P2101
P2101 Electric Throttle Control FunctionDescription
NOTE: If DTC P2101 is displayed with DTC P2100 or 2119, first perform the trouble diagnosis for DTC P2100 or P2119. P2100 P2119
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.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.
P2101:
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MIL lights up.
Engine operating condition in fail-safe mode
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
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.
TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 11 V when engine is running.
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 [P2101 Electric Throttle Control Function].
WITH GST
Follow the procedure "WITH SDT" above.
Diagnosis Procedure
Step 1-2:
Step 3-5:
Step 6-8:
Step 9:
Step 10-13:
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.
4. Perform "Throttle Valve Closed Position Learning" [Procedure After Replacing ECM]. Programming and Relearning
5. Perform "Idle Air Volume Learning" [Procedure After Replacing ECM]. Programming and Relearning