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)
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Other materials:
Changing shift ranges in S mode
To enter S mode, shift the shift lever to S. Shift ranges can be selected
by operating the shift lever, allowing you to drive in the shift range of
your choosing. The shift range can be selected by the shift lever.
Upshifting
Downshifting
The selected shift range, from 1 to
6, will b ...
On-vehicle inspection
1. INSPECT CAMSHAFT TIMING CONTROL VALVE ASSEMBLY
Connect the intelligent tester to the DLC3.
Turn the ignition switch to the ON position.
Start the engine and warm it up.
Select the intelligent tester from the ACTIVE TEST
menu.
Check the engine speed ...
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 ...