CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM (for HV Model): U010487,U012287,U029387; Lost Communication with Cruise Control Module Missing Message; 2020 - 2022 MY Corolla Corolla HV [01/2019

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM100000001GZ6V
Model Year Start: 2020	Model: Corolla	Prod Date Range: [01/2019 - 09/2022]
Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM (for HV Model): U010487,U012287,U029387; Lost Communication with Cruise Control Module Missing Message; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]

DTC

U010487

Lost Communication with Cruise Control Module Missing Message

DTC

U012287

Lost Communication with Vehicle Dynamics Control Module Missing Message

DTC

U029387

Lost Communication with Hybrid Powertrain Control Module Missing Message

DESCRIPTION

The hybrid vehicle control ECU 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
U010487	Lost Communication with Cruise Control Module Missing Message	When the power switch is on (IG) and the dynamic radar cruise control system is operating, a communication malfunction between the millimeter wave radar sensor assembly and hybrid vehicle control ECU is detected for approximately 1 second or more.	CAN communication system Millimeter wave radar sensor assembly Hybrid vehicle control ECU	Cruise Control
U012287	Lost Communication with Vehicle Dynamics Control Module Missing Message	When the power switch is on (IG) and the dynamic radar cruise control system is operating, a communication malfunction between the skid control ECU (brake booster with master cylinder assembly) and hybrid vehicle control ECU is detected for approximately 2.6 seconds or more.	CAN communication system Skid control ECU (brake booster with master cylinder assembly) Hybrid vehicle control ECU	Cruise Control
U029387	Lost Communication with Hybrid Powertrain Control Module Missing Message	When the dynamic radar cruise control system is operating, a communication malfunction between the skid control ECU (brake booster with master cylinder assembly) and hybrid vehicle control ECU is detected for approximately 1 second or more.	CAN communication system Skid control ECU (brake booster with master cylinder assembly) Hybrid vehicle control ECU	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 U010487, U012287 and U029387 are not output	A
DTC U010487, U012287 or U029387 is output	B