Pre-Collision System

PRE-COLLISION: PRE-COLLISION SYSTEM: U0235,U1102: Lost Communication with Cruise Control Front Distance Range Sensor
U1102 - Lost Communication with Radar Sensor

DESCRIPTION

The millimeter wave radar sensor and distance control ECU transmit the data for general vehicle control and diagnosis function via CAN communication.





INSPECTION PROCEDURE

NOTICE:
* When the seat belt control ECU is replaced with a new one, Initialization must be performed Pre-Collision System.
* When the distance control ECU is replaced with a new one, Initialization must be performed Installation.

PROCEDURE

1. CHECK DTC OUTPUT (DYNAMIC RADAR CRUISE CONTROL SYSTEM)

(a) Drive the vehicle at a speed for which cruise control operation is possible.

(b) Turn the cruise control main switch on.

(c) Check for DTCs.

Result:





B -- GO TO DYNAMIC RADAR CRUISE CONTROL SYSTEM Dynamic Radar Cruise Control System
A -- Continue to next step.

2. CHECK DTC OUTPUT (PRE-COLLISION SAFETY SYSTEM)

(a) Clear the DTC Pre-Collision System.

(b) Drive the vehicle.

(c) Recheck for DTCs.

OK:

U0235 and/or U1102 is not output.

NG -- REPLACE SEAT BELT CONTROL ECU Removal

OK -- CHECK FOR INTERMITTENT PROBLEMS (SYMPTOMS SIMULATION) Pre-Collision System