Conditions

Throttle Return Spring. Too Low Force. NOTE. May set if Mechanism is not Reset.





Fault symptoms
- CHECK ENGINE.

On-Board Diagnostics

Type of diagnosis:
- Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle

Enable criteria:
- Ignition in ON position.

Fault criteria:
- Throttle motor receiving close to 0% PWM in opening direction for 4 seconds.

Dependents:
- None.

System reaction to a fault:
- None.

OK report:





- Accelerator pedal has been depressed at some time and then fully released. 120 s has expired since then without fault criteria being fulfilled.

Fault handling: Fault Handling III, Other Emission-Related Comp. & Function
- Type III

Diagnostic help
Throttle return spring is too weak.

Check the wiring
Jiggle the leads and in-line connectors at various points and in different directions to detect any intermittent breaks or short circuit in the wiring. Observe the multimeter, test lamp or diagnostic tool while doing this.

Proceed to Diagnostic Procedures Checking the Mechanical Operation of the Flap