ECD SYSTEM(w/ Glow Plug Controller), Diagnostic DTC:P0201,P0202,P0203,P0204 and P2148

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)
P2148 Exhaust Aftertreatment Fuel Injector Group "A" Supply Voltage 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.

Tip:

The injector driver is built into the ECM.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0201

Injector Circuit / Open - (Cylinder 1)

Open or short in injector circuit (cylinder No. 1) for 0.5 seconds or more

(1 trip detection logic)

  • Open or short in injector assembly circuit

  • Injector assembly

  • ECM

Comes on

DTC stored

P0202

Injector Circuit / Open - (Cylinder 2)

Open or short in injector circuit (cylinder No. 2) for 0.5 seconds or more

(1 trip detection logic)

  • Open or short in injector assembly circuit

  • Injector assembly

  • ECM

Comes on

DTC stored

P0203

Injector Circuit / Open - (Cylinder 3)

Open or short in injector circuit (cylinder No. 3) for 0.5 seconds or more

(1 trip detection logic)

  • Open or short in injector assembly circuit

  • Injector assembly

  • ECM

Comes on

DTC stored

P0204

Injector Circuit / Open - (Cylinder 4)

Open or short in injector circuit (cylinder No. 4) for 0.5 seconds or more

(1 trip detection logic)

  • Open or short in injector assembly circuit

  • Injector assembly

  • ECM

Comes on

DTC stored

P2148

Exhaust Aftertreatment Fuel Injector Group "A" Supply Voltage Circuit High

Short circuit in an injection bank is detected after all injector assemblies on the affected bank are actuated more than 12.

  • Open or short in injector assembly circuit

  • ECM

Comes on

DTC stored
Table 1. DTC Detection Drive Pattern

DTC No.

DTC Detection Drive Pattern

P0201

Engine idling for approximately 15 seconds

P0202

P0203

P0204

P2148
Tip:

  • If DTC P0201, P0202, P0203, P0204 and/or P2148 is stored, the following symptoms may appear:

    • Engine stall

WIRING DIAGRAM

A293484E05

CAUTION / NOTICE / HINT

Note:

When replacing the ECM and/or injector assembly, perform ECM Initialization and Registration.

Click here

Tip:

  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing a new ECM, perform all of the initialization and registration procedures 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

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE INJECTOR ASSEMBLY OF MALFUNCTIONING CYLINDERClick 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

      B113-1 (#10) - B212-27 (IJ1+)

      Always

      Below 1 Ω

      B113-2 (#1) - B212-57 (IJ1-)

      Always

      Below 1 Ω

      B114-1 (#20) - B212-26 (IJ2+)

      Always

      Below 1 Ω

      B114-2 (#2) - B212-56 (IJ2-)

      Always

      Below 1 Ω

      B115-1 (#30) - B212-25 (IJ3+)

      Always

      Below 1 Ω

      B115-2 (#3) - B212-55 (IJ3-)

      Always

      Below 1 Ω

      B116-1 (#40) - B212-24 (IJ4+)

      Always

      Below 1 Ω

      B116-2 (#4) - B212-54 (IJ4-)

      Always

      Below 1 Ω

      B113-1 (#10) or B212-27 (IJ1+) - Body ground and other terminals

      Always

      10 kΩ or higher

      B113-2 (#1) or B212-57 (IJ1-) - Body ground and other terminals

      Always

      10 kΩ or higher

      B114-1 (#20) or B212-26 (IJ2+) - Body ground and other terminals

      Always

      10 kΩ or higher

      B114-2 (#2) or B212-56 (IJ2-) - Body ground and other terminals

      Always

      10 kΩ or higher

      B115-1 (#30) or B212-25 (IJ3+) - Body ground and other terminals

      Always

      10 kΩ or higher

      B115-2 (#3) or B212-55 (IJ3-) - Body ground and other terminals

      Always

      10 kΩ or higher

      B116-1 (#40) or B212-24 (IJ4+) - Body ground and other terminals

      Always

      10 kΩ or higher

      B116-2 (#4) or B212-54 (IJ4-) - Body ground and other terminals

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

    OK

  3. REPLACE ECM

    1. Replace the ECM.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  4. REPAIR OR REPLACE HARNESS OR CONNECTOR

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  5. REPLACE INJECTOR ASSEMBLY OF MALFUNCTIONING CYLINDER

    1. Replace the injector assembly of the malfunctioning cylinder.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  6. PERFORM REGISTRATION AND INITIALIZATION

    1. Register the injector compensation codes.

      Click here

    2. Perform Pilot Quantity Learning Values Reset.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  7. BLEED AIR FROM FUEL SYSTEM

    1. Bleed the air from the fuel system.

      Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

  8. 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.

      Powertrain > Engine and ECT > Clear DTCs

    4. Start the engine.

    5. Allow the engine to idle for 15 seconds or more.

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

    7. Confirm that the DTC is not output again.

      Powertrain > Engine and ECT > Trouble Codes

    Result

    Proceed to

    NEXT
    NEXT

    END