6. Open Knock Sensor Signal Circuit

Turn the ignition off.

Disconnect Knock Sensor harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance of the Knock Sensor Signal circuit from the Knock Sensor harness connector to the PCM C3 harness connector.

Fig 1: Measuring Resistance Of Knock Sensor Signal Circuit From Knock Sensor Harness Connector To PCM C3 Harness Connector

Courtesy of DAIMLERCHRYSLER CORP.

Is the resistance below 5.0 ohms?

Yes >> Go To 7
No >> Repair the Knock Sensor Signal circuit for an open.
See POWERTRAIN VERIFICATION TEST - VER 2 .