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:
Diagnostic trouble code chart
1. DTCS FOR AIRBAG SYSTEM
If a malfunction code is displayed during the DTC check,
check the circuit listed for the code in the table below
(Proceed to the page listed for that circuit).
HINT:
When the SRS warning light remains on and the DTC
output is the normal system code, a volta ...
Data list / active test
1. DATA LIST
HINT:
Using the DATA LIST displayed on the intelligent tester,
you can read the value of the switch, sensor, actuator,
etc. without parts removal. Reading the DATA LIST as
the first step of troubleshooting is one way to shorten the
labor time.
Connect the intelligent tes ...
Clearance Warning ECU Power Source Circuit
DESCRIPTION
This circuit provides power to the clearance warning ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - AIR CONDITIONER
AMPLIFIER)
Disconnect the connectors from the clearance warning
ECU C9 and air conditioner amplifier con ...