Toyota Camry owners & service manuals

Toyota Camry (XV70): Lost Communication with ECM/PCM "A" Missing Message (U010087,U012587,U012687,U012987,U014087)

Toyota Camry Repair Manual XV70 (2018-2024) / Engine, Hybrid System / Cruise Control / Front Camera System / Lost Communication with ECM/PCM "A" Missing Message (U010087,U012587,U012687,U012987,U014087)

DESCRIPTION

When a malfunction is detected between various ECUs and sensors, these DTCs are stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U010087

Lost Communication with ECM/PCM "A" Missing Message

3 seconds after the ignition switch is turned to ON, while the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the ECM and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U012587

Lost Communication with Multi-axis Acceleration Sensor Module Missing Message

3 seconds after the ignition switch is turned to ON, while the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the airbag sensor assembly and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U012687

Lost Communication with Steering Angle Sensor Module Missing Message

3 seconds after the ignition switch is turned to ON, a communication error between the steering sensor and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U012987

Lost Communication with Brake System Control Module Missing Message

3 seconds after the ignition switch is turned to ON, a communication error between the skid control ECU (brake actuator assembly) and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U014087

Lost Communication with Body Control Module Missing Message

3 seconds after the ignition switch is turned to ON, a communication error between the main body ECU (multiplex network body ECU) and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

PROCEDURE

1.

CHECK FOR DTCs

(a) Clear the DTCs.

Chassis > Front Recognition Camera > Clear DTCs

(b) Make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the system cannot detect the malfunction.

(c) Check for DTCs.

Chassis > Front Recognition Camera > Trouble Codes

Result

Proceed to

CAN communication system DTC is not output

A

CAN communication system DTC is output

B

A

USE SIMULATION METHOD TO CHECK

B

GO TO CAN COMMUNICATION SYSTEM

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