Idle Speed/Throttle Actuator - Electronic: Description and Operation

The Powertrain Control Module (PCM) operates the Idle Air Control (IAC) motor through 4 circuits - K39, K40, K59, and K60. Each circuit connects to separate cavities in the PCM connector.

- Circuit K39 connects to cavity 39 of the PCM connector.
- Circuit K40 connects to cavity 40 of the PCM connector.
- Circuit K59 connects to cavity 59 of the PCM connector.
- Circuit K60 connects to cavity 60 of the PCM connector.