Diagnosis System

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM

1. BUS CHECK

(a) Select "CAN Bus Check" from the "System Select".

2. CHECK INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION

(a) Systems (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) MULTIPLEX TILT AND TELESCOPIC ECU

HINT
DTC communication uses the CAN communication system.





HINT
*: Refer to Power Tilt and Power Telescopic Steering Column System B2624.

(b) MAIN BODY ECU

HINT
DTC communication uses the CAN communication system.





(c) ECM

HINT
The ECM is connected to the CAN communication system but CAN communication DTCs are not output.

(d) SKID CONTROL ECU WITH ACTUATOR

HINT
DTC communication uses the CAN communication system.





(e) COMBINATION METER ECU

HINT
DTC communication uses the CAN communication system.





(f) AIR CONDITIONING AMPLIFIER

HINT
DTC communication uses the CAN communication system.





(g) POWER STEERING ECU

For vehicles with a power steering ECU only.

HINT
DTC communication uses the CAN communication system.





(h) STEERING ANGLE SENSOR

HINT
The steering angle sensor is connected to the CAN communication system but CAN communication DTCs are not output.

(i) CENTER AIRBAG SENSOR

HINT
The center airbag sensor is connected to the CAN communication system but CAN communication DTCs are not output.

(j) 4WD CONTROL ECU

For vehicles with 4-wheel drive only.

HINT
The 4WD control ECU is connected to the CAN communication system but CAN communication DTCs are not output.

(k) BUS BUFFER ECU

For vehicles with a bus buffer ECU only.

HINT
The bus buffer ECU is connected to the CAN communication system but CAN communication DTCs are not output.

(l) FRONT POWER SEAT CONTROL ECU AND SWITCH LH

For vehicles with a front power seat control system (w/ Seat Memory) only.

HINT
The front power control seat ECU and switch LH is connected to the CAN communication system but CAN communication DTCs are not output.

(m) OUTER MIRROR CONTROL ECU

For vehicles with a front power seat control system (w/ Seat Memory) only.

HINT
The outer mirror control ECU and switch LH is connected to the CAN communication system but CAN communication DTCs are not output.

4. DTC COMBINATION TABLE

HINT
* o: Stored.
* X: When one side of the branch wire is open, storage may occur.
* -: Not stored.
* *1: During a communication stop, cannot be stored.
* *2: Only during failure status.