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

GO TO CAN COMMUNICATION SYSTEM

for Gasoline Model: Click here
for HEV Model: Click here

USE SIMULATION METHOD TO CHECK

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Installation

INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION) Procedure Part Name Code 1 NO. 3 ANTENNA CORD SUB-ASSEMBLY 86101D - - - N*m (kgf*c

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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

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

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