The crankshaft position (CKP) sensor is located on top of the flywheel housing. The engine control module (ECM) calculates the engine speed and exact position of the crankshaft based on the signal from the CKP sensor.

DTCs P0642, P0643, P0652 and P0653 are not set

The ECM detects that the engine speed is higher than 3,985 RPM.

DTC P0219 is a Type D DTC.

DTC P0219 is a Type D DTC.

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Important: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

1. Ask the driver if overrun is caused by gear slip-out, shift error, down-slope driving, etc.

⇒	If engine overrun has experienced, the engine must be inspected and repaired as necessary.

2. With the key ON and the CKP sensor disconnected, measure the voltage between the 5-volt reference and a good ground and observe that the DMM measures 4.9-5.1 volts.

⇒	If the DMM does not measure 4.9-5.1 volts, test the 5-volt reference for an open or high resistance.

⇒	If the circuits test normal, replace the control module.

3. With the key ON and the CKP sensor disconnected, measure the voltage between the 5-volt reference circuit and the low reference circuit, and observe that the DMM measures 4.9-5.1 volts.

⇒	If the DMM does not measure 4.9-5.1 volts, test the low reference for an open or high resistance.

⇒	If the circuits test normal, replace the control module.

4. With the key ON and the CKP sensor disconnected, connect a fused jumper wire to the signal circuit and momentarily and repeatedly probe the low reference circuit, and observe that the Crank Signal Present and engine RPM parameters change.

⇒	If the crank signal parameter and engine RPM does not change, test the signal circuit for an open, high resistance, a short to ground, or a short to voltage.

⇒	If the circuits test normal, replace the control module.

5. Ensure that the CKP sensor circuits are not routed too closely to the fuel injector wiring, after-market add-on electrical equipment, solenoids, relays, or motors.
6. Inspect the CKP sensor for physical damage, loose or improper installation, excessive air gap, or foreign material passing between the sensor and the reluctor wheel.
7. Inspect the CKP reluctor wheel for physical damage, improper installation, or excessive endplay or looseness.
8. If no other condition is found, replace the CKP sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.