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Crankshaft Position/Engine Speed Sensor: Testing and Inspection
Ignition ECM

TESTING PROCEDURE:

NOTE: While trouble shooting, always check the wiring, fuses and connectors for good condition and routing. Use the wiring diagrams found in 

CHASSIS ELECTRICAL DIAGRAMS to supplement your testing efforts.

Accessing Ignition ECU Connector

1.

Turn ignition OFF.

2.

Access ignition ECM by removing the panel under left hand side of instrument panel.

3.

Remove ECM connector by pushing out the catch and folding out the wire cluster.

4.

Check ignition ECM ground connections at intake manifold. They should make good contact.

Removing Protective Cover

5.

Remove connector protective sleeve.
IMPORTANT:^ Never check connections from the front. Connectors can get damaged and worsen the problem.

^ Check connections through the holes in the connector.
^ Connection pin numbers are printed on the connector side.

Checking Terminal Pins

Powertrain Management > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Crankshaft Position/Engine Speed Sensor <--> [Crankshaft Position Sensor] > Component Information > Testing and Inspection > Ignition ECM

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