Lexus IS250 IS220d GSE20 ALE20 - WIPER AND WASHER


WIPER AND WASHER SYSTEM - SYSTEM DIAGRAM

WIPER AND WASHER SYSTEM

Various switches or sensors are shown as being inputs for the different systems mentioned in the section. Where direct electrical connections do not exist between components, signals may be carried across the different networks (BEAN, CAN) that exist on the vehicle. If a signal needs to travel from the CAN network to the BEAN network, or between different BEAN networks, the Gateway ECU allows the signal to travel between these different networks. Some of these different signals can be confirmed or inspected using the intelligent tester.

The following system diagrams are intended to show the concept of operation, and may not precisely reflect the construction of the system on the vehicle.

Wiper And Washer System - System Diagram. WIPER AND WASHER. Lexus IS250 IS220d GSE20 ALE20

Wiper And Washer System - System Diagram. WIPER AND WASHER. Lexus IS250 IS220d GSE20 ALE20

Input and output signals of each ECU:
Transmitting ECU
(Transmitter)
Receiving ECUSignalsCommunication
Rain SensorMain Body ECU LH (Cowl Side J/B LH)
HI continuous operation command signal
LO continuous operation command signal
LO single operation command signal
Manual intermittent operation command signal
Wipe angle variable demand signal
BEAN
Combination Switch ECUMain Body ECU LH (Cowl Side J/B LH)
Wiper switch INT signal
Wiper switch LO signal
Wiper switch HI signal
Wiper switch AUTO position signal
Washer switch signal
Wiper switch MIST signal
Wiper adjusting volume signal
BEAN
Combination Switch ECUFront Light ECU
Washer motor operation signal
BEAN
Combination Meter ECUMain Body ECU LH (Cowl Side J/B LH)
Vehicle speed signal
BEAN
Combination Meter ECURain Sensor
Vehicle speed signal
BEAN
Combination Switch ECURain Sensor
Wiper & washer switch signal
BEAN
ECMMain Body ECU LH (Cowl Side J/B LH)
Shift position P signal
Shift position N signal
CAN - BEAN
Main Body ECU RH (Cowl Side J/B RH)Main Body ECU LH (Cowl Side J/B LH)
Parking brake switch signal
Stop light ON command signal
BEAN
Main Body ECU RH (Cowl Side J/B RH)Combination Switch ECU
Engine switch signal
BEAN
Main Body ECU RH (Cowl Side J/B RH)Rain Sensor
Display dimmer signal
BEAN
Main Body ECU LH (Cowl Side J/B LH)Rain Sensor
Wiper motor position signal
Wiper blade position signal
BEAN
Steering Lock ECURain Sensor
PUSH switch signal
BEAN
Front Light ECUCombination Meter ECU
Washer level signal
BEAN
  • HINT:
Wiper operation is controlled by the main body ECU LH (cowl side J/B LH).
The rain sensor controls the auto wiper function.