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 AND DATA 

   Fig 1: Measuring Signal Waveform Of PDM CAN High Line

   Courtesy of KIA MOTORS AMERICA, INC.
   Fig 2: Identifying PCM, ESC And Instrument Cluster Connector Terminals

   Courtesy of KIA MOTORS AMERICA, INC.
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 AND DATA 

   Fig 3: Measuring Signal Waveform Of PDM CAN Low Line

   Courtesy of KIA MOTORS AMERICA, INC.
   Fig 4: Identifying PCM, ESC And Instrument Cluster Connector Terminals

   Courtesy of KIA MOTORS AMERICA, INC.
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.