2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 633
- GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
See: Engine, Cooling and Exhaust/Engine/Tune-up and Engine Performance Checks/Idle Speed/Testing and Inspection/Programming and
Relearning/Special Repair Requirement
- END
P1238
P1238, P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
Description
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 throttle position sensor detects the throttle valve position, and the opening and closing speed of the throttle valve and sends the voltage signals
to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and opens/closes the throttle valve in response to
driving conditions via the throttle control motor.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
- GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A AND B
1. Turn ignition switch ON and wait at least 1 second.
2. Shift selector lever position to D and wait at least 3 seconds.
3. Shift selector lever position to P.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Turn ignition switch ON and wait at least 1 second.
6. Shift selector lever position to D and wait at least 3 seconds.
7. Shift selector lever position to P.
8. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON.
9. Check DTC.
Is DTC detected?
YES - Go to See: P Code Charts/P1238.
NO - GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C
1. Turn ignition switch ON and wait at least 1 second.
2. Shift selector lever position to D and wait at least 3 seconds.
3. Shift selector lever position to P.
4. Start engine and let it idle for 3 seconds.
5. Check DTC.
Is DTC detected?
YES - Go to See: P Code Charts/P1238.
NO - INSPECTION END
Diagnosis Procedure
1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
