Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Lost Communication with Brake System Control Module "A" Missing Message (U012987)

Toyota Corolla Cross (2022-2025) Service Manual / Suspension / Tire Pressure Monitoring / Tire Pressure Warning System / 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

1.

CHECK FOR DTC

(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:

     Tire Pressure Warning Reset Switch Circuit

    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.

     Tire Pressure Warning Light Circuit

    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

     Tire Position Not Identified

    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

    INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION) Procedure Part Name Code 1 TIMING CHAIN COVER OIL SEAL 11301C - - 2 CRANKSHAFT PULLEY ASSEMBLY 13470 - - 3 INSPECT FOR ENGINE OIL LE

     Utility vehicle precautions

    This vehicle belongs to the utility vehicle class, which has higher ground clearance and narrower tread in relation to the height of its center of gravity. Utility vehicle feature Specific design characteristics give it a higher center of gravity than ordinary passenger cars. This vehicle desig

    © 2020-2025 Copyright www.tcorollacross.com PT NL