IG "OFF". Remove Fuel Pump Relay.
Measure resistance between battery power supply and power supply to fuel pump motor terminal of fuel pump relay. (Measurement "A")
Measure resistance between battery power supply and fuel pump relay control terminal of fuel pump relay.(Measurement "B")
Terminal | Continuity |
Battery power supply - Power supply to Fuel pump motor | No |
Battery power supply - Fuel pump relay control | Yes(Approx. 70Ω ~ 120Ω) |
Is the measured resistance within specification ?
 | ▶ Check for poor connection between PCM/ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
 | ▶ Substitute with a known - good Fuel Pump Relay and check for proper operation. If the problem is corrected, replace Fuel Pump Relay and go to "Verification of Vehicle Repair" procedure. |
