SFI 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 set (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 set (for direction injection).

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0201 Injector Circuit / Open - (Cylinder 1) INJ1 signal (#1) is not input for 20 consecutive revolutions (1 trip detection logic)

  • Open or short in injector driver (EDU) circuit

  • Injector driver (EDU)

  • INJ relay

  • Fuel injector set (for direct injection)

  • ECM

 Comes on DTC stored
P0202 Injector Circuit / Open - (Cylinder 2) INJ2 signal (#2) is not input for 20 consecutive revolutions (1 trip detection logic)

  • Open or short in injector driver (EDU) circuit

  • Injector driver (EDU)

  • INJ relay

  • Fuel injector set (for direct injection)

  • ECM

 Comes on DTC stored
P0203 Injector Circuit / Open - (Cylinder 3) INJ2 signal (#3) is not input for 20 consecutive revolutions (1 trip detection logic)

  • Open or short in injector driver (EDU) circuit

  • Injector driver (EDU)

  • INJ relay

  • Fuel injector set (for direct injection)

  • ECM

 Comes on DTC stored
P0204 Injector Circuit / Open - (Cylinder 4) INJ1 signal (#4) is not input for 20 consecutive revolutions (1 trip detection logic)

  • Open or short in injector driver (EDU) circuit

  • Injector driver (EDU)

  • INJ relay

  • Fuel injector set (for direct injection)

  • ECM

 Comes on DTC stored
P062D No. 1 Fuel Injector Driver Circuit Performance INJ1 or INJ2 signal is not input 60 times or more (1 trip detection logic)

  • Open or short in injector driver (EDU) circuit

  • Injector driver (EDU)

  • INJ relay

  • Fuel injector set (for direct injection)

  • ECM

 Comes on DTC stored

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 set are malfunctioning, the EDU sends fuel injector set 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 set)

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

#2 (No. 2 Fuel injector set)

#3 (No. 3 Fuel injector set)

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

A01WYCPE09
A01WX9CE06

CAUTION / NOTICE / HINT

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.


      Powertrain > Engine and ECT > Trouble Codes
      Result
      Result Proceed to
      DTC P0201, P0202, P0203 or P0204 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 INJ RELAY Click here

    C

    CHECK HARNESS AND CONNECTOR (INJECTOR DRIVER (EDU) - ECM) 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
      J1-2 (IJ1+) - J1-7 (IJ1-) 20°C (68°F) 1.76 to 2.06 Ω
      J1-3 (IJ2+) - J1-8 (IJ2-) 20°C (68°F) 1.76 to 2.06 Ω
      J1-4 (IJ3+) - J1-9 (IJ3-) 20°C (68°F) 1.76 to 2.06 Ω
      J1-5 (IJ4+) - J1-10 (IJ4-) 20°C (68°F) 1.76 to 2.06 Ω
      J1-2 (IJ1+) - Body ground and other terminals Always 1 MΩ or higher
      J1-3 (IJ2+) - Body ground and other terminals Always 1 MΩ or higher
      J1-4 (IJ3+) - Body ground and other terminals Always 1 MΩ or higher
      J1-5 (IJ4+) - Body ground and other terminals Always 1 MΩ or higher

      Tech Tips

      The standard values shown are fuel injector set resistance values.

      Result
      Proceed to
      OK
      NG

    NG

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

    OK

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


    1. Disconnect the injector driver (EDU) connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F33-4 (#10) - F6-85 (#1) Always Below 1 Ω
      F33-3 (#20) - F6-86 (#2) Always Below 1 Ω
      F33-2 (#30) - F6-87 (#3) Always Below 1 Ω
      F33-1 (#40) - F6-88 (#4) Always Below 1 Ω
      F33-4 (#10) or F6-85 (#1) - Body ground and other terminals Always 10 kΩ or higher
      F33-3 (#20) or F6-86 (#2) - Body ground and other terminals Always 10 kΩ or higher
      F33-2 (#30) or F6-87 (#3) - Body ground and other terminals Always 10 kΩ or higher
      F33-1 (#40) or F6-88 (#4) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    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.


      Powertrain > Engine and ECT > Clear DTCs

      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. Disconnect the F33 injector driver (EDU) connector.

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

      Click here


      Powertrain > Hybrid Control > Utility
      Tester Display
      Inspection Mode
    8. A01WY41C06
      *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

        F33-4 (#10) - Body ground

        F33-3 (#20) - Body ground

        F33-2 (#30) - Body ground

        F33-1 (#40) - Body ground
        Tester Range 2 V/DIV., 20 ms./DIV.
        Condition Cranking
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE INJECTOR DRIVER (EDU) Click here

    NG

    REPLACE ECM Click here

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


    1. Check the resistance of the fuel injector set (for direct injection).

      Click here

      Tech Tips

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

      Click here

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE FUEL INJECTOR SET (FOR DIRECT INJECTION) Click here

  6. INSPECT INJ RELAY


    1. Inspect the INJ relay.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INJ RELAY

    OK

  7. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - INJ RELAY)


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

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      3 (INJ relay) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (INJ RELAY - INJECTOR DRIVER (EDU))


    1. Remove the INJ relay from the No. 1 engine room relay block and No. 1 junction 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
      5 (INJ relay) - F35-2 (+B) Always Below 1 Ω
      5 (INJ relay) or F35-2 (+B) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK HARNESS AND CONNECTOR (SEMICONDUCTOR PWR INTEGRATION ECU - INJ RELAY)


    1. Disconnect the semiconductor pwr integration ECU connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1G-1 - 1 (INJ relay) Always Below 1 Ω
      1G-1 or 1 (INJ relay) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (INJ relay) - A72-8 (IREL) Always Below 1 Ω
      2 (INJ relay) or A72-8 (IREL) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. Disconnect the injector driver (EDU) connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F33-6 (INJF) - F6-116 (INJ1) Always Below 1 Ω
      F33-5 (INJ2) - F6-117 (INJ2) Always Below 1 Ω
      F33-6 (INJF) or F6-116 (INJ1) - Body ground and other terminals Always 10 kΩ or higher
      F33-5 (INJ2) or F6-117 (INJ2) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. INSPECT ECM (OUTPUT VOLTAGE)


    1. Disconnect the injector driver (EDU) connector.

    2. A01WX6XC07
      *a

      Front view of wire harness connector

      (to Injector Driver (EDU))

      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
      F33-6 (INJF) - Body ground Power switch on (IG) 4.5 to 5.5 V
      F33-5 (INJ2) - Body ground Power switch on (IG) 4.5 to 5.5 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE INJECTOR DRIVER (EDU) Click here

    NG

    REPLACE ECM Click here