Lexus NX: CAN Communication Failure (Message Registry) (U1000)
Lexus NX Service Manual / Vehicle Exterior / Lighting (ext) / Lighting System (for Triple Beam Headlight) / CAN Communication Failure (Message Registry) (U1000)
DESCRIPTION
This DTC is output when an internal malfunction of the CAN communication-related ECU is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U1000 | CAN Communication Failure (Message Registry) | A headlight ECU sub-assembly LH CAN communication function malfunction is detected | Headlight ECU sub-assembly LH |
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 .gif)
PROCEDURE
| 1. | CHECK FOR DTC |
(a) Turn the power switch on (IG).
(b) Check for DTCs.
Click here
OK:
DTC U1000 is not output.
| OK | .gif) | USE SIMULATION METHOD TO CHECK |
| NG | | REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH |
READ NEXT:
Turn Signal Switch Circuit
DESCRIPTION The combination meter receives the turn signal switch information and controls the turn signal lights. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: When replacing the combination meter
Headlight Dimmer Switch Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) receives light control switch signals, dimmer switch signals, fog light switch signals from the headlight dimmer switch. WIRING DIAGRAM CAUT
Daytime Running Light Relay Circuit
DESCRIPTION The illumination of the daytime running light (clearance light assembly) or clearance light is controlled by the headlight ECU sub-assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
SEE MORE:
Open in Occupant Classification ECU Battery Positive Line (B1794)
DESCRIPTION DTC B1794 is stored when a malfunction is detected in the occupant detection ECU. DTC No. Detection Item DTC Detection Condition Trouble Area B1794 Open in Occupant Classification ECU Battery Positive Line One of the following conditions is met:
Occupant detection ECU
Installation
INSTALLATION PROCEDURE 1. INSTALL CONSOLE BOX ILLUMINATION LIGHT ASSEMBLY (w/ Wireless Charger) (a) Attach the 2 claws to install the console box illumination light assembly. (b) Connect the connector. 2. INSTALL REAR CONSOLE END PANEL SUB-ASSEMBLY (w/ Wireless Charger) Click here
© 2016-2026 Copyright www.lexunx.com
