Signal Circuit Inspection

Check Voltage
1. IG "OFF" and disconnect Fuel Sender & Fuel Pump Motor connector.
2. IG "ON" & ENG "OFF"
3. Measure voltage between terminal 4 of Fuel Sender & Fuel Pump Motor harness connector and chassis ground.
  Specification: Approx. 12V
4. Is the measured voltage within specification?
  YES
  - Go to " 2 Check short to ground in harness" procedure.
  NO
  - Repair open in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check short to ground in harness
1. IG "OFF" and disconnect Fuel sender & Fuel pump motor connector and PCM connector.
2. Measure resistance between terminal 6 of Fuel sender & Fuel pump motor harness connector and chassis ground.
  Specification: Infinite
3. Is the measured voltage within specification?
  YES
  - Go to " 3 Check open in harness" as follows.
  NO
  - Repair short to ground in harness, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check open in harness
1. IG "OFF" and disconnect Fuel sender & Fuel pump motor connector and PCM connector.
2. Measure resistance between terminal 6 of Fuel sender & Fuel pump motor connector and terminal 30 of PCM harness connector.
  Specification: Below 1Ω
3. Is the measured voltage within specification?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Repair open in harness, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.