The Electronic Throttle Control(ETC) system is made of the components throttle body, Throttle Position Sensor(TPS)1&2 and Accelerator Position Sensor(APS) 1&2. The throttle body contains the actuator, the throttle plate and the throttle position sensor (potentiometer), which are integrated in one housing. The actuator consists of a DC motor with a two-stage gear. The opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the throttle body. And it provides feedback to the PCM to control the throttle motor in order to control the throttle valve opening angle properly in response to the driving condition.
PCM sets P2101 when detects error in ETC motor circuit.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Hardware error | 1. Open or Short in Control circuit 2. Poor connection or damaged harness 3. Faulty ETC Motor |
Enable Conditions |
•
Battery voltage > 9V | |
Threshold Value |
•
PCU power stage diagnosis | |
Diagnostic Time |
•
0.1 sec. | |
MIL On Condition |
•
0.1 sec. | |
Limp-Home |
•
Forced limited RPM mode : The PCM limits engine speed to 1500rpm
•
Electrical check of the ETC system is prohibited |
