Component Inspection
1.

Main relay check

(1)

Key "OFF".

(2)

Disconnect Main relay.

(3)

Measure the resistance between terminal 1 and 5 of main relay. (Component side)

(4)

Measure the resistance between terminal 2 and 4 of main relay. (Component side)

a.

Specification :

Terminal

Power Approval

1~5

NO

2~4

YES(Approx. 70Ω ~ 120Ω)

(5)

Is the measured resistance within specifications ?

YES

a.

Go to "Alternator check" procedure.

NO

a.

Substitute with a known - good Main relay and check for proper operation.

If the problem is corrected, replace Main relay and go to "Verification of Vehicle Repair" procedure.

2.

Alternator check

(1)

Key "OFF".

(2)

Check the tension of alternator belt.

(3)

Check corrosion, damage or looseness of Battery terminal and Alternator terminal.

(4)

Engine start.

(5)

Operate electrical parts(Head lamp, Defoger, etc).

(6)

Measure the voltage at 2000rpm.

a.

Specification : Approx 12.5V ~ 14.5V

(7)

Is the measured voltage within specifications ?

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 Alternator and check for proper operation.

If the problem is corrected, replace Alternator and go to "Verification of Vehicle Repair" procedure.

Яндекс.Метрика