Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001AULS |
Model Year Start: 2019 |
Model: GR Corolla |
Prod Date Range: [06/2018 - 09/2022] |
Title: LIGHTING (EXT): LIGHTING SYSTEM (for Gasoline Model with AFS): U1000; CAN Communication Failure (Message Registry); 2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022] |
DTC
|
U1000
|
CAN Communication Failure (Message Registry)
|
DESCRIPTION
The headlight ECU sub-assembly LH or headlight ECU sub-assembly RH stores this DTC if it detects an internal malfunction related to the CAN communication system.
AFS
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
DTC Output from
|
U1000
|
CAN Communication Failure (Message Registry)
|
Detection condition:
-
The engine switch is on (IG).
Malfunction status:
-
CAN communication failure
|
Headlight ECU sub-assembly LH
|
AFS
|
AFS (Sub)
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
DTC Output from
|
U1000
|
CAN Communication Failure (Message Registry)
|
Detection condition:
-
The engine switch is on (IG).
Malfunction status:
-
CAN communication failure
|
Headlight ECU sub-assembly RH
|
AFS (Sub)
|
CAUTION / NOTICE / HINT
NOTICE:
-
If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.
Click here
-
When replacing the headlight ECU sub-assembly LH, always replace it with a new one. If a headlight ECU sub-assembly LH which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
PROCEDURE
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / AFS or AFS (Sub) / Trouble Codes.
(e) Clear the DTCs.
Body Electrical > AFS > Clear DTCs
Body Electrical > AFS (Sub) > Clear DTCs
NEXT
|
|
|
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / AFS or AFS (Sub) / Trouble Codes.
(e) Check for DTCs.
Body Electrical > AFS > Trouble Codes
Body Electrical > AFS (Sub) > Trouble Codes
OK:
DTC U1000 is not output.
Result
|
Proceed to
|
OK
|
A
|
NG (DTC output from headlight ECU sub-assembly LH)
|
B
|
NG (DTC output from headlight ECU sub-assembly RH)
|
C
|
|