Lexus NX: CAN Communication Failure (Message Registry) (U1000)
DESCRIPTION
When the clearance warning ECU assembly determines that the CAN communication circuit is malfunctioning during self-diagnosis, DTC U1000 is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U1000 | CAN Communication Failure (Message Registry) | CAN communication circuit malfunction is detected | Clearance warning ECU assembly |
PROCEDURE
| 1. | CHECK FOR DTC |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
HINT:
After turning the power switch from off to on (IG), wait 10 seconds or more before checking for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes(b) Clear the DTCs according to the screen on the Techstream.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs(c) Recheck for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble CodesOK:
DTC U1000 is not output.
HINT:
- If DTC U1000 is not output after clearing the DTCs, an intermittent CAN communication circuit malfunction is suspected.
-
If DTC U1000 is output frequently, replace the clearance warning ECU assembly, even though the DTC was not output when rechecking for DTCs.
Click here
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| OK | .gif) | USE SIMULATION METHOD TO CHECK |
| NG | | REPLACE CLEARANCE WARNING ECU ASSEMBLY |
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Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems aft
Parts Location
PARTS LOCATION ILLUSTRATION *A w/ Panoramic View Monitor System *B w/ Parking Assist Monitor System *1 FRONT CORNER ULTRASONIC SENSOR (FR SENSOR) *2 FRONT CENTER ULTRASONIC SENSOR
SEE MORE:
Components
COMPONENTS ILLUSTRATION *1 CENTER HOOD CUSHION *2 HOOD LOCK ASSEMBLY *3 HOOD LOCK CONTROL CABLE ASSEMBLY *4 HOOD TO FRONT FENDER SEAL LH *5 RADIATOR SUPPORT OPENING COVER - - N*m (kgf*cm, ft.*lbf): Specified torque MP grease ILLUSTRATION *1 COWL SID
Front Occupant Classification Sensor LH Circuit Malfunction (B1780)
DESCRIPTION The front occupant classification sensor LH circuit consists of the occupant detection ECU and front occupant classification sensor LH. DTC B1780 is stored when a malfunction is detected in the front occupant classification sensor LH circuit. DTC No. Detection Item DTC Detection C
