P0340-Cmp/Ckp Position Sensor Circuit - Ckp Dynamic Plausibility - DaimlerChrysler Jeep Grand Cherokee 2002 Service Manual

Symptom:
P0340-CMP/CKP POSITION SENSOR CIRCUIT - CKP DYNAMIC
PLAUSIBILITY
When Monitored and Set Condition:

P0340-CMP/CKP POSITION SENSOR CIRCUIT - CKP DYNAMIC PLAUSIBILITY

When Monitored: The engine speed is above 790 RPM.
Set Condition: The ECM compares the current crankshaft RPM to the last calculated
crankshaft RPM and the acceleration or deceleration is greater than is physically possible.
CHECK CRANKSHAFT POSITION SENSOR SIGNAL
ENGINE CONTROL MODULE
OPEN SHIELD CIRCUIT
INTERMITTENT CONDITION
CRANKSHAFT POSITION SENSOR SIGNAL CIRCUIT(S) SHORTED TO GROUND
CKP SENSOR CIRCUITS SHORTED TOGETHER
CKP SENSOR SIGNAL CIRCUITS OPEN
CKP SENSOR SIGNAL CIRCUIT(S) SHORTED TO VOLTAGE
TEST
1 Attempt to start the engine.
Did the engine start?
Yes → Go To 2
→ Go To 3
No
POSSIBLE CAUSES
ACTION
71
DRIVEABILITY - DIESEL
APPLICABILITY
All