DTC    15 (4)    Throttle Motor Circuit Malfunction

для подготовки Нажмите здесь


DESCRIPTION

The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The fully open position of the throttle valve is detected by the throttle open switch mounted on the venturi.
If this DTC is stored, the ECM shuts down the power for the throttle control motor.

DTC No.
DTC Detection Condition
Trouble Area
15 (4)
Open or short in the throttle control motor circuit.
  1. Open or short in throttle control motor circuit
  2. Throttle control motor
  3. Throttle valve
  4. Open or short in throttle open switch circuit
  5. Throttle open switch
  6. ECM
Open or short in the throttle open switch circuit.

WIRING DIAGRAM


A0099CME04


INSPECTION PROCEDURE

УКАЗАНИЕ:
Read freeze frame data using the intelligent tester. 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.

1.INSPECT DIESEL THROTTLE BODY (THROTTLE OPEN SWITCH)

  1. Inspect the throttle open switch (See page Нажмите здесь).



NG
REPLACE DIESEL THROTTLE BODY (Нажмите здесь)
OK


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

  1. Disconnect the throttle open switch connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    C110-1 - Body ground
    		Always
    		Below 1 Ω
    C102-15 (THOP) - C110-2
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    C102-15 (THOP) or C110-2 - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the throttle open switch connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK ECM (THROTTLE CONTROL MOTOR CIRCUIT)


    A0099IRE08

  1. During engine racing, check the waveforms according to the value(s) in the table below.

    OK:
    Tester Connection
    		Condition
    		Specified Condition
    C101-10 (LU+A) - C101-13 (E01)
    		Engine racing
    		Correct waveform is as shown
    C101-9 (LU-A) - C101-13 (E01)
    		Engine racing
    		Correct waveform is as shown
    C101-8 (LU+B) - C101-13 (E01)
    		Engine racing
    		Correct waveform is as shown
    C101-7 (LU-B) - C101-13 (E01)
    		Engine racing
    		Correct waveform is as shown

    Text in Illustration 
    *a
    		Component with harness connected
    (ECM)
    *b
    		Signal waveforms



NG
Перейдите к шагу 4
OK

REPLACE ECM (Нажмите здесь)  

4.INSPECT DIESEL THROTTLE BODY (THROTTLE CONTROL MOTOR)

  1. Inspect the throttle control motor (See page Нажмите здесь).



NG
REPLACE DIESEL THROTTLE BODY (Нажмите здесь)
OK


5.CHECK HARNESS AND CONNECTOR (THROTTLE CONTROL MOTOR - ECM)

  1. Disconnect the throttle control motor connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    C105-6 - C101-10 (LU+A)
    		Always
    		Below 1 Ω
    C105-4 - C101-9 (LU-A)
    		Always
    		Below 1 Ω
    C105-3 - C101-8 (LU+B)
    		Always
    		Below 1 Ω
    C105-1 - C101-7 (LU-B)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    C105-6 or C101-10 (LU+A) - Body ground
    		Always
    		10 kΩ or higher
    C105-4 or C101-9 (LU-A) - Body ground
    		Always
    		10 kΩ or higher
    C105-3 or C101-8 (LU+B) - Body ground
    		Always
    		10 kΩ or higher
    C105-1 or C101-7 (LU-B) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the throttle control motor connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

CHECK ECM POWER SOURCE CIRCUIT (Нажмите здесь)