P0315-NO CRANK SENSOR LEARNED

For a complete wiring diagram Refer to Section 8W.

When Monitored:
Under closed throttle decel and A/C off. ECT above 75°C (167°F). Engine start time is greater than 50 seconds.
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

TONE WHEEL/PULSE RING

WIRE HARNESS

CRANKSHAFT POSITION SENSOR

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

1.ACTIVE DTC

Does the code reset while cranking or during the test drive?

Yes

Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

2.WIRE HARNESS INSPECTION

Were any of the above conditions present?

Yes

Repair as necessary
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

3.TONE WHEEL/FLEX PLATE INSPECTION

Were any problems found?

Yes

Repair or replace the Tone Wheel/Flex Plate as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

4.CRANKSHAFT POSITION SENSOR

If there are no possible causes remaining, view repair.

Repair

Replace the Crankshaft Position Sensor.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)