BCM Signal Circuit Inspection

■ Check CAN High Line 

1. IG "ON" & ENG "OFF".
2. After connect GDS, select "Oscilloscope" mode.
3. Measure the signal waveform on BCM CAN High line.

   Specification  : Refer to "SIGNAL WAVEFORM & DATA "

   Fig 1: Measuring Signal Waveform On BCM CAN High Line

   Courtesy of HYUNDAI MOTOR AMERICA
   Fig 2: Body Control Module, Smart Key, PCM & EBS Control Module Connector End Views

   Courtesy of HYUNDAI MOTOR AMERICA
4. Does the measured signal waveform follow the specification?

   YES 

   • Go to "CAN Low Line Inspection" procedure.

   NO 

   • Check short to battery or ground. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Check CAN Low Line 

1. IG "ON" & ENG "OFF".
2. After connect GDS, select "Oscilloscope" mode.
3. Measure the signal waveform on BCM CAN Low line.

   Specification  : Refer to "SIGNAL WAVEFORM & DATA "

   Fig 3: Measuring Signal Waveform On BCM CAN Low Line

   Courtesy of HYUNDAI MOTOR AMERICA
Fig 4: Body Control Module, Smart Key, PCM & EBS Control Module Connector End Views
Courtesy of HYUNDAI MOTOR AMERICA
4. Does the measured signal waveform follow the specification?

   YES 

   • Go to "COMPONENT INSPECTION " procedure.

   NO 

   • Check short to battery or ground. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.