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.
a.
Specification :
Terminal | Power Approval |
1~2 | NO |
3~5 | YES( 70Ω ~ 120Ω) |
(5)
Is the measured resistance within specification ?
YES
a.
Substitute with a known - good ECM and check for proper operation.
If the problem is corrected, replace ECM 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.
