Control Circuit Inspection

■ Open Check 

1. IG "OFF".
2. Disconnect Stop Signal Electronic Module (SSEM) and HECU connector.
3. Measure resistance between HAC/DBC signal terminal of Stop Signal Electronic Module (SSEM) harness connector and HAC/DBC relay "ON" signal terminal of HECU harness connector.

   Specification  :Approx. below 1Ω

4. Is the measured value within specifications?

   YES 

   • Go to "Short Check" procedure.

   NO 

   • Repair open in stop lamp relay control circuit between the IBM relay box and HECU and then, Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Short Check 

1. IG "OFF".
2. Disconnect Stop Signal Electronic Module (SSEM) and HECU connector.
3. Measure resistance between HAC/DBC signal terminal of Stop Signal Electronic Module (SSEM) connector and chassis ground.

   Specification  : Infinite (∞Ω)

4. Is the measured value within specifications?

   YES 

   • Go to "Short Check" procedure.

   NO 

   • Repair short in stop lamp relay control circuit between the Stop Signal Electronic Module (SSEM) and HECU and then, Go to "VERIFICATION OF VEHICLE REPAIR " procedure.