CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM (for M20A-FKS): U010087,U010487,U012287; Lost Communication with ECM/PCM "A" Missing Message; 2020 - 2022 MY Corolla Corolla Hatchback [01/2019

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM100000001H08H
Model Year Start: 2020	Model: Corolla Hatchback	Prod Date Range: [01/2019 - 09/2022]
Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM (for M20A-FKS): U010087,U010487,U012287; Lost Communication with ECM/PCM "A" Missing Message; 2020 - 2022 MY Corolla Corolla Hatchback [01/2019 - 09/2022]

DTC

U010087

Lost Communication with ECM/PCM "A" Missing Message

DTC

U010487

Lost Communication with Cruise Control Module Missing Message

DTC

U012287

Lost Communication with Vehicle Dynamics Control Module Missing Message

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	MIL	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 Skid control ECU (brake actuator assembly) ECM	Does not come on	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 millimeter wave radar sensor assembly and ECM is detected for approximately 1 second or more.	CAN communication system Millimeter wave radar sensor assembly ECM	Does not come on	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 2.6 seconds or more.	CAN communication system Skid control ECU (brake actuator assembly) ECM	Does not come on	Cruise Control

1.	CHECK FOR DTCs

(a) Clear the 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.

Result	Proceed to
DTC U010087, U010487 and U012287 are not output	A
DTC U010087, U010487 or U012287 is output	B