Test Description

The numbers below refer to the step numbers in the diagnostic procedures.

1. 3
   
   This step determines if the fault is present.
2. 6
   
   This step simulates a CKP sensor signal to the PCM. If the PCM receives the signal, the fuel pump will operate for about two seconds. If the fuel pump operates, the condition is either terminal contact at the CKP sensor, the CKP sensor, or the CKP sensor reluctor wheel.
3. 7
   
   This test determines if the CKP sensor signal circuit or if the PCM is faulty.
4. 11
   
   The CKP system variation learn procedure must be performed anytime the relationship between the CKP sensor and the CKP reluctor wheel is changed.
5. 12
   
   To inspect the reluctor wheel, remove the starter and rotate the crankshaft while viewing the reluctor wheel through the CKP sensor hole. If you cannot determine if the reluctor wheel is damaged, the oil pan may have to be removed.
6. 14
   
   The CKP system variation learn procedure must be performed anytime the relationship between the CKP sensor and the CKP reluctor wheel is changed.
7. 15
   
   Before replacing the PCM, inspect the PCM harness connections.