PARK ASSIST / MONITORING: PARKING SUPPORT BRAKE SYSTEM: U010087,U016487,U023387,U023A87; Lost Communication With ECM/PCM "A" Missing Message; 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2024

Last Modified: 12-11-2024	6.11:8.1.0	Doc ID: RM100000002P6AY
Model Year Start: 2025	Model: GR Corolla	Prod Date Range: [09/2024 - ]
Title: PARK ASSIST / MONITORING: PARKING SUPPORT BRAKE SYSTEM: U010087,U016487,U023387,U023A87; Lost Communication With ECM/PCM "A" Missing Message; 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2024 - ]

DTC

U010087

Lost Communication With ECM/PCM "A" Missing Message

DTC

U016487

Lost Communication with HVAC Control Module Missing Message

DTC

U023387

Lost Communication with Side Obstacle Detection Control Module "B" Missing Message

DTC

U023A87

Lost Communication with Image Processing Module "A" Missing Message

DESCRIPTION

These DTCs are stored if there is a malfunction in the CAN communication system connected to the clearance warning ECU assembly.

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	DTC Output from	Priority
U010087	Lost Communication With ECM/PCM "A" Missing Message	Lost communication with ECM	CAN communication system	Clearance Warning	B
U016487	Lost Communication with HVAC Control Module Missing Message	Lost communication with air conditioning amplifier assembly	CAN communication system	Clearance Warning	B
U023387	Lost Communication with Side Obstacle Detection Control Module "B" Missing Message	Lost communication with blind spot monitor sensor LH (B)	CAN communication system	Clearance Warning	B
U023A87	Lost Communication with Image Processing Module "A" Missing Message	Lost communication with forward recognition camera	CAN communication system	Clearance Warning	B

CLEAR DTC

(a) Clear the DTCs.

2.	CHECK DTC OUTPUT

(a) Check for DTCs.

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 caused the problem symptoms and perform troubleshooting again, even though DTCs were not output when rechecking for DTCs.

Result	Proceed to
DTCs are output	A
DTCs are not output	B
None of the above conditions are met	C

GO TO DTC CHART