Up to 08/2009

PRE-COLLISION: PRE-COLLISION SYSTEM: U0122,U0123,U0126,U0140,U0151,U1100: Lost Communication with Vehicle Dynamics Control Module
U1100 - Lost Communication with Seat Belt Control ECU

DESCRIPTION

The driving support ECU uses the millimeter wave radar sensor to detect obstacles in front of the vehicle.

Based on this information, the driving support ECU sends pre-collision control operation signals.

These DTCs are stored when a communication malfunction occurs between the sensors and ECUs that detect collisions, or between ECUs that perform the pre-collision control.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Select "CAN Bus Check" from the "System Selection Menu" screen on the Techstream.

(b) Select "Communication Malfunction DTC" from the "CAN Bus Check" screen, and then select "Enter".

Result:





B -- GO TO CAN COMMUNICATION SYSTEM CAN Communication System

A -- CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION
) How To Proceed With Troubleshooting