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