PARK ASSIST / MONITORING: PANORAMIC VIEW MONITOR SYSTEM: U0073,U0100,U0126,U0129,U0140,U0163,U0265,U1110; Control Module Communication Bus Off; 2018 - 2020 MY Sienna [11/2017

Last Modified: 04-05-2023	6.11:8.1.0	Doc ID: RM1000000018J5I
Model Year Start: 2018	Model: Sienna	Prod Date Range: [11/2017 - ]
Title: PARK ASSIST / MONITORING: PANORAMIC VIEW MONITOR SYSTEM: U0073,U0100,U0126,U0129,U0140,U0163,U0265,U1110; Control Module Communication Bus Off; 2018 - 2020 MY Sienna [11/2017 - ]

DTC

U0073

Control Module Communication Bus Off

DTC

U0100

Lost Communication With ECM/PCM "A"

DTC

U0126

Lost Communication with Steering Angle Sensor Module

DTC

U0129

Lost Communication with Brake System Control Module

DTC

U0140

Lost Communication with Body Control Module

DTC

U0163

Lost Communication with Navigation Control Module

DTC

U0265

Lost Communication with Image Processing Sensor A

DTC

U1110

Lost Communication with Clearance Sonar Module

DESCRIPTION

These DTCs are stored if there is a malfunction in the CAN communication system connected to the parking assist ECU.

HINT:

If CAN communication system DTCs are stored, they may also be stored in other systems.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
U0073	Control Module Communication Bus Off	Control module communication bus off	CAN communication system
U0100	Lost Communication With ECM/PCM "A"	Lost Communication with ECM	CAN communication system
U0126	Lost Communication with Steering Angle Sensor Module	Lost communication with steering sensor	CAN communication system
U0129	Lost Communication with Brake System Control Module	Lost communication with skid control ECU	CAN communication system
U0140	Lost Communication with Body Control Module	Lost communication with main body ECU (multiplex network body ECU)	CAN communication system
U0163	Lost Communication with Navigation Control Module	Lost communication with radio and display receiver assembly	CAN communication system
U0265	Lost Communication with Image Processing Sensor A	Lost Communication with rear television camera assembly	CAN communication system
U1110	Lost Communication with Clearance Sonar Module	Lost communication with clearance warning ECU assembly	CAN communication system

1.	CHECK DTC OUTPUT

(a) Clear the DTCs.

Click here

(b) Recheck for DTCs and check that no DTCs are output.

Click here

HINT:

If CAN communication system DTCs are stored, they may also be stored in other systems.
If the CAN communication system has been inspected and repaired in other systems, the DTCs will not be output when rechecking for DTCs.
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

Result	Proceed to
DTCs are output	A
No DTCs are output	B