Control Circuit Inspection

Check for short to ground in control circuit.
1. Ignition "OFF" & Relay connector: Disconnected.
2. Measure resistance between terminal 3 of the relay harness connector and chassis ground
  Specification: Infinite
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 power in control circuit.
1. Disconnect ECM connector.
2. Ignition "ON" and Engine "OFF".
3. Measure voltage between terminal 3 of the relay harness connector and chassis ground
  Specification: Approx 0V
4. Is voltage within the specification?
  YES:
  - Go to step 3.
  NO:
  - Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check for open in control harness.
1. Measure resistance between terminals 3 of the relay harness connector and 10 of the ECM harness connector
  Specification: Approx 0Ω
2. Is resistance within the specification?
  YES:
  - Thoroughly check connectors for loose or poor connections, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO:
  - Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.