Signal Circuit Inspection

Check CAN high circuit
1. IG "ON" & ENG "OFF".
2. Connect scantool and select Scope meter function.
3. Measure signal waveform of PDM CAN High line.
  Specification: Refer to SIGNAL WAVEFORM & DATA
  
  Fig 1: Measuring Signal Waveform Of PDM CAN High Line
  Courtesy of HYUNDAI MOTOR CO.
4. Is the measured signal waveform of CAN high circuit normal?
  YES
  - Go to "Check CAN Low circuit " procedure.
  NO
  - Check short to battery/ground in CAN high circuit, and repair or replace as necessary.
    Go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check CAN Low circuit
1. IG "ON" & ENG "OFF"
2. Connect scantool and select Scope meter function.
3. Measure signal waveform of PDM CAN Low line.
  Specification: Refer to SIGNAL WAVEFORM & DATA
  
  Fig 2: Measuring Signal Waveform Of PDM CAN Low Line
  Courtesy of HYUNDAI MOTOR CO.
4. Is the measured signal waveform of CAN low circuit normal?
  YES
  - Go to next inspection procedure.
  NO
  - Check short to battery/ground in CAN low circuit and repair or replace as necessary, and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.