Diagnosis System

WARNING: This page is about a different car, the 2007 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.

BUS CHECK
HINT:

The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the intelligent tester via CAN VIM.
1. Select "BUS CHECK" from the "OBD/MOBD MENU" screen.
  
  Fig 1: Selecting "BUS CHECK" From "OBD/MOBD MENU" Screen
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Press "ENTER" on the intelligent tester via CAN VIM.
  
  Fig 2: Identifying "ENTER" Button On Intelligent Tester Via CAN VIM
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. The screen displays the ECUs and sensors that are properly connected to the CAN communication system.
  HINT:
  
  There is a communication stop in the system of any properly connected ECUs or sensors that are not displayed (See HOW TO PROCEED WITH TROUBLESHOOTING ).
  
  Fig 3: Identifying ECUS And Sensors That Are Properly Connected To CAN Communication System
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

DTC TABLE BY ECU

HINT:

If CAN communication system DTCs are output, trouble cannot be determined only by the DTCs. Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLESHOOTING " ).

Skid Control ECU

HINT:

DTC communication uses the SIL line.

DTC NO. 2 - DETECTION ITEM

DTC No. 2	Detection Item
U0073/94	Control Module Communication Bus Off
U0100/65	Lost Communication With ECM/PCM "A"
U0123/62	Lost Communication With Yaw Rate Sensor Module
U0124/95	Lost Communication With Lateral Acceleration Sensor Module
U0126/63	Lost Communication With Steering Angle Sensor Module

ECM
HINT:

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