Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM10000000271X1
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 -           ]
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Knobless Radio and Display Receiver): U100049; CAN Register Fixing Internal Electronic Failure; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]

DTC

U100049

CAN Register Fixing Internal Electronic Failure

DESCRIPTION

These DTCs are stored when the radio and display receiver assembly detects a malfunction in the CAN communication circuit.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

Priority

U100049

CAN Register Fixing Internal Electronic Failure
  • A CAN bus connection malfunction is detected
  • CAN bus off is detected
  • CAN bus connection error

(2 trip detection logic)
  • CAN communication system
  • Radio and display receiver assembly

Navigation System

B

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Body Electrical > Navigation System > Clear DTCs

(b) Turn the ignition switch off.

(c) Turn the ignition switch to ON and wait for 45 seconds or more.

(d) Check for DTCs.

Body Electrical > Navigation System > Trouble Codes

Result

Proceed to

DTCs are not output

A

U100049 is output

B
A

GO TO HOW TO PROCEED WITH TROUBLESHOOTING

B

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; AUDIO / VIDEO: RADIO RECEIVER: REMOVAL 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; AUDIO / VIDEO: RADIO RECEIVER: REMOVAL