P0315-NO CRANK SENSOR LEARNED
For a complete wiring diagram Refer to Section 8W.
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When Monitored:
Under closed throttle decel and A/C off. ECT above 75 degrees C (167 degrees F). Engine start time is greater than 50 seconds.
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Set Condition:
One of the CKP sensor target windows has more than 2.86% variance from the reference. Two Trip Fault. Three good trips to turn off the MIL.
Possible Causes
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TONE WHEEL/PULSE RING
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WIRE HARNESS
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CRANKSHAFT POSITION SENSOR
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Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.
(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
Diagnostic Test
1.
ACTIVE DTC
Ignition on, engine not running.
With a scan tool, select View DTCs and read and record the related Freeze Frame data.
With a scan tool, clear DTCs, PCM battery disconnect to reset the PCM.
Start the engine.
If the MIL has not yet illuminated, test drive the vehicle to try to get the code to reset.
Does the code reset while cranking or during the test drive?
Yes
No
2.
WIRE HARNESS INSPECTION
Turn the ignition off.
Visually inspect the CKP wire harness. Look for any chafed, pierced, pinched, or partially broken wires.
Visually inspect the CKP wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
Make sure the Crankshaft Position Sensor is properly installed and the mounting bolt(s) are torqued to the proper specification.
Were any of the above conditions present?
Yes
No
3.
TONE WHEEL/FLEX PLATE INSPECTION
Remove the Crankshaft Position Sensor.
Inspect the Tone Wheel/Flex Plate slots for damage, foreign material, or excessive movement.
Were any problems found?
Yes
No
4.
CRANKSHAFT POSITION SENSOR
If there are no possible causes remaining, view repair.
Repair