Component Inspection
■ Main Relay Check
1.

IG KEY "OFF".

2.

Disconnect main relay.

3.

IG KEY "ON" & ENG "OFF"

4.

Measure the resistanc between Power from battery(30) terminal and Power to component(87) of main relay harness connector and chassis ground.

5.

Measure the resistanc between Power from battery(85) terminal and Power to component(86) of main relay harness connector and chassis ground.

Terminal

Power Approval

30~87

NO

85~86

YES (Approx. 70Ω ~ 120Ω)

note
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6.

Is the measured resistance within specifications ?

▶ 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.

▶ 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.

Яндекс.Метрика