Plymouth Workshop Service and Repair Manuals

Idle Speed/Throttle Actuator - Electronic: Description and Operation
Vacuum Leak Found (IAC Fully Seated)

NAME OF CODE:

Vacuum Leak Found (IAC Fully Seated)

WHEN MONITORED:

With the engine running.

SET CONDITION:

The MAP sensor signal does not correlate to the TP sensor signal.

THEORY OF OPERATION:

The PCM monitors the MAP signal as well as the TP sensor signal. The vacuum reading decreases as throttle opening increases proportionally.
The PCM compares the two values to verify the relation between the two signals.

POSSIBLE CAUSES:

-

Vacuum Leak

-

Faulty MAP sensor

-

Faulty TP sensor