Using a DVOM set to the DC scale to monitor less than 5 volts, measure the voltage between the sensor Cylinder Identification (CID) terminal and ground by backprobing the sensor connector. If the connector cannot be backprobed, fabricate or purchase a test harness. The sensor is okay if the voltage reading varies more than 0.1 volt with the engine running at varying RPM.
Fig. 1: CKP sensor wire harness connections for the 4.0L engine |
Fig. 2: Engine Signal Monitor and Adapter Harness connected to the engine control module |
Fig. 3: Output signal specifications chart (JE — 3.0L / G6 — 2.6L) |