P1345

P1345 CKP/CMP Correlation.:

P1345 CKP/CMP Correlation:

CIRCUIT DESCRIPTION

This DTC determines if the distributor is installed incorrectly, or if there is a mechanical malfunction in the engine.


CONDITIONS FOR SETTING THE DTC

When the engine is running, the cam sensor reference pulse is not detected at the correct relative position to the crankshaft position sensor pulse.


ACTION TAKEN WHEN THE DTC SETS

^ The VCM turns the MIL ON when this DTC is reported and one failure has occurred.

^ The VCM records the operating conditions at the time the Diagnostic Fails. Freeze Frame and Failure Records store this information.


CONDITIONS FOR CLEARING THE MIL/DTC

^ The VCM turns the MIL OFF after 3 consecutive drive trips when the test has Run and Passed and not Failed.

^ A history DTC will clear if no fault conditions have been detected for 40 warm-up cycles (coolant temperature has risen 22°C (40°F) from the startup coolant temperature and the engine coolant temperature exceeds 70°C (160°F) during the same ignition cycle).

^ Use the scan tool Clear Information function.

^ Disconnect the VCM battery feed for 30 seconds.


TEST DESCRIPTION

The numbers below refer to the step numbers on the diagnostic table.

4. This test will determine if this DTC is intermittent.
5. When the engine speed is raised to 2000 RPM the camshaft retard offset should not vary more than 2 degrees.
6. If excessive pressure is used when performing this test unintentional damage to the distributor shaft could result.
7. If the distributor is one tooth off in either the advanced or retard positions the vehicle may run but 0 degrees camshaft retard offset will not be obtained.
8. If 0 degrees cannot be obtained during this procedure refer to Diagnostic Aids.