Signal Circuit Inspection

Check for short to ground in signal circuit
1. Measure resistance between terminal 1 of sensor harness connector and chassis ground
  Specification: Infinite
2. Is resistance within the specification?
  YES
  - Go to next step as below
  NO
  - Check signal circuit for short to ground. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check for short to power in signal circuit
1. Disconnect ECM connector.
2. Ignition "ON" and Engine "OFF".
3. Measure voltage between terminals 2 of sensor harness connector and chassis ground.
  Specification: Approx. 0V
4. Is voltage within the specification?
  YES
  - Go to next step as below.
  NO
  - Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check for open in signal harness
1. Ignition "OFF"
2. Measure resistance between terminals 1 of sensor harness connector and 22 of the ECM harness connector
  Specification: Approx. 0Ω
3. Is resistance within the specification?
  YES
  - Go to next step as below
  NO
  - Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.