SFI SYSTEM (w/ EGR System), Diagnostic DTC:P0201, P0202, P0203, P0204, 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)
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, which 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 direct injection method, the injector driver (EDU) in the engine room operates the fuel injector assemblies (for direction injection) at high speed. 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 injector assemblies (for direction injection).

DTC No. DTC Detection Condition Trouble Area
P0201

Either of following condition is detected (1 trip detection logic):


  • INJ1 signal (#1) is not input for 20 consecutive revolutions

  • INJ1 signal (#4) is not input 20 times or more, and INJ1 signal (#1) is not input 15 times or more

  • Open or short in injector driver (EDU) circuit

  • Injector driver (EDU)

  • No. 1 integration relay

  • Fuel injector assembly (for direct injection)

  • ECM
P0202

Either of following condition is detected (1 trip detection logic):


  • INJ2 signal (#2) is not input for 20 consecutive revolutions

  • INJ2 signal (#3) is not input 20 times or more, and INJ2 signal (#2) is not input 15 times or more
P0203

Either of following condition is detected (1 trip detection logic):


  • INJ3 signal (#3) is not input for 20 consecutive revolutions

  • INJ3 signal (#2) is not input 20 times or more, and INJ2 signal (#3) is not input 15 times or more
P0204

Either of following condition is detected (1 trip detection logic):


  • INJ1 signal (#4) is not input for 20 consecutive revolutions

  • INJ1 signal (#1) is not input 20 times or more, and INJ1 signal (#4) is not input 15 times or more
P062D INJ1 or INJ2 signal is not input 60 times or more (1 trip detection logic)

MONITOR DESCRIPTION

The fuel injection sequence occurs in numerical order from No. 1 to No. 4.

The ECM monitors the EDU at all times. If drivers or fuel injector assemblies are malfunctioning, the EDU sends fuel injector assembly operation condition signals (fail signals INJ1 and INJ2) to the ECM. When the ECM receives the signals, the ECM stops the fuel injection control of the appropriate cylinders, cuts voltage to the appropriate injector (INJ) relay, and illuminates the MIL.

Definition of the Injector Driver Signal Cylinder Group
Injector Driver Signal (INJ1)

#1 (No. 1 Fuel injector assembly)

#4 (No. 4 Fuel injector assembly)
Injector Driver Signal (INJ2)

#2 (No. 2 Fuel injector assembly)

#3 (No. 3 Fuel injector assembly)

MONITOR STRATEGY

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).

  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 and warm it up.

  8. Idle the engine for 15 seconds or more.

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

  10. Read the 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 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 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 the Confirmation Driving Pattern and check the DTC judgment result again.

WIRING DIAGRAM

A01FPYYE02
A01FRZHE01

INSPECTION PROCEDURE

Note

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

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
      3 or more of the following DTCs are output: P062D, P0201, P202, P203 and P0204 B
      Either of the following pairs of DTCs is output: P0201 and P0204, or P0202 and P0203 C

    B

    INSPECT NO.1 INTEGRATION RELAY (INJ) Click here

    C

    CHECK HARNESS AND CONNECTOR (ECM - INJECTOR DRIVER (EDU)) Click here

    A

  2. CHECK HARNESS AND CONNECTOR


    1. Disconnect the injector driver (EDU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J3-2 (IJ1+) - J3-7 (IJ1-) 20°C (68°F) 1.76 to 2.06 Ω
      J3-3 (IJ2+) - J3-8 (IJ2-) 20°C (68°F) 1.76 to 2.06 Ω
      J3-4 (IJ3+) - J3-9 (IJ3-) 20°C (68°F) 1.76 to 2.06 Ω
      J3-5 (IJ4+) - J3-10 (IJ4-) 20°C (68°F) 1.76 to 2.06 Ω
      J3-2 (IJ1+) - Body ground Always 1 MΩ or higher
      J3-3 (IJ2+) - Body ground Always 1 MΩ or higher
      J3-4 (IJ3+) - Body ground Always 1 MΩ or higher
      J3-5 (IJ4+) - Body ground Always 1 MΩ or higher

      Tech Tips

      The standard values shown are fuel injector assembly resistance values.


    NG

    INSPECT FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION (RESISTANCE)) Click here

    OK

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


    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
      F70-85 (#1) - F79-4 (#10) Always Below 1 Ω
      F70-86 (#2) - F79-3 (#20) Always Below 1 Ω
      F70-87 (#3) - F79-2 (#30) Always Below 1 Ω
      F70-88 (#4) - F79-1 (#40) Always Below 1 Ω
      F70-85 (#1) or F79-4 (#10) - Body ground Always 10 kΩ or higher
      F70-86 (#2) or F79-3 (#20) - Body ground Always 10 kΩ or higher
      F70-87 (#3) or F79-2 (#30) - Body ground Always 10 kΩ or higher
      F70-88 (#4) or F79-1 (#40) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK ECM (#10 TO #40 VOLTAGE)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.

      Tech Tips

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

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

    6. Disconnect the F79 injector driver (EDU) connector.

    7. A01FTZTE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Injector Driver (EDU))

      Inspect the ECM using an oscilloscope.


      1. While cranking the engine, check waveform the terminals of the injector driver (EDU) connector.

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

        F79-4 (#10) - Body ground

        F79-3 (#20) - Body ground

        F79-2 (#30) - Body ground

        F79-1 (#40) - Body ground
        Tester Range 2 V/DIV., 20 ms./DIV.
        Condition Cranking

    NG

    REPLACE ECM Click here

    OK

    REPLACE INJECTOR DRIVER (EDU) Click here

  5. INSPECT FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION (RESISTANCE))


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

      Tech Tips

      Perform "Inspection After Repair" after replacing the fuel injector assembly (for direct injection) Click here.


    NG

    REPLACE FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION) Click here

    OK

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

  6. INSPECT NO.1 INTEGRATION RELAY (INJ)


    1. Inspect the No. 1 Integration relay (INJ) Click here.


    NG

    REPLACE NO.1 INTEGRATION RELAY

    OK

  7. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - NO. 1 INTEGRATION RELAY)


    1. Remove the No. 1 Integration relay from the No. 1 engine room relay block assembly.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      1D-1 - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - INJECTOR DRIVER (EDU))


    1. Remove the No. 1 Integration relay from the No. 1 engine room relay block assembly.

    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
      1F-11 - F80-2 (+B) Always Below 1 Ω
      1F-11 or F80-2 (+B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK HARNESS AND CONNECTOR (INJ RELAY - ECM)


    1. Disconnect the ECM connector.

    2. Remove the No. 1 Integration relay from the No. 1 engine room relay block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1E-19 - A79-8 (IREL) Always Below 1 Ω
      1E-19 or A79-8 (IREL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ECM Click here

  10. CHECK HARNESS AND CONNECTOR (ECM - INJECTOR DRIVER (EDU))


    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
      F70-116 (INJ1) - F79-6 (INJF) Always Below 1 Ω
      F70-117 (INJ2) - F79-5 (INJ2) Always Below 1 Ω
      F70-116 (INJ1) or F79-6 (INJF) - Body ground Always 10 kΩ or higher
      F70-117 (INJ2) or F79-5 (INJ2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT ECM (OUTPUT VOLTAGE)


    1. A01FTGCE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Injector Driver (EDU))

      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
      F79-6 (INJF) - Body ground Power switch on (IG) 4.5 to 5.5 V
      F79-5 (INJ2) - Body ground Power switch on (IG) 4.5 to 5.5 V

    NG

    REPLACE ECM Click here

    OK

    REPLACE INJECTOR DRIVER (EDU) Click here