Lexus ES: CAN Communication Failure (Message Registry) (U1000)
DESCRIPTION
If DTC U1000 is stored frequently, duplicate the problem symptoms and perform troubleshooting 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.
Chassis > Circumference Monitoring Camera Control Module > Clear DTCs Chassis > Rear Camera > Clear DTCs(b) Check for DTCs.
Chassis > Circumference Monitoring Camera Control Module > Trouble Codes Chassis > Rear Camera > Trouble Codes| Result | Proceed to |
|---|---|
| No DTCs are output | A |
| DTC U1000 is output ("Panoramic View Monitor") | B |
| DTC U1000 is output ("Parking Assist Camera") | C |
HINT:
If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even if the DTC was not output when rechecking for DTCs.
Click here .gif)
| A |  | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE PARKING ASSIST ECU |
| C | | REPLACE REAR TELEVISION CAMERA ASSEMBLY |
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
BSM Buzzer Sound Request Signal Malfunction (C2A5C)
DESCRIPTION This DTC is stored when the rear television camera assembly receives an invalid communication signal from the blind spot monitor sensor RH. DTC No. Detection Item DTC Detection Cond
SEE MORE:
Camshaft Position "B" - Timing Over-Advanced or System Performance Bank 1 (P001400,P001500)
DESCRIPTION Refer to DTC P001313. Click here DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note P001400 Camshaft Position "B" - Timing Over-Advanced or System Performance Bank 1 Exhaust valve timing is stuck at a certain value when in the advance ran
Installation
INSTALLATION CAUTION / NOTICE / HINT NOTICE: This procedure includes the installation of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts. Click here PROCEDURE 1. INSTALL VACUUM PUMP ASSEMBLY (a) When reusing the vacuum pump assembly: (1) Install
