Initial Inspection and Diagnostic Overview
Information Bus: Initial Inspection and Diagnostic Overview
Diagnosis System
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM
DIAGNOSIS SYSTEM
1. BUS CHECK
(a) Select "CAN Bus Check" from the "System Select" screen on the Techstream.
HINT:
-
If any properly connected ECUs or sensors are not displayed, there is a communication stop in the system See: Symptom Related
Diagnostic Procedures/Problem Symptoms Table.
-
Display the communication BUS check screen for approximately 1 minute and check for ECUs and sensors that are not indicated on the
screen.
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 Techstream.
-
If CAN communication system DTCs are output, trouble cannot be determined solely from the DTCs. Perform troubleshooting according
to "HOW TO PROCEED WITH TROUBLESHOOTING " See: 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 SIL line.
(c) COMBINATION METER ECU
HINT: DTC communication uses the CAN communication system.