Signal Circuit Inspection

Check Voltage
1. IG "OFF" and disconnect Fuel Sender & Fuel Pump Motor connector and PCM connector.
2. IG "ON" & ENG "OFF"
3. Measure voltage between terminal 29 of PCM harness connector and chassis ground.
  Specification: Approx. 11 ~ 12V
4. Is the measured voltage within specification?
  YES
  - Go to " 2Check shorted in harness" procedure.
  NO
  - Repair short to ground in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check shorted in harness
1. IG "OFF" and disconnect Instrument cluster connector, Fuel sender & Fuel pump motor connector, and PCM connector.
2. Measure resistance between terminals 29 and 30 of PCM harness connector.
  Specification: Infinite
3. Is the measured voltage within specification?
  YES
  - Go to " 3Check short to battery in harness" procedure.
  NO
  - Repair shorted in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check short to battery in harness
1. IG "OFF" and disconnect Fuel Sender & Fuel Pump Motor connector.
2. IG "ON" & ENG "OFF"
3. Measure voltage between terminal 6 of Fuel Sender & Fuel Pump Motor harness connector and chassis ground.
  Specification: Approx. 0 V
4. Is the measured voltage within specification?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Repair short to battery in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.