CAN Communication System
PROBLEM SYMPTOMS TABLE1. COMMUNICATION STOP MODE TABLE
a. Check that there is no open circuit in the CAN main bus line, short between the lines, or short to +B in the "CHECK CAN BUS LINE". Select "BUS CHECK" on the hand held tester via the CAN VIM.
b. Check the communication stop mode of the ECUs or sensors not displayed among the following: "ENGINE", "ECT", "CRUISE CONTROL", "ABS/VSC/TRAC", "YAW/DECELERAT", "STEERING SENSOR", "BODY/GATEWAY", "BACK GUIDE MONITOR", "PSB" or "AIR SUSPENSION".
Problem Symptoms Table:
NOTE:
- Systems using the CAN communication system differ according to optional settings. Check which ECUs or sensors are installed on the vehicle.
- Non installed ECUs or sensors are not displayed. Be careful not to consider that they are in communication stop mode.
- If 2 or more ECUs or sensors are not displayed on the hand held tester via the CAN VIM, perform troubleshooting for communication stop mode for each undisplayed ECU or sensor. (Either side of the CAN bus lines may be open.)
2. DTC COMBINATION TABLE
a. Perform troubleshooting according to the combination of DTCs output.
HINT:
- SKID CONTROL ECU COMMUNICATION STOP MODE
- STEERING SENSOR COMMUNICATION STOP MODE
- YAW RATE SENSOR COMMUNICATION STOP MODE
- GATEWAY ECU COMMUNICATION STOP MODE
- ECM COMMUNICATION STOP MODE
- DISTANCE CONTROL ECU COMMUNICATION STOP MODE
- SUSPENSION CONTROL ECU COMMUNICATION STOP MODE
- TELEVISION CAMERA ECU COMMUNICATION STOP MODE
- SEAT BELT CONTROL ECU COMMUNICATION STOP MODE