P2118

P2118 Throttle Control Motor

Component Description

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

The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feedback to the ECM to control the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

On Board Diagnosis Logic

This self-diagnosis has the one trip detection logic.





FAIL-SAFE MODE

When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.






DTC Confirmation Procedure

NOTE:

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

with SDT

1) Turn ignition switch ON and wait at least 2 seconds.
2) Start engine and let it idle for 5 seconds.
3) Check DTC.
4) If DTC is detected, go to "Diagnosis Procedure".

with GST

Follow the procedure "WITH SDT" above.

Diagnosis Procedure

1. CHECK GROUND CONNECTIONS

1 Turn ignition switch OFF.
2 Loosen and retighten two ground screws on the body. Refer to [Power Supply and Ground Circuit Check] Power Supply and Ground Circuit Check.






OK or NG
OK
GO TO 2.
NG
Repair or replace ground connections.

2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT

1 Disconnect electric throttle control actuator harness connector.





2 Disconnect ECM harness connector.
3 Check harness continuity between the following terminals.
Refer to Wiring Diagram.






4 Also check harness for short to ground and short to power.

OK or NG
OK
GO TO 3.
NG
Repair or replace.

3. CHECK THROTTLE CONTROL MOTOR

Refer to "Component Inspection".

OK or NG
OK
GO TO 4.
NG
GO TO 5.

4. CHECK INTERMITTENT INCIDENT

Refer to [Service Information for Electrical Incident: Intermittent Incident] Service Information for Electrical Incident: Intermittent Incident.

OK or NG
OK
GO TO 5.
NG
Repair or replace harness or connectors.

5. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1 Replace the electric throttle control actuator. Refer to [Intake Manifold: Exploded View] Intake Manifold Exploded View.
2 Perform [Throttle Valve Closed Position Learning] Throttle Valve Closed Position Learning.
3 Perform [Idle Air Volume Learning] Idle Air Volume Learning.


INSPECTION END

Component Inspection

Throttle Control Motor

1) Disconnect electric throttle control actuator harness connector.
2) Check resistance between terminals 5 and 6.











3) If NG, replace electric throttle control actuator and go to next step.
4) Perform [Throttle Valve Closed Position Learning] Throttle Valve Closed Position Learning.
5) Perform [Idle Air Volume Learning] Idle Air Volume Learning.