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 of CAN No. 1 Bus Check
Symptom Suspected Area See page
Open in CAN Main Bus Wire. CAN Main Bus Wire

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Short in CAN Bus Wires (for LHD). CAN Bus Wires

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Short in CAN Bus Wires (for RHD). CAN Bus Wires

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Short to +B in CAN Bus Wire (for LHD). CAN Bus Wire

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Short to +B in CAN Bus Wire (for RHD). CAN Bus Wire

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Short to GND in CAN Bus Wire (for LHD). CAN Bus Wire

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Short to GND in CAN Bus Wire (for RHD). CAN Bus Wire

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Open in One Side of CAN Branch Wire. CAN Branch Wire

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Tech Tips

Refer to the How to Proceed with Troubleshooting for the CAN No. 1 Bus Check procedure.

Communication Stop Mode Table
Symptom Suspected Area See page
"ABS/VSC/TRC" is not displayed on the intelligent tester. Skid Control ECU Communication Stop Mode

Click here

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

Click here

"Steering Angle Sensor" is not displayed on the intelligent tester. Steering Angle Sensor Communication Stop Mode

Click here

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

Click here

"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 Management 1" and/or "Hybrid Control" is not displayed on the intelligent tester. 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

"Entry & Start/Wireless Tuner" is not displayed on the intelligent tester. Certification ECU Communication Stop Mode

Click here

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

Click here

"AVN1" is not displayed on the intelligent tester. Navigation ECU Communication Stop Mode

Click here