Toyota Yaris: Pre-collision System / Lost Communication with ECM/PCM "A" Missing Message (U010087,U010187,U012687,U012987,U015587)

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Vehicle Interior / Pre-collision / Pre-collision System / Lost Communication with ECM/PCM "A" Missing Message (U010087,U010187,U012687,U012987,U015587)

DESCRIPTION

The following DTCs are stored when there is a communication malfunction between the millimeter wave radar sensor and each sensor or ECU.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U010087

Lost Communication with ECM/PCM "A" Missing Message

When the ignition switch is ON for 3 seconds or more, an ECM communication malfunction continues for approximately 3 seconds or more.

CAN communication system

U010187

Lost Communication with TCM Missing Message

When the ignition switch is ON for 3 seconds or more, a ECM communication malfunction continues for approximately 8 seconds or more.

CAN communication system

U012687

Lost Communication with Steering Angle Sensor Module Missing Message

When the ignition switch is ON for 3 seconds or more, a steering sensor communication malfunction continues for approximately 1 second or more.

CAN communication system

U012987

Lost Communication with Brake System Control Module Missing Message

When the ignition switch is ON for 3 seconds or more, a communication error between the skid control ECU (brake actuator assembly) and the millimeter wave radar sensor assembly is detected for approximately 1 second or more.

CAN communication system

U015587

Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message

When the ignition switch is ON for 3 seconds or more, a combination meter assembly communication malfunction continues for 8 seconds or more.

CAN communication system

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Pre-Collision System > Clear DTCs
NEXT

2.

CHECK FOR DTCs

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

HINT:

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

(b) Check for DTCs.

Body Electrical > Pre-Collision System > Trouble Codes

Result

Proceed to

U010087, U010187, U012687, U012987 or U015587 is output

A

DTCs are not output

B

None of the above conditions are met

C

A

GO TO CAN COMMUNICATION SYSTEM

B

USE SIMULATION METHOD TO CHECK

C

GO TO DTC CHART

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