Fault Conditions

Throttle Motor Circuit. Shorted.







Fault symptoms
- CHECK ENGINE.
- Engine runs unevenly.
- Cruise control not working.

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:
- Motor current exceeding 8A during the positive or negative section of the PWM period. Criteria fulfilled for 3 min.

Dependents:
- None.

System reaction to a fault:
- Cruise control blocked.

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

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

Diagnostic help
The trouble code is generated when the lead from control module pin 48 is short circuited to B+.
Functions in the diagnostic tool related to the fault:
- Activate output for throttle motor.

For more information, Tech 2 Menu Structure, DTC Menu, Read Value, Activate, Sys Info

Checking the wiring
Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. Observe the multi meter, diagnostic tool or test lamp during the check.

Proceed to Diagnostic Procedures Checking the Control Module's Flap Motor Output