Toyota Sienna Service Manual: Lost Communication with Cruise Control Front Distance Range Sensor
DTC U0235 Lost Communication with Cruise Control Front Distance Range Sensor
DESCRIPTION
The laser sensor and distance control ECU transmit the data for general vehicle control and diagnosis function along the communication line. The laser sensor transmits information about the vehicle in front to the distance control ECU.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|
U0235 |
The ECM detects a communication error signal (from the laser sensor to the distance control ECU) for 0.15 sec. or more while the dynamic laser cruise control is in operation |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
- When the distance control ECU is replaced with a new one, initialization must be performed.
- When the laser sensor is replaced with a new one, adjustment of the laser sensor beam axis must be performed
1 CHECK HARNESS AND CONNECTOR (DISTANCE CONTROL ECU - LASER SENSOR)
- Disconnect the D2 distance control ECU connector and L1 laser sensor connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
2 CHECK DISTANCE CONTROL ECU
- Reconnect the D2 distance control ECU connector.
- Measure the voltage according to the value(s) in the table below.
Standard voltage
- Reconnect the L1 laser sensor connector
3 CHECK DTC OUTPUT
- Clear the DTCs.
- Turn the ignition switch to the ON position.
- Check if the same DTC is recorded
Result
END (INTERMITTENT PROBLEM IS PRESENT)
Lost Communication with Steering Angle Sensor
Module
DTC U0126 Lost Communication with Steering Angle Sensor
Module
DESCRIPTION
This circuit detects the angle and direction of the steering wheel and
automatically transmits a signal to
the skid con ...
Lost Communication with Radar Sensor
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 l ...
Other materials:
CD cannot be Ejected
INSPECTION PROCEDURE
1 PRESS "EJECT" AND CHECK OPERATION
Press the CD EJECT switch of the radio receiver for 2
seconds or more and check that the CD is ejected.
OK:
CD is ejected
2 REPLACE CD WITH ANOTHER AND RECHECK
Insert another CD and check if it is ejected.
OK:
CD ...
How to proceed with troubleshooting
Hint:
The ecm of this system is connected to the can and
multiplex communication system. Therefore, before
starting troubleshooting, make sure to check that there is
no trouble in the can and multiplex communication
systems
The intelligent tester can be used at steps 3, 4, 6, and 9.
...
Removal
1. RECOVER REFRIGERANT FROM REFRIGERATION
SYSTEM (See page AC-172)
2. REMOVE FRONT WHEEL RH
3. REMOVE FRONT FENDER APRON SEAL RH (See
page EM-26)
4. REMOVE V-RIBBED BELT (See page EM-6)
5. REMOVE RADIATOR AND FAN ASSEMBLY
(See page CO-28)
6. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY
(a) Re ...
