Signal Circuit Inspection

Check the signal circuit for short to battery
1. Disconnect ECM harness connector
2. Ignition "ON" & Engine "OFF"
3. Measure voltage between terminal 2 of the OTS harness connector and chassis ground
  Specification: Approx. 0V
4. Is voltage within specification?
  YES
  - Go to 2.
  NO
  - Check for short to battery in signal circuit. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check the signal circuit for open
1. Ignition "OFF"
2. Measure resistance between terminals 2 of the OTS harness connector and 40 of the ECM harness connector.
  Specification: Approx. 0Ω
3. Is voltage within the specification?
  YES
  - Go to TERMINAL AND CONNECTOR INSPECTION .
  NO
  - Check for open in signal circuit. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.