Click here

СИСТЕМА ECD, Diagnostic DTC:P1222

Click here
Click here
DTC Code DTC Name
P1222 Throttle Motor Circuit Range/Performance
Click here

DESCRIPTION

Throttle control motor is operated by the ECM and opens and closes the throttle valve.

The fully open position of the throttle valve is detected by the throttle open switch which is mounted on the venturi assembly.

If this DTC is stored, the ECM shuts down the power for the throttle control motor.

DTC No. DTC Detection Condition Trouble Area
P1222 Open or short in throttle control motor circuit.

  • Open or short in throttle control motor circuit

  • Throttle control motor (Venturi assembly)

  • Intake restrictor valve

  • Open or short in throttle open switch circuit

  • Throttle open switch (Venturi assembly)

  • ECM
Open or short in throttle open switch circuit.
Click here

WIRING DIAGRAM

Click here

INSPECTION PROCEDURE

Note:

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

Tip:

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.

Click here

PROCEDURE


  1. Click here

    INSPECT THROTTLE OPEN SWITCH


    1. A003EWGE01

      Disconnect the throttle open switch connector.

    2. Remove the venturi assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Throttle valve is opened Below 1 Ω
      1 - 2 Throttle valve is closed 10 kΩ or higher
      Table 1. Text in Illustration
      *a

      Component without harness connected

      (Throttle Open Switch)
      Tip:

      The throttle open switch is integrated with the venturi assembly. If the throttle open switch is replaced, the venturi assembly must be replaced in whole.


  2. Click here

    CHECK HARNESS AND CONNECTOR (THROTTLE OPEN SWITCH - BODY GROUND, ECM - THROTTLE OPEN SWITCH)


    1. Disconnect the throttle open switch 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
      D63-2 - D100-57 (THOP) Always Below 1 Ω
      D63-1 - Body ground Always Below 1 Ω
      D63-2 or D100-57 (THOP) - Body ground Always 10 kΩ or higher

  3. Click here

    CHECK TERMINAL VOLTAGE (THROTTLE CONTROL MOTOR)


    1. A003GD9E54

      Disconnect the throttle control motor connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D58-2 (+B1) - Body ground Ignition switch ON 11 to 14 V
      D58-5 (+B2) - Body ground Ignition switch ON 11 to 14 V
      Table 2. Text in Illustration
      *a

      Front view of wire harness connector

      (to Throttle Control Motor)

  4. Click here

    INSPECT THROTTLE CONTROL MOTOR


    1. A003CK6E05

      Disconnect the throttle control motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (LU-B) - 2 (+B1) 20°C (68°F) 18 to 22 Ω
      2 (+B1) - 3 (LU+B) 20°C (68°F) 18 to 22 Ω
      4 (LU-A) - 5 (+B2) 20°C (68°F) 18 to 22 Ω
      5 (+B2) - 6 (LU+A) 20°C (68°F) 18 to 22 Ω
      Table 3. Text in Illustration
      *a

      Component without harness connected

      (Throttle Control Motor)
      Tip:

      The throttle control motor is integrated with the venturi assembly. If the throttle control motor is replaced, the venturi assembly must be replaced in whole.


  5. Click here

    CHECK HARNESS AND CONNECTOR (THROTTLE CONTROL MOTOR - ECM)


    1. Disconnect the throttle control motor 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
      D58-6 (LU+A) - D100-46 (LU+A) Always Below 1 Ω
      D58-4 (LU-A) - D100-85 (LU-A) Always Below 1 Ω
      D58-3 (LU+B) - D100-84 (LU+B) Always Below 1 Ω
      D58-1 (LU-B) - D100-43 (LU-B) Always Below 1 Ω
      D58-6 (LU+A) or D100-46 (LU+A) - Body ground Always 10 kΩ or higher
      D58-4 (LU-A) or D100-85 (LU-A) - Body ground Always 10 kΩ or higher
      D58-3 (LU+B) or D100-84 (LU+B) - Body ground Always 10 kΩ or higher
      D58-1 (LU-B) or D100-43 (LU-B) - Body ground Always 10 kΩ or higher

  6. Click here

    REPLACE VENTURI ASSEMBLY

  7. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (THROTTLE CONTROL MOTOR - NO. 1 INTEGRATION RELAY)

  9. Click here

    REPLACE VENTURI ASSEMBLY

  10. Click here

    REPLACE ECMClick here

  11. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR