P1122
P1122 ELECTRIC THROTTLE CONTROL FUNCTION (CIRCUIT)Description
NOTE: If DTC P1122 is displayed with DTC P1121, first perform the trouble diagnosis for DTC P1121. Refer to "DTC P1121 ELECTRIC THROTTLE CONTROL ACTUATOR".
Electric Throttle Control Actuator consists of throttle control motor, acceleration pedal position sensor, 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 the 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
Malfunction is detected when
(Malfunction A) electric throttle control feedback function does not operate properly,
(Malfunction B) an excessively high ampere of current flows through throttle control motor to ECM.
Fail-Safe Mode:
Possible Cause
- Harness or connectors
(Throttle control motor circuit is open or shorted.)
- Electric throttle control actuator
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 CONSULT-II
1. Turn ignition switch "ON" and wait at least 2 seconds.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for 5 seconds.
4. If 1st trip DTC is detected, go to "Diagnostic Procedure".
With GST
Follow the procedure "WITH CONSULT-II" above.
EC-T/MTR-01:
Wiring Diagram
Step 1 - 2:
Step 3 - 6:
Diagnostic Procedure
Component Inspection
THROTTLE CONTROL MOTOR
1. Disconnect electric throttle control actuator harness connector F19.
2. Check resistance between terminals 3 and 6.
Resistance: Approximately 1 - 15 Ohm [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".
5. Perform "Idle Air Volume Learning".