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.
| Transmitting ECU (Transmitter) | Receiving ECU | Signals | Communication |
| Rain Sensor | Main 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 ECU | Main 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 ECU | Front Light ECU | Washer motor operation signal | BEAN |
| Combination Meter ECU | Main Body ECU LH (Cowl Side J/B LH) | Vehicle speed signal | BEAN |
| Combination Meter ECU | Rain Sensor | Vehicle speed signal | BEAN |
| Combination Switch ECU | Rain Sensor | Wiper & washer switch signal | BEAN |
| ECM | Main 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 ECU | Rain Sensor | PUSH switch signal | BEAN |
| Front Light ECU | Combination 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.