PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM (for Gasoline Model (w/o Safe Exit Assist Function)): U0100,...,U0142; Lost Communication with ECM / PCM "A"; 2019 - 2023 MY Corolla Corolla Hatchback GR Corolla [06/2018

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM100000001D0NE
Model Year Start: 2019	Model: GR Corolla	Prod Date Range: [06/2018 - 11/2022]
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM (for Gasoline Model (w/o Safe Exit Assist Function)): U0100,...,U0142; Lost Communication with ECM / PCM "A"; 2019 - 2023 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 11/2022]

DTC

U0100

Lost Communication with ECM / PCM "A"

DTC

U0125

Lost Communication with Yaw Rate Sensor Module

DTC

U0126

Lost Communication with Steering Angle Sensor Module

DTC

U0129

Lost Communication with Brake System Control Module

DTC

U0142

Lost Communication with Body Control Module "B"

DESCRIPTION

These DTCs are stored if there is a malfunction in the CAN communication system connected to the blind spot monitor sensor.

HINT:

If CAN communication system DTCs are stored, they may also be stored for other systems.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
U0100	Lost Communication with ECM / PCM "A"	Lost communication with ECM	CAN communication system
U0125	Lost Communication with Yaw Rate Sensor Module	Lost communication with airbag sensor assembly	CAN communication system
U0126	Lost Communication with Steering Angle Sensor Module	Lost communication with steering sensor	CAN communication system
U0129	Lost Communication with Brake System Control Module	Lost communication with brake system	CAN communication system
U0142	Lost Communication with Body Control Module "B"	Lost communication with main body ECU	CAN communication system

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
U0100	Lost Communication with ECM / PCM "A"	Lost communication with ECM	CAN communication system
U0125	Lost Communication with Yaw Rate Sensor Module	Lost communication with airbag sensor assembly	CAN communication system
U0126	Lost Communication with Steering Angle Sensor Module	Lost communication with steering sensor	CAN communication system
U0129	Lost Communication with Brake System Control Module	Lost communication with brake system	CAN communication system
U0142	Lost Communication with Body Control Module "B"	Lost communication with main body ECU	CAN communication system

NOTICE:

When checking for DTCs, make sure that the blind spot monitor system is turned on.

CHECK DTC

(a) Turn the engine switch off.

(b) Turn the engine switch on (IG).

Result	Proceed to
Blind Spot Monitor Master DTCs including DTC U0232 are output	A
Blind Spot Monitor Master DTCs other than DTC U0232 are output	B
No DTCs are output	C

HINT:

If CAN communication system DTCs are stored, they may also be stored for other systems.
If the CAN communication system has been inspected and repaired, the DTCs will not be output when rechecking for DTCs.
If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.
Click here

GO TO DTC U0232

GO TO CAN COMMUNICATION SYSTEM