CAN Communication Line Signal Waveform Inspection

■ Check CAN Communication 

1. Connect all control module connector.
2. Ignition "ON".
3. Make CAN Communication wake up status
4. Back probe and measure signal waveform of Pin No. 14 (Low) terminal of Multipurpose Check Connector and chassis ground with VMI.
5. Back probe and measure signal waveform of Pin No. 6 (High) terminal of Multipurpose Check Connector and chassis ground with VMI.

   Specification:  Refer the specifications in Fig 1)

   Fig 1: Scantool Display - Normal CCP-CAN Signal Waveform

   Courtesy of KIA MOTORS AMERICA, INC.
6. Are the parameters displayed correctly?

   YES 

   • Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector or was repaired and PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

   NO 

   • Go to "CAN COMMUNICATION LINE INSPECTION " procedure.