Diagnosis System

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM

DIAGNOSIS SYSTEM

1. CAN BUS CHECK
(a) Using the Techstream, select "CAN Bus Check" from the "System Select".
2. CHECK INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION
(a) System (ECUs and sensors) that use CAN communication vary depending on the vehicle's optional settings. Check which systems (ECUs and sensors) are installed on the vehicle.

3. DTC TABLE BY ECU
HINT:
- In the CAN communication system, CAN communication system DTCs output by the ECU can be displayed by using the Techstream.
- If CAN communication system DTCs are output, the trouble cannot be determined solely from the DTCs. Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLESHOOTING" How to Proceed With Troubleshooting.

(a) ABS AND TRACTION ACTUATOR (SKID CONTROL ECU)
HINT: DTC communication uses the CAN communication system.

(b) POWER STEERING ECU
HINT: DTC communication uses the CAN communication system.

(d) AIR CONDITIONING AMPLIFIER
For vehicle with air conditioning (Automatic air conditioning system and Manual air conditioning system).
HINT: DTC communication uses the CAN communication system.

(e) COMBINATION METER ECU
HINT: DTC communication uses the CAN communication system.

(f) 4WD CONTROL ECU
For vehicle with 4WD only.
HINT: DTC communication uses the CAN communication system.

(g) MAIN BODY ECU
HINT: The center airbag sensor is connected to the CAN communication system but CAN communication DTCs are not output.

(h) CENTER AIRBAG SENSOR
HINT: The center airbag sensor is connected to the CAN communication system but CAN communication DTCs are not output.

4. DTC COMBINATION TABLE

HINT:
- o: Outputs under condition shown in table above
- X: Not output

HINT:
- o: Outputs under condition shown in table above
- X: Not output
- Check the stop mode by using the results of the CAN Bus Check for the center airbag sensor Center Airbag Sensor Communication Stop Mode and main body ECU Main Body ECU Communication Stop Mode.

(a) Perform troubleshooting according to the combination of DTCs output.
- ABS AND TRACTION ACTUATOR (SKID CONTROL ECU) COMMUNICATION STOP MODE: ABS and Traction Actuator (Skid Control ECU) Communication Stop Mode
- POWER STEERING ECU COMMUNICATION STOP MODE: Power Steering ECU Communication Stop Mode
- STEERING ANGLE SENSOR COMMUNICATION STOP MODE: Steering Angle Sensor Communication Stop Mode
- YAW RATE SENSOR COMMUNICATION STOP MODE: Yaw Rate Sensor Communication Stop Mode
- ECM COMMUNICATION STOP MODE: ECM Communication Stop Mode
- AIR CONDITIONING AMPLIFIER COMMUNICATION STOP MODE: Air Conditioning Amplifier Communication Stop Mode
- COMBINATION METER ECU COMMUNICATION SYSTEM: Combination Meter ECU Communication Stop Mode
- 4WD CONTROL ECU COMMUNICATION STOP MODE: