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

PROCEDURE

1.

CHECK FOR DTCs

(a) Clear the DTCs.

Powertrain > Radar Cruise1 > 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 > Radar Cruise1 > Trouble Codes

Result

Proceed to

DTC U010487, U012287 and U029387 are not output

A

DTC U010487, U012287 or U029387 is output

B

A

USE SIMULATION METHOD TO CHECK

B

GO TO CAN COMMUNICATION SYSTEM