Toyota Corolla Cross: System Diagram
SYSTEM DIAGRAM

Communication Table
Transmitting ECU | Receiving ECU |
Signal | Communication Method |
Multiplex Network Master Switch Assembly |
Power Window Regulator Motor Assembly (for Driver Door) |
Power window auto up and down signal |
LIN |
- Power Window Regulator Motor Assembly (for Front Passenger Door)
- Power Window Regulator Motor Assembly (for Rear RH Door)
- Power Window Regulator Motor Assembly (for Rear LH Door)
| Power window remote up and down signal |
LIN |
Main Body ECU (Multiplex Network Body ECU) |
- Power Window Regulator Motor Assembly (for Driver Door)
- Power Window Regulator Motor Assembly (for Front Passenger Door)
- Power Window Regulator Motor Assembly (for Rear RH Door)
- Power Window Regulator Motor Assembly (for Rear LH Door)
| Power window operation permission signal |
LIN |
Certification ECU (Smart Key ECU Assembly) |
Main Body ECU (Multiplex Network Body ECU) |
Wireless power window operation signal |
CAN |
Main Body ECU (Multiplex Network Body ECU) |
Combination Meter Assembly | Window open warning request signal |
CAN |
READ NEXT:
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the power window control system.
*: Use the GTS.
PROCEDURE
1. VEHICLE BROUGHT TO WORKSHOP
NEXT
OPERATION CHECK CHECK WINDOW LOCK FUNCTION HINT:
Before performing the window lock switch operation check, make sure that the window lock switch is off (the switch is not pushed in).
(a) Turn the w
CUSTOMIZE PARAMETERS CUSTOMIZE POWER WINDOW CONTROL SYSTEM
NOTICE:
When the customer requests a change in a function, first make sure that the function can be customized.
Be sure to make a note
SEE MORE:
TERMINALS OF ECU CHECK MULTIPLEX NETWORK DOOR ECU
(a) Disconnect the U39, U40, U41 and U42 multiplex network door ECU connectors.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) Terminal Description
Condition Specified Condit
DESCRIPTION
DTC No. Detection Item
DTC Detection Condition Trouble Area
Warning Indicate Test Mode / Check Mode
B000412 Driver Knee Bolster Deployment Control Circuit Short to Battery
One of the following conditions is met:
The airbag ECU assembly detec