Diagnosis System

NETWORKING: CAN COMMUNICATION 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 DTC's stored by the ECU can be output by using the Techstream.
* If CAN communication system DTC's are output, the trouble cannot be determined solely from the DTC's. Perform troubleshooting according to "How to Proceed with Troubleshooting".
(a) MASTER CYLINDER SOLENOID (SKID CONTROL ECU)

HINT
DTC communication uses the CAN communication system.

(b) ECM/ECT

HINT
DTC communication uses the CAN communication system.

(d) COMBINATION METER

HINT
DTC communication uses the CAN communication system.

(e) SEAT BELT CONTROL ECU

For vehicles with the dynamic radar cruise control system only.

HINT
DTC communication uses the CAN communication system.

(f) MULTIPLEX TILT AND TELESCOPIC ECU

HINT
DTC communication uses the CAN communication system.

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

(g) DISPLAY AND NAVIGATION MODULE DISPLAY

HINT
DTC communication uses the CAN communication system.

(h) OUTER MIRROR CONTROL ECU

HINT
The outer mirror control ECU is connected to the CAN communication system but CAN communication DTC's are not stored.

(i) CENTER AIRBAG SENSOR

HINT
The center airbag sensor is connected to the CAN communication system but CAN communication DTC's are not stored.

(j) CERTIFICATION ECU (SMART KEY ECU)

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

(k) AIR CONDITIONING AMPLIFIER

HINT
DTC communication uses the CAN communication system.

(l) POSITION CONTROL ECU AND SWITCH

HINT
The position control ECU and switch is connected to the CAN communication system but CAN communication DTC's are not stored.

(m) TIRE PRESSURE WARNING ECU

HINT
DTC communication uses the CAN communication system.

(n) NETWORK GATEWAY ECU

HINT
DTC communication uses the CAN communication system.

(o) PARKING ASSIST ECU

For vehicles with the wide view front and side monitor system only.

HINT
The parking assist ECU is connected to the CAN communication system but CAN communication DTC's are not stored.

(p) 4WD CONTROL ECU

HINT
The 4WD control ECU is connected to the CAN communication system but CAN communication DTC's are not stored.

(q) NO. 2 MAIN BODY ECU

HINT
The No. 2 main body ECU is connected to the CAN communication system but CAN communication DTC's are not stored.

(r) WINDSHIELD WIPER ECU

HINT
The windshield wiper ECU is connected to the CAN communication system but CAN communication DTC's are not stored.

(s) POWER BACK DOOR UNIT (POWER BACK DOOR ECU)

For vehicles with the power back door system only.

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

(t) SUSPENSION CONTROL ECU

HINT
DTC communication use the CAN communication system.

(u) DISTANCE CONTROL ECU

For vehicles with the dynamic radar cruise control system only.

HINT
The distance control ECU is connected to the CAN communication system but CAN communication DTC's are not stored.

(v) AFS ECU (HEADLIGHT SWIVEL ECU)

HINT
DTC communication uses the CAN communication system.

(w) STEERING CONTROL ECU

HINT
DTC communication uses the CAN communication system.

4. DTC COMBINATION TABLE

HINT
o: Stored.

x: When one side of branch wire is open, storage may occur.

*1: Only stored when communication recovery has occurred. During communication stop, cannot be stored.

*2: Stored when vehicle speed is 15 km/h (9 mph) or more.

*3: This DTC is not stored when only the spd signal is lost. When any of DTC's C2121 to C2125 is stored and the spd signal is lost, this DTC is stored.

*4: Stored when vehicle speed is 30 km/h (18 mph) or more.

*5: The ECM receives diagnosis data from the distance control ECU and stores a DTC.

*6: The seat belt control ECU receives diagnosis data from the distance control ECU and stores a DTC.

*7: Only stored while malfunction continues.