Control Circuit Inspection

■ Check short to ground in harness 

1. IG "OFF". Disconnect EMS box and PCM connector.
2. Measure the resistance between control terminal of main relay (EMS box) harness connector and chasses ground.

   Specification:  Infinite

3. Is the measured resistance within specification?

   YES 

   • Go to "Check open in harness" procedure below.

   NO 

   • Repair short to ground in control harness. Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Check open in harness 

1. IG "OFF". Disconnect EMS box and PCM connector.
2. Measure the resistance between control terminal of main relay (EMS box) harness connector and main relay control terminal of PCM harness connector.

   Specification:  Approx. below 1Ω

3. Is the measured resistance within specification?

   YES 

   • Go to Component Inspection  procedure.

   NO 

   • Repair open in control harness. Go to "VERIFICATION OF VEHICLE REPAIR " procedure.