Toyota Camry owners & service manuals

Toyota Camry (XV70): Lost Communication with ECM / PCM "A" (U0100,U0125,U0126,U0129,U0142)

Toyota Camry Repair Manual XV70 (2018-2024) / Audio, Visual, Telematics / Park Assist / Monitoring / Blind Spot Monitor System / Lost Communication with ECM / PCM "A" (U0100,U0125,U0126,U0129,U0142)

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.

Blind Spot Monitor Master

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

Blind Spot Monitor Slave

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

CAUTION / NOTICE / HINT

NOTICE:

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

PROCEDURE

1.

CHECK DTC

(a) Turn the engine switch off.

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

(c) Recheck for DTCs and check if the same DTC is output again.

Body Electrical > Blind Spot Monitor Master > Trouble Codes Body Electrical > Blind Spot Monitor Slave > Trouble Codes

Result

Proceed to

DTCs are output

A

No DTCs are output

B

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 the inspection again, even though the DTC was not output when rechecking for DTCs.

    Click here

A

GO TO CAN COMMUNICATION SYSTEM

B

USE SIMULATION METHOD TO CHECK

    READ NEXT:

     Lost Communication with Blind Spot Monitor Slave Module (U0232)

    DESCRIPTION This DTC is stored when the blind spot monitor sensor RH judges that there is a communication problem with the blind spot monitor sensor LH. DTC No. Detection Item DTC Detecti

     Lost Communication with Blind Spot Monitor Master Module (U0233)

    DESCRIPTION This DTC is stored when the blind spot monitor sensor LH judges that there is a communication problem with the blind spot monitor sensor RH. DTC No. Detection Item DTC Detecti

     Software Incompatibility with Body Control Module "B" (U1331)

    DESCRIPTION This DTC is stored when the destination information of the main body ECU (multiplex network body ECU) does not match that of the blind spot monitor sensors. Blind Spot Monitor Master

    SEE MORE:

     Brake System Control Module "A" System Voltage System Voltage Low (C137BA2)

    DESCRIPTION If a malfunction is detected in the power supply circuit, the skid control ECU (brake actuator assembly) stores this DTC and the fail-safe function prohibits ABS operation. This DTC is stored when the +BS terminal voltage meets one of the DTC detection conditions due to a malfunction i

     When the TRAC/VSC systems are operating - Driving assist systems

    The slip indicator light will flash while the TRAC/VSC systems are operating. Disabling the TRAC system If the vehicle gets stuck in mud, dirt or snow, the TRAC system may reduce power from the engine to the wheels. Pressing to turn the system off may make it easier for you to rock the vehi

    © 2023-2024 Copyright www.tocamry.com