Signal Circuit Inspection

■ Check CAN high circuit 

1. IG "ON" & ENG "OFF".
2. Connect GDS and select Scope meter function.
3. Measure signal waveform of PDM CAN High line.

   Specification  : Refer to SIGNAL WAVEFORM & DATA .

   Fig 1: PDM CAN High Line Circuit Diagram With Connector End Views (1 Of 2)

   Courtesy of HYUNDAI MOTOR AMERICA
   Fig 2: PDM CAN High Line Circuit Diagram With Connector End Views (2 Of 2)

   Courtesy of HYUNDAI MOTOR AMERICA
4. Is the measured signal waveform of CAN high circuit normal?

   YES 

   • Go to next 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 GDS and select Scope meter function.
3. Measure signal waveform of PDM CAN Low line.

   Specification  : Refer to SIGNAL WAVEFORM & DATA .

   Fig 3: PDM CAN High Line Circuit Diagram With Connector End Views (1 Of 2)

   Courtesy of HYUNDAI MOTOR AMERICA
   Fig 4: PDM CAN High Line Circuit Diagram With Connector End Views (2 Of 2)

   Courtesy of HYUNDAI MOTOR AMERICA
4. Is the measured signal waveform of CAN low circuit normal?

   YES 

   • Go to next 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.