Signal Circuit Inspection

Steering angle sensor #1 Signal Inspection
1. IG KEY ON, ENG ON
2. 4WD ECM, Steering angle sensor connector: Connect.
3. Monitor signal waveform between terminal 5 of Steering angle sensor harness connector M14 and chassis ground.
4. Rotate the steering wheel both ways.
  Specification: refer to 'WAVEFORM INSPECTION '
  
  Is Steering angle sensor #1 Signal display near the specified value?
  
  YES : --> This may be caused by intermittent fault. Verify data changeability by shaking the harness.
  
  NO : --> Inspect power and power supply line of Steering angle sensor #1 circuit.
  - Inspect ground and ground line of Steering angle sensor #1 circuit.
  - Inspect ground to short of Steering angle sensor #1 circuit.
  - Inspect open or short of Steering angle sensor #1 circuit.
  - Check for Steering angle sensor module and replace it as necessary.
  - Check for 4WD ECM and replace it as necessary.
Steering angle sensor #1 short to ground Inspection
1. IG KEY OFF, ENG OFF
2. 4WD ECM connector and Steering angle sensor connector: Disconnect.
3. Measure resistance between terminal 5 of Steering angle sensor harness connector M14 and chassis ground.
  Specification: Approx. ∞Ω
  
  Is resistance display near the specified value?
  
  YES : --> Proceed to next inspection procedure.
  
  NO : --> Repair ground to short circuit of Steering angle sensor #1 circuit.
  
  --> If problem is solved, go to the "VERIFICATION OF VEHICLE REPAIR "
  
  Fig 1: Ground To Short Circuit - Steering Angle Sensor Circuit Diagram
  Courtesy of HYUNDAI MOTOR CO.
Steering angle sensor #1 open Inspection
1. IG KEY OFF, ENG OFF
2. 4WD ECM connector and Steering angle sensor connector: Disconnect.
3. Measure resistance between terminal 5 of Steering angle sensor harness connector M14 and terminal 23 of 4WD ECM harness connector.
  Is resistance display near the specified value?
  
  YES : --> Replace with normal Steering angle sensor module temporarily and check if vehicle runs normally. If trouble disappears, replace Steering angle sensor control module.
  - Replace with normal 4WD ECM temporarily and check if vehicle runs normally. If trouble disappears, replace 4WD ECM.
  - If problem is solved, go to the "VERIFICATION OF VEHICLE REPAIR ".
  NO : --> Repair open circuit of Steering angle sensor #1 circuit.
  
  --> If problem is solved, go to the "VERIFICATION OF VEHICLE REPAIR ".
  
  Fig 2: Open Circuit Of Steering Angle Sensor Circuit Diagram
  Courtesy of HYUNDAI MOTOR CO.