Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the CKP sensor.
- Ignition ON, test for 2-3 volts between the signal circuit terminal 1 and the low reference circuit terminal 2.
- If less than the specified range, test the applicable circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
- If greater than the specified range, test the applicable circuit for a short to voltage. If the circuit tests normal, replace the ECM.
- If all circuits test normal, test or replace the CKP sensor.
IMPORTANT:
If the CKP sensor lead is damaged in any way, replace the CKP sensor.