ECD SYSTEM, Diagnostic DTC:P0262, P0265, P0268, P0271

DTC Code DTC Name
P0262 Cylinder 1 Injector "A" Circuit High
P0265 Cylinder 2 Injector "A" Circuit High
P0268 Cylinder 3 Injector "A" Circuit High
P0271 Cylinder 4 Injector "A" Circuit High

DESCRIPTION

The injector assemblies are installed in the cylinder head and inject fuel into the cylinders based on the signals from the ECM.

Tech Tips


  • Injector driver is built into the ECM.

  • For more information on the injector assembly and fuel injection control, refer to System Description Click here.

DTC No. DTC Detection Condition Trouble Area
P0262

Short circuit of the power stage low-side (cylinder No. 1)

(3 trip detection logic)

  • Open or short in No. 1 injector assembly circuit

  • No. 1 Injector assembly

  • ECM
DTC No. DTC Detection Condition Trouble Area
P0265

Short circuit of the power stage low-side (cylinder No. 2)

(3 trip detection logic)

  • Open or short in No. 2 injector assembly circuit

  • No. 2 Injector assembly

  • ECM
DTC No. DTC Detection Condition Trouble Area
P0268

Short circuit of the power stage low-side (cylinder No. 3)

(3 trip detection logic)

  • Open or short in No. 3 injector assembly circuit

  • No. 3 Injector assembly

  • ECM
DTC No. DTC Detection Condition Trouble Area
P0271

Short circuit of the power stage low-side (cylinder No. 4)

(3 trip detection logic)

  • Open or short in No. 4 injector assembly circuit

  • No. 4 Injector assembly

  • ECM

Tech Tips


  • If DTC P0262, P0265, P0268 and/or P0271 is stored, the following symptoms may appear:


    • Engine stall

WIRING DIAGRAM

A01IQ32E01

INSPECTION PROCEDURE

Note

When replacing the ECM and/or injector assembly, the ECM needs Registration and Initialization Click here.

Tech Tips


  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing the new ECM, perform all of the initialization/registrations for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. INSPECT INJECTOR ASSEMBLY


    1. Disconnect the injector assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 0.3 to 0.7 Ω

    NG

    REPLACE INJECTOR ASSEMBLY OF MALFUNCTIONING CYLINDER Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (INJECTOR ASSEMBLY - ECM)


    1. Disconnect the injector assembly 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
      Y1-2 (#10) - C84-29 (IJ1+) Always Below 1 Ω
      Y1-1 (#1) - C84-59 (IJ1-) Always Below 1 Ω
      Y2-2 (#20) - C84-28 (IJ2+) Always Below 1 Ω
      Y2-1 (#2) - C84-58 (IJ2-) Always Below 1 Ω
      Y3-2 (#30) - C84-27 (IJ3+) Always Below 1 Ω
      Y3-1 (#3) - C84-57 (IJ3-) Always Below 1 Ω
      Y4-2 (#40) - C84-26 (IJ4+) Always Below 1 Ω
      Y4-1 (#4) - C84-56 (IJ4-) Always Below 1 Ω
      Y1-2 (#10) or C84-29 (IJ1+) - Body ground Always 10 kΩ or higher
      Y1-1 (#1) or C84-59 (IJ1-) - Body ground Always 10 kΩ or higher
      Y2-2 (#20) or C84-28 (IJ2+) - Body ground Always 10 kΩ or higher
      Y2-1 (#2) or C84-58 (IJ2-) - Body ground Always 10 kΩ or higher
      Y3-2 (#30) or C84-27 (IJ3+) - Body ground Always 10 kΩ or higher
      Y3-1 (#3) or C84-57 (IJ3-) - Body ground Always 10 kΩ or higher
      Y4-2 (#40) or C84-26 (IJ4+) - Body ground Always 10 kΩ or higher
      Y4-1 (#4) or C84-56 (IJ4-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  3. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  4. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  5. REPLACE INJECTOR ASSEMBLY OF MALFUNCTIONING CYLINDER


    1. Replace the injector assembly of malfunctioning cylinder Click here.


    NEXT

  6. PERFORM REGISTRATION


    1. Register the injector assembly compensation code Click here.


    NEXT

  7. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs Click here.

    4. Turn the ignition switch off and wait for 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

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

    8. Confirm that the DTC is not output again.


    NEXT

    END