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:
INSTALLATION
CAUTION / NOTICE / HINT
COMPONENTS (INSTALLATION)
Procedure
Part Name Code
1
NO. 3 ANTENNA CORD SUB-ASSEMBLY
86101D
-
-
-
N*m (kgf*c
DESCRIPTION
The ABS solenoid relay and solenoid valves are built into the
brake actuator assembly.
The front solenoid valve RH controls the brake fluid pressure
of the front wheel cylinder RH of the vehicle.
When this DTC is stored, the fail-safe function operates and
the ABS solenoid relay