7. IAT Sensor Signal Circuit Open

Turn the ignition off.

Disconnect the PCM harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance of the IAT Sensor Signal circuit.

Fig 1: Measuring Resistance Of IAT Sensor Signal Circuit

Courtesy of DAIMLERCHRYSLER CORP.

Is the resistance below 5.0 ohms?

Yes >> Go To 8
No >> Repair the IAT Sensor Signal circuit for an open.
See POWERTRAIN VERIFICATION TEST - VER 2 .