Idle Air Control Motor: 2.4L
- Start engine an allow it to reach normal operating temperature. Using scan tool, actuate Idle Air Control (IAC) motor to 1400 RPM. If engine speed does not increase to 1400 RPM, go to next step. If engine speed increased to 1400 RPM, stop actuation. IAC motor is operating properly this time. Test is complete.
- Turn ignition off. Disconnect IAC motor connector. IAC motor is located on throttle body. Visually inspect connector for corroded, damaged, pushed-out or miswired terminals. Repair connector and terminals as necessary. If connector and terminals are okay, go to next step.
- Ensure ignition is off. Disconnect PCM connectors. PCM is located on left side of engine compartment, near front of battery. See Figure. Inspect connectors for damaged pins, corrosion and loose terminals. Repair connectors as necessary. If connectors are okay, measure resistance of each wire between IAC motor harness connector and PCM C2 harness connector. See Figure and Fig 1
. If each resistance is less than 5 ohms, replace IAC motor. If any resistance is 5 ohms or more, repair open in appropriate wire between IAC motor and PCM.
Courtesy of DAIMLERCHRYSLER CORPORATION