Diagnostic Test

1) CHECKING THE TEMPERATURE SENSORS.
NOTE: Diagnose and repair any ambient air temperature (AAT), intake air temperature (IAT), or engine coolant temperature (ECT) sensor circuit or rationality DTCs before continuing with this test.

NOTE: Diagnose and repair any crankshaft (CKP) or camshaft (CMP) sensor circuit or rationality DTCs before continuing with this test.

NOTE: Diagnose and repair any communication DTCs before continuing with this test.

NOTE: Verify that the Pinion Factor has been programmed correctly into the PCM.

Perform the diagnostic procedure for *CHECKING THE TEMPERATURE SENSORS .

Were any problems found?

Yes
1. Repair as necessary.
2. Perform *PCM VERIFICATION TEST .
No
1. Go to 2).
2) CHECKING THE ENGINE COOLANT TEMPERATURE SENSOR OPERATION.
Perform the diagnostic procedure for *CHECKING THE ENGINE COOLANT TEMPERATURE SENSOR OPERATION .

Were any problems found?

Yes
1. Repair as necessary.
2. Perform *PCM VERIFICATION TEST .
No
1. Refer to *CHECKING FOR AN INTERMITTENT DTC .