P2118

DTC 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.
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 .


Wiring Diagram






Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT.

CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.







Diagnosis Procedure


1. CHECK GROUND CONNECTIONS

1.Turn ignition switch OFF.
2.Loosen and retighten engine screw on the body.
Power Supply And Ground Circuit.










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 (1) 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 open circuit or short to ground or short to power in harness or connectors.

3. CHECK THROTTLE CONTROL MOTOR

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

4. CHECK INTERMITTENT INCIDENT

Refer to Trouble Diagnosis For Intermittent Incident
OK or NG
OK- GO TO 5.
NG- Repair or replace harness or connectors.

5. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

Replace the electric throttle control actuator. Component.
-INSPECTION END


Component Inspection


THROTTLE CONTROL MOTOR

1.Disconnect electric throttle control actuator harness connector.





2.Check resistance between terminals 5 and 6.
Resistance: Approximately 1 - 15 Ohms [at 25 �C (77�F)]
3.If NG, replace electric throttle control actuator and go to next step. Component.