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Home >> Toyota >> 2007 >> FJ Cruiser 2WD V6-4.0L (1GR-FE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Initial Inspection and Diagnostic Overview >> CAN Communication System >> Diagnosis System
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Diagnosis System

DIAGNOSIS SYSTEM

1. BUS CHECK




a. Select "BUS CHECK" from the "OBD/MOBD MENU" screen.

HINT: The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the intelligent tester via the CAN VIM.



b. Press "ENTER" on the intelligent tester via the CAN VIM.




c. The screen displays the ECUs and sensors that are properly connected to the CAN communication system.

HINT: If any properly connected ECUs or sensors are not displayed, there is a communication stop in the system.

2. CHECK INSTALLED SYSTEMS (ECUs AND SENSORS) THAT ADOPT CAN COMMUNICATION




a. Systems (ECUs and sensors) that adopt 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 intelligent tester.
- If CAN communication system DTCs are output, trouble cannot be determined solely from the DTCs. Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLESHOOTING". How to Proceed With Troubleshooting

a. SKID CONTROL ECU





HINT: DTC communication uses the SIL Line.

b. YAW RATE SENSOR

HINT:
- The yaw rate sensor is connected to the CAN communication system but CAN communication DTCs are not output.
- If "YAW/DECELERATE" is not displayed on the "BUS CHECK" screen on the intelligent tester, proceed to "Yaw Rate Sensor Communication Stop Mode".

c. STEERING ANGLE SENSOR

HINT:
- The steering sensor is connected to the CAN communication system but CAN communication DTCs are not output.
- If "STEERING_SENSOR" is not displayed on the "BUS CHECK" screen on the intelligent tester, proceed to "Steering Angle Sensor Communication Stop Mode".

d. ECM

HINT:
- The ECM is connected to the CAN communication system but CAN communication DTCs are not output.
- If "ENGINE" is not displayed on the "BUS CHECK" screen on the intelligent tester, proceed to "ECM Communication Stop Mode.




4. DTC COMBINATION TABLE
a. Perform troubleshooting according to the combination of DTCs output. How to Proceed With Troubleshooting

HINT:
- Skid Control ECU Communication Stop Mode
- ECM Communication Stop Mode
- Yaw Rate Sensor Communication Stop Mode
- Steering Angle Sensor Communication Stop Mode
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