Component Inspection
1.

Fuel pump relay check

(1)

Key "OFF".

(2)

Disconnect fuel pump relay.

(3)

Measure the resistance between terminal 1 and 2 of fuel pump relay component side.

(4)

Measure the resistance between terminal 3 and 5 of fuel pump relay component side.

1)

Specification :

Terminal

Power Approval

1~2

NO

3~5

YES( 70Ω ~ 120Ω)

(5)

Is the measured resistance within specification ?

YES

a.

Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage. So, check poor connections and the related circuit between ECM and component thoroughly. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

NO

a.

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.

Яндекс.Метрика