DTC U1102 Lost Communication with Radar Sensor
DESCRIPTION
The laser sensor and distance control ECU transmit the data for general vehicle control and diagnosis function along the communication line. The distance control ECU determines the curve radius information based on signals from the steering wheel and yaw rate sensor. The distance control ECU transmits the current vehicle speed and curve radius information to the laser sensor.
DTC No. |
DTC Detection Condition |
Trouble Area |
U1102 |
The ECM detects a communication error signal (from the distance control ECU to the laser sensor) for 0.15 sec. or more while the dynamic laser cruise control is in operation |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
1 CHECK HARNESS AND CONNECTOR (DISTANCE CONTROL ECU - LASER SENSOR)
Standard resistance
2 CHECK DISTANCE CONTROL ECU
Standard voltage
3 CHECK DTC OUTPUT
Result
END (INTERMITTENT PROBLEM IS PRESENT)
How to proceed with
troubleshooting
NOTICE:
DTCs for the CAN communication system are as follows:
U0073, U0100, U0122, U0123, U0124, U0126 and U1101.
HINT:
If U0235 or U1102 is output alone, the CAN communication is
normal
1 CHECK AND CLEAR DTCS
HINT:
CAN communication DTCs are output when there is an
open or short in any ...
Inspection
1. INSPECT REAR SPEED SENSOR
(a) Disconnect the skid control sensor connector.
(b) Measure the resistance between terminals 1 and 2
of the skid control sensor connector.
OK:
Resistance:
less than 2.2 kΩ
(c) Measure resistance between each of terminals 1
and 2 of the skid control s ...
Removal
1. REMOVE REAR BUMPER COVER
Put protective tape under the quarter panel.
Partially the fender liner.
HINT:
Do not remove the fender liner completely but
partially so that the bumper cover can be removed.
Remove the 2 screws and 8 clips.
Using a screwdriver, disengage the claws an ...