DaimlerChrysler Jeep Grand Cherokee 2002, Service Manual

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Symptom:
P0335-CKP SENSOR CIRCUIT DYNAMIC PLAUSIBILITY
When Monitored and Set Condition:
P0335-CKP SENSOR CIRCUIT DYNAMIC PLAUSIBILITY
When Monitored: With the engine cranking or running.
Set Condition: The ECM detects a change in engine speed that has occurred more rapidly
than is physically possible by the engine.
POSSIBLE CAUSES
ENGINE CONTROL MODULE
OPEN SHIELD CIRCUIT
REPLACE THE CRANKSHAFT POSITION SENSOR
INTERMITTENT CONDITION
TEST ACTION APPLICABILITY
1 NOTE: This DTC indicates the Engine Speed Sensor has seen an engine
speed above 5200 RPM. This can occur if errant noise is picked up on the
CKP Sensor Signal circuit.
Turn the ignition on.
With the DRB, erase ECM DTCs.
Test drive the vehicle and monitor the DRB for ECM DTCs.
Did this DTC set again? All
Yes
→
Go To 2
No
→
Go To 4
2 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the CKP Sensor harness connector.
Measure the resistance of the Shield circuit.
Is the resistance below 10.0 ohms? All
Yes
→
Go To 3
No
→
Repair the Shield circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
69
DRIVEABILITY - DIESEL
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