Toyota Sienna Quiz
Cruise control

Lost Communication with Cruise Control Front Distance Range Sensor

In this manual: Cruise control
Introduction — 55Service specifications — 7Maintenance — 7Engine — 264U151e automatic transaxle — 108Transfer — 19Propeller shaft — 8Drive shaft — 14Differential — 16Axle — 18Suspension — 37Tire and wheel — 54Brake control — 141Parking brake — 16Steering Column — 11Power steering — 18Air conditioning — 106Supplemental restraint system — 146Seat belt — 22Theft deterrent — 14Engine immobiliser — 17Cruise control — 65Lighting — 61Wiper and washer — 13Door lock — 42Meter — 28Audio / visual — 94Navigation — 108Park assist / monitoring — 33Horn — 5Garage door opener — 42GR-FE Engine control system — 126Supplemental restraint system — 147Other system — 14Windshield / windowglass — 43Mirror — 23Instrument panel — 6Seat belt — 22Seat — 92Engine hood / door — 104Exterior — 39Interior — 5Sliding roof — 9Multiplex communication — 18Can communication — 23
7steps
~42min
2/5difficulty
Done 0 of 7

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
  • Communication circuit
  • Laser sensor
  • Distance control ECU

WIRING DIAGRAM

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)

CHECK HARNESS AND CONNECTOR (DISTANCE CONTROL ECU - LASER SENSOR)
  1. Disconnect the D2 distance control ECU connector and L1 laser sensor connector.
  2. Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

2 CHECK DISTANCE CONTROL ECU

CHECK DISTANCE CONTROL ECU
  1. Reconnect the D2 distance control ECU connector.
  2. Measure the voltage according to the value(s) in the table below.

Standard voltage

Standard voltage
  1. Reconnect the L1 laser sensor connector

3 CHECK DTC OUTPUT

  1. Clear the DTCs.
  2. Turn the ignition switch to the ON position.
  3. Check if the same DTC is recorded

Result

Result

END (INTERMITTENT PROBLEM IS PRESENT)

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