Signal Circuit Inspection

RRSS (Rear Right Speed Sensor) Signal Inspection
1. IG KEY ON, ENG ON
2. 4WD ECM connector: Connect.
3. Monitor signal waveform between terminal 20 of 4WD ECM harness connector and chassis ground.
4. Start and drive vehicle in gear and maintain vehicle speed at approx. 10 km/h or less (6mph or less).
  Specification: refer to 'WAVEFORM INSPECTION '
  
  Is RRSS Signal display near the specified value?
  
  YES : --> This may be caused by intermittent fault. Verify data changeability by shaking the harness.
  
  NO : --> Inspect ground to short of RRSS circuit.
  - Inspect open or short of RRSS circuit.
  - Check for RRSS and replace it as necessary.
  - Check for 4WD ECM and replace it as necessary.
RRSS open inspection
1. IG KEY OFF, ENG OFF
2. 4WD ECM connector and RRSS connector: Disconnect.
3. Measure resistance between terminal 20 of 4WD ECM harness connector and terminal 2 of RRSS harness connector.
  Specification: Approx. 0Ω
  
  Is resistance display near the specified value?
  
  YES : --> Proceed to next inspection procedure.
  
  NO : --> Repair open circuit of RRSS circuit.
  
  --> If problem is solved, go to the "VERIFICATION OF VEHICLE REPAIR ".
  
  Fig 1: Open Circuit Of RRSS Circuit Diagram
  Courtesy of HYUNDAI MOTOR CO.
RRSS ground circuit open inspection
1. IG KEY OFF, ENG OFF
2. 4WD ECM connector and RRSS connector: Disconnect.
3. Measure resistance between terminal 9 of 4WD ECM harness connector and terminal 1 of RRSS harness connector.
  Specification: Approx. 0Ω
  
  Is resistance display near the specified value?
  
  YES : --> Proceed to next inspection procedure.
  
  NO : --> Repair open circuit of RRSS circuit.
  
  --> If problem is solved, go to the "VERIFICATION OF VEHICLE REPAIR ".
  
  Fig 2: Open Circuit Of RRSS Circuit Diagram
  Courtesy of HYUNDAI MOTOR CO.