - Body ground Power switch on (IG) 4.5 to 5.5 V
      F36-5 (INJ2) - Body ground Power switch on (IG) 4.5 to 5.5 V
      F36-4 (INJ3) - Body ground Power switch on (IG) 4.5 to 5.5 V

    4. Reconnect the injector driver (EDU) connector.


    OK

    REPLACE INJECTOR DRIVER Click here

    NG

    REPLACE ECM Click here

  8. INSPECT FUEL INJECTOR FOR DIRECT INJECTION (RESISTANCE)


    1. Check the resistance of the fuel injector for direct injection Click here.

      Tech Tips

      Perform "Inspection After Repair" after replacing the fuel injector assembly Click here.


    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (INJECTOR DRIVER - FUEL INJECTOR FOR DIRECT INJECTION)

    NG

    REPLACE FUEL INJECTOR FOR DIRECT INJECTION Click here