ECD SYSTEM, Diagnostic DTC:P3148, P3151, P3154, P3157

DTC Code DTC Name
P3148 Cylinder 1 High Pressure Injector High Side Circuit Shorted to Coil
P3151 Cylinder 2 High Pressure Injector High Side Circuit Shorted to Coil
P3154 Cylinder 3 High Pressure Injector High Side Circuit Shorted to Coil
P3157 Cylinder 4 High Pressure Injector High Side Circuit Shorted to Coil

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
P3148

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

(1 trip detection logic)

  • Open or short in No. 1 injector assembly circuit

  • No. 1 injector assembly

  • ECM
DTC No. DTC Detection Condition Trouble Area
P3151

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

(1 trip detection logic)

  • Open or short in No. 2 injector assembly circuit

  • No. 2 injector assembly

  • ECM
DTC No. DTC Detection Condition Trouble Area
P3154

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

(1 trip detection logic)

  • Open or short in No. 3 injector assembly circuit

  • No. 3 injector assembly

  • ECM
DTC No. DTC Detection Condition Trouble Area
P3157

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

(1 trip detection logic)

  • Open or short in No. 4 injector assembly circuit

  • No. 4 injector assembly

  • ECM

Tech Tips


  • If DTC P3148, P3151, P3154 and/or P3157 is stored, the following symptoms may appear:


    • Engine stall

WIRING DIAGRAM

A004N2RE03
*a No. 1 Injector Assembly
*b No. 2 Injector Assembly
*c No. 3 Injector Assembly
*d No. 4 Injector Assembly

CAUTION / NOTICE / HINT

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. Inspect the injector assembly Click here.


    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
      C1-2 (#10) - B91-29 (IJ1+) Always Below 1 Ω
      C1-1 (#1) - B91-59 (IJ1-) Always Below 1 Ω
      C2-2 (#20) - B91-28 (IJ2+) Always Below 1 Ω
      C2-1 (#2) - B91-58 (IJ2-) Always Below 1 Ω
      C3-2 (#30) - B91-27 (IJ3+) Always Below 1 Ω
      C3-1 (#3) - B91-57 (IJ3-) Always Below 1 Ω
      C4-2 (#40) - B91-26 (IJ4+) Always Below 1 Ω
      C4-1 (#4) - B91-56 (IJ4-) Always Below 1 Ω
      C1-2 (#10) or B91-29 (IJ1+) - Body ground Always 10 kΩ or higher
      C1-1 (#1) or B91-59 (IJ1-) - Body ground Always 10 kΩ or higher
      C2-2 (#20) or B91-28 (IJ2+) - Body ground Always 10 kΩ or higher
      C2-1 (#2) or B91-58 (IJ2-) - Body ground Always 10 kΩ or higher
      C3-2 (#30) or B91-27 (IJ3+) - Body ground Always 10 kΩ or higher
      C3-1 (#3) or B91-57 (IJ3-) - Body ground Always 10 kΩ or higher
      C4-2 (#40) or B91-26 (IJ4+) - Body ground Always 10 kΩ or higher
      C4-1 (#4) or B91-56 (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.

    2. Register the injector assembly compensation code Click here.


    NEXT

  6. 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: Powertrain / Engine and ECT / Trouble Codes.

    8. Confirm that the DTC is not output again.


    NEXT

    END