HEADUP DISPLAY SYSTEM, Diagnostic DTC:U0100, U0142, U023A, U1104

DTC Code	DTC Name
U0100	Lost Communication with ECM / PCM "A"
U0142	Lost Communication With Body Control Module "B"
U023A	Lost Communication With Image Processing Module "A"
U1104	Lost Communication with Driving Support ECU

DESCRIPTION

U0100: The meter mirror sub-assembly receives signals from the ECM via CAN communication.
U0142: The meter mirror sub-assembly receives signals from the main body ECU (multiplex network body ECU) via CAN communication.
U023A: The meter mirror sub-assembly receives signals from the forward recognition camera via CAN communication.
U1104: The meter mirror sub-assembly receives signals from the driving support ECU assembly via CAN communication.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory
U0100	Lost Communication with ECM / PCM "A"	DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher Malfunction Status: Lost communication with ECM Malfunction Duration: 3.6 seconds or more	ECM CAN communication system Meter mirror sub-assembly	DTC stored
U0142	Lost Communication With Body Control Module "B"	DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher Malfunction Status: Lost communication with main body ECU (multiplex network body ECU) Malfunction Duration: 5 seconds or more	Main body ECU (multiplex network body ECU) CAN communication system Meter mirror sub-assembly	DTC stored
U023A	Lost Communication With Image Processing Module "A"	DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher Malfunction Status: Lost communication with forward recognition camera Malfunction Duration: 5 seconds or more	Forward recognition camera CAN communication system Meter mirror sub-assembly	DTC stored
U1104	Lost Communication with Driving Support ECU	DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher Malfunction Status: Lost communication with driving support ECU assembly Malfunction Duration: 5 seconds or more	Driving support ECU assembly CAN communication system Meter mirror sub-assembly	DTC stored

PROCEDURE

CLEAR DTC

Clear the DTCs.

Body Electrical > Head Up Display > Clear DTCs

Result

Proceed to
NEXT

CHECK FOR DTC

Check if CAN communication DTCs are output.

Body Electrical > Head Up Display > Trouble Codes

Tech Tips

If CAN communication system malfunction DTCs are output, they may also be output for other systems.
If the CAN communication system has been inspected and repaired in other systems, the DTC will not be output when rechecking for DTCs.
If the DTC is output frequently, duplicate the conditions that cause the problem symptoms and perform the check again, even though the DTC was not output when rechecking for DTCs.

Click here

OK
DTC U0100, U0142, U023A, and U1104 are not output

Result

Proceed to
OK
NG

USE SIMULATION METHOD TO CHECK Click here

GO TO CAN COMMUNICATION SYSTEM Click here