Toyota Corolla Cross: Lost Communication with Brake System Control Module "A" Missing Message (U012987)
DESCRIPTION
The tire pressure warning ECU and receiver receives signals from the skid control
ECU (brake actuator assembly) via the CAN communication system.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
U012987
|
Lost Communication with Brake System Control Module "A" Missing Message
|
Lost communication with skid control ECU (brake actuator assembly)
|
- CAN communication system
- Skid control ECU (brake actuator assembly)
|
PROCEDURE
(a) Check for DTCs.
Chassis > Tire Pressure Monitor > Trouble Codes
Result
|
Proceed to
|
U012987 is output
|
A
|
DTCs are not output
|
B
|
A |
|
GO TO CAN COMMUNICATION SYSTEM
- for Gasoline Model: Click here
- for HEV Model: Click here
|
B |
|
USE SIMULATION METHOD TO CHECK
|
READ NEXT:
DESCRIPTION
The switch circuit inside the combination meter assembly turns on and off according
to the steering pad switch assembly operation.
WIRING DIAGRAM
PROCEDURE
1.
DESCRIPTION
If the tire pressure warning ECU and receiver detects any problems, the tire
pressure warning light blinks for 1 minute then illuminates, and tire pressure monitoring
is disabled at t
DESCRIPTION
The tire pressure warning ECU and receiver identifies the tire position for each
tire pressure warning valve and transmitter according to the wheel speed signals
from the skid control
SEE MORE:
DESCRIPTION
When a malfunction has occurred in the linear solenoid power source circuit,
the 4WD ECU assembly stores DTC C120C.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
C120C
Linear Solenoid Power Supply S
CAUTION / NOTICE / HINT
NOTICE:
Depending on the parts that are replaced during vehicle inspection
or maintenance, performing initialization, registration or calibration may be needed.
Click here
PROCEDURE
1.
CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY
(a) Che