CAN COMMUNICATION SYSTEM PROBLEM SYMPTOMS TABLE

Tech Tips


  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Result List of Check CAN Bus Line
Symptom Suspected Area See page
The result of "How to proceed with Troubleshooting" is "Open in CAN Main Wire". Open in CAN Main Wire

Click here

The result of "How to Proceed with Troubleshooting" is "Short in CAN Bus Lines". Short in CAN Bus Lines

Click here

The result of "How to Proceed with Troubleshooting" is "Short to B+ in CAN Bus Line". Short to B+ in CAN Bus Line

Click here

The result of "How to Proceed with Troubleshooting" is "Short to GND in CAN Bus Line". Short to GND in CAN Bus Line

Click here

The result of "How to Proceed with Troubleshooting" is "Open in One Side of CAN Branch Line". Open in One Side of CAN Branch Line

Click here

Tech Tips

Refer to How to Proceed with Troubleshooting for the CAN V1 Bus Check procedure.

Communication Stop Mode Table
Symptom Suspected Area See page
"Skid Control (ABS/VSC/TRAC)" is not displayed on the intelligent tester ABS and Traction Actuator (Skid Control ECU) Communication Stop Mode

Click here

"Air Conditioning Amplifier" is not displayed on the intelligent tester (w/o Entry and Start System) Air Conditioning Amplifier Communication Stop Mode

Click here

"Power Steering (EPS)" is not displayed on the intelligent tester. Power Steering ECU Communication Stop Mode

Click here

"Spiral cable (Steering Angle Sensor)" is not displayed on the intelligent tester Steering Angle Sensor Communication Stop Mode

Click here

"Yaw Rate Sensor" is not displayed on the intelligent tester Yaw Rate Sensor Communication Stop Mode

Click here

"ECM (Engine)" is not displayed on the intelligent tester ECM Communication Stop Mode

Click here

"Main Body" is not displayed on the intelligent tester Main Body ECU Communication Stop Mode

Click here

"Power Management1" is not displayed on the intelligent tester (w/ Entry and Start System) Power Management Control ECU Communication Stop Mode

Click here

"Combination Meter" is not displayed on the intelligent tester Combination Meter ECU Communication Stop Mode

Click here

"Certification (Smart)" is not displayed on the intelligent tester (w/ Entry and Start System) Certification ECU Communication Stop Mode

Click here

"Airbag" is not displayed on the intelligent tester Center Airbag Sensor Communication Stop Mode

Click here

"Headlight swivel (AFS)" is not displayed on the intelligent tester (w/ Adaptive Front-lighting System and w/o Entry and Start System) AFS ECU Communication Stop Mode

Click here

"Electric Parking Brake" is not displayed on the intelligent tester Electric Parking Brake ECU Communication Stop Mode

Click here

"Display and Navigation (AVN)" is not displayed on the intelligent tester (for Radio and Display Type) Audio Receiver Assembly Communication Stop Mode

Click here