Toyota Camry owners & service manuals

Toyota Camry (XV70): Lost Communication With ECM/PCM "A" Missing Message (U010087,U010487,U012287)

Toyota Camry Repair Manual XV70 (2018-2024) / Engine, Hybrid System / Cruise Control / Dynamic Radar Cruise Control System / Lost Communication With ECM/PCM "A" Missing Message (U010087,U010487,U012287)

DESCRIPTION

The ECM communicates with each sensor and ECU via CAN communication.

If any malfunction is detected in a CAN communication circuit, one or more CAN communication system DTCs are stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

U010087

Lost Communication With ECM/PCM "A" Missing Message

When the dynamic radar cruise control system is operating, a communication malfunction between the skid control ECU (brake actuator assembly) and ECM is detected for approximately 1 second or more.

CAN communication system

Cruise Control

U010487

Lost Communication with Cruise Control Module Missing Message

When the ignition switch is ON and the dynamic radar cruise control system is operating, a communication malfunction between the forward recognition camera and ECM is detected for approximately 1 second or more.

CAN communication system

Cruise Control

U012287

Lost Communication with Vehicle Dynamics Control Module Missing Message

When the ignition switch is ON and the dynamic radar cruise control system is operating, a communication malfunction between the skid control ECU (brake actuator assembly) and ECM is detected for approximately 3 seconds or more.

CAN communication system

Cruise Control

PROCEDURE

1.

CHECK FOR DTCs (Radar Cruise1)

(a) Clear the DTCs.

Powertrain > Cruise Control > 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.

Powertrain > Cruise Control > 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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