Diagnosis System

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM (w/ Smart Key System): DIAGNOSIS SYSTEM

1. BUS CHECK

(a) Select "CAN Bus Check" from "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 optional settings of the vehicle. 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 stored by an ECU can be output 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".

(a) HYBRID VEHICLE CONTROL ECU

HINT
DTC communication uses the CAN communication system.

* *1: Refer to the hybrid control system Hybrid Control System.

* *2: Refer to the hybrid battery system Hybrid Battery System.

(b) ECM

HINT
DTC communication uses the CAN communication system.

(d) COMBINATION METER ASSEMBLY

HINT
DTC communication uses the CAN communication system.

(e) MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

HINT
DTC communication uses the CAN communication system.

* *: w/ Power Back Door System

(f) POWER STEERING ECU ASSEMBLY

HINT
DTC communication uses the CAN communication system.

(g) NAVIGATION RECEIVER ASSEMBLY

For vehicles with the navigation system only.

HINT
DTC communication uses the CAN communication system.

(h) CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

HINT
The certification ECU (smart key ECU assembly) is connected to the CAN communication system but CAN communication DTCs are not stored.

(i) YAW RATE SENSOR ASSEMBLY

HINT
The yaw rate sensor assembly is connected to the CAN communication system but CAN communication DTCs are not stored.

(j) STEERING ANGLE SENSOR

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

(k) CENTER AIRBAG SENSOR ASSEMBLY

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

(l) AIR CONDITIONING AMPLIFIER ASSEMBLY

HINT
The air conditioning amplifier assembly is connected to the CAN communication system but CAN communication DTCs are not stored.

(m) TIRE PRESSURE MONITOR ECU

HINT
The tire pressure monitor ECU is connected to the CAN communication system but CAN communication DTCs are not stored.

(n) BACK DOOR MOTOR UNIT (POWER BACK DOOR ECU)

For vehicles with the power back door system only.

HINT
The back door motor unit (power back door ECU) is connected to the CAN communication system but CAN communication DTCs are not stored.

(o) BUS BUFFER ECU (ACCESSORY GATEWAY)

HINT
The bus buffer ECU (accessory gateway) is connected to the CAN communication system but CAN communication DTCs are not stored.

4. DTC COMBINATION TABLE

HINT
* o: Stored.
* X: When one side of the CAN branch wire is open, storage may occur.
* -: Not stored.
* *1: Only stored when communication recovery has occurred. During communication stop, cannot be stored.
* *2: With gateway function.

V1 Bus Vol. 1

V1 Bus Vol. 2

V1 Bus Vol. 3