DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U1104: Lost Communication with Driving Support ECU [12/2013 - 11/2016]: Procedure
WARNING: This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK CAN COMMUNICATION SYSTEM
- Using the Techstream, check if the CAN communication system is functioning normally.
Refer to DIAGNOSIS SYSTEM [12/2013 - 11/2016]
Result
Result Proceed to CAN communication is normal A CAN communication is malfunctioning B
Result: 1
A
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2013 - 11/2016]
Result: 2
B
GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2013 - 11/2016]
- Using the Techstream, check if the CAN communication system is functioning normally.