Signal Circuit Inspection

Check for open in signal harness.
1. Ignition "OFF".
2. Measure resistance between terminals 2 of the sensor harness connector and 31 of the ECM harness connector.
  Specification: Approx. 0Ω
3. Is resistance within the specification?
  YES:
  - Go to step 2.
  NO:
  - Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check for short to ground in signal harness.
1. Ignition "OFF".
2. Measure resistance between terminal 2 of the sensor harness connector and chassis ground.
  Specification: Infinite
3. Is resistance within the specification?
  YES:
  - Go to step 3.
  NO:
  - Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check for short to power in signal harness.
1. Ignition "OFF".
2. Disconnect ECM connector.
3. Ignition "ON" & Engine "OFF".
4. Measure voltage between terminal 2 of the sensor harness connector and chassis ground.
  Specification: Approx. 0V
5. Is voltage within the specification?
  YES:
  - Go to "COMPONENT INSPECTION " procedure.
  NO:
  - Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.