Diagnosis Procedure

When "CAN Communication Bus Off" is detected in any control modules, or when it is not possible to communicate with all control modules/sensors with CAN by using SUZUKI scan tool, check the following procedure.

1. Connect oscilloscope or SUZUKI scan tool to DLC with ignition mode in "OFF".
2. Using oscilloscope or oscilloscope function of SUZUKI scan tool, observe waveform in the following condition when ignition mode is "ON".
   TERMINAL CHANNEL REFERENCE CHART
   
   

   Channel	Probe	Terminal No.
   1	+	G211-6, see CAN Communication System Circuit Diagram .
   	-	Ground
   2	+	G211-14, see CAN Communication System Circuit Diagram .
   	-	Ground

3. Compare observed signal waveform and waveforms given as "Reference Waveform:". Find the most similar signal waveform and identify the trouble system and trouble cause. Refer to REFERENCE WAVEFORM 
4. Perform TROUBLESHOOTING .