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.
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| 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:
Motor Control Relay Stuck ON (Fr Shade) (B234A)
DESCRIPTION This DTC will be stored if the operation of the front roof sunshade is suspended and a pulse input of 10 Hz or more is detected when the motor relay is off. DTC No. Detection Item DTC Detection Condition Trouble Area B234A Motor Control Relay Stuck ON (Fr Shade) Position
Windshield Deicer does not Operate
DESCRIPTION When the front wiper deicer switch is operated, the operation signal is transmitted to the air conditioning amplifier assembly directly. When the air conditioning amplifier assembly receives the signal, it turns on the DEICER relay to operate the windshield deicer system. WIRING DIAGRAM
