CAN COMMUNICATION SYSTEM PROBLEM SYMPTOMS TABLE
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.
Symptom |
Suspected Area |
Link |
|---|---|---|
Open in CAN Main Bus Line |
CAN Main Bus Line |
|
Short in CAN Bus Lines |
CAN Bus Lines |
|
Short to +B in CAN Bus Line |
CAN Bus Line |
|
Short to GND in CAN Bus Line |
CAN Bus Line |
|
Open in One Side of CAN Branch Line |
CAN Branch Line |
Refer to How to Proceed with Troubleshooting for the CAN V1 Bus Check procedure.
Symptom |
Suspected Area |
Link |
|---|---|---|
"Skid Control (ABS/VSC/TRAC)" is not displayed on the intelligent tester |
Skid Control ECU Communication Stop Mode |
|
"Spiral cable (Steering Angle Sensor)" is not displayed on the intelligent tester |
Steering Angle Sensor Communication Stop Mode |
|
"Yaw Rate Sensor" is not displayed on the intelligent tester |
Yaw Rate Sensor Communication Stop Mode |
|
"ECM (Engine)" is not displayed on the intelligent tester |
ECM Communication Stop Mode |
|
"Main Body" is not displayed on the intelligent tester |
Main Body ECU Communication Stop Mode |
|
"Power Management1" is not displayed on the intelligent tester |
Power Management Control ECU Communication Stop Mode |
|
"Combination Meter" is not displayed on the intelligent tester |
Combination Meter ECU Communication Stop Mode |
|
"Certification (Smart)" is not displayed on the intelligent tester |
Certification ECU Communication Stop Mode |
|
"Airbag" is not displayed on the intelligent tester |
Center Airbag Sensor Communication Stop Mode |
|
"Display and Navigation (AVN1)" is not displayed on the intelligent tester* |
Display and Navigation Assembly Communication Stop Mode |
|
"Four Wheel Drive Control" is not displayed on the intelligent tester |
4WD Control ECU Communication Stop Mode |
*: w/ Navigation System