Lexus NX: CAN Communication Failure (Message Registry) (U1000)
Lexus NX Service Manual / Audio & Visual & Telematics / Park Assist / Monitoring / Panoramic View Monitor System / CAN Communication Failure (Message Registry) (U1000)
DESCRIPTION
If DTC U1000 is stored frequently, duplicate the problem symptoms and perform the inspection again even if the DTC is not output when rechecking for DTCs.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U1000 | CAN Communication Failure (Message Registry) | ECU malfunction | Parking assist ECU |
PROCEDURE
| 1. | CHECK FOR DTC |
(a) Clear the DTCs.
Click here .gif)
(b) Check for DTCs.
Click here
OK:
DTC U1000 is not output.
HINT:
If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again, even though the DTC was not output when rechecking for DTCs.
Click here
| OK | .gif) | USE SIMULATION METHOD TO CHECK |
| NG | | REPLACE PARKING ASSIST ECU |
READ NEXT:
"CHK" message(s) are displayed on the SIGNAL CHECK screen.
DESCRIPTION On the SIGNAL CHECK screen, it is possible to check if the signals sent to the parking assist ECU are normal. Click here HINT:
On the SIGNAL CHECK screen, "OK" (blue) is displayed for
ECU Power Source Circuit
DESCRIPTION This circuit is the power source circuit to operate the parking assist ECU. The parking assist ECU controls the panoramic view monitor system. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTIC
Image from Camera for Panoramic View Monitor is Abnormal
DESCRIPTION The display signal from the rear television camera assembly is transmitted to the multi-display assembly via the parking assist ECU. WIRING DIAGRAM w/o Seat Memory w/ Seat Memory CAUTION
SEE MORE:
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) Intelligent clearance sonar system data and Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and to repair them. CHECK DLC3 (a) C
Driver Side Door ECU Communication Stop (B2321)
DESCRIPTION This DTC is stored when LIN communication between the front power window regulator motor assembly LH and main body ECU (multiplex network body ECU) stops for 10 seconds or more. DTC No. Detection Item DTC Detection Condition Trouble Area B2321 Driver Side Door ECU Communic
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