Problem Symptoms Table [12/2019 - 11/2023]

NOTE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

For HV Model: Refer to REGISTRATION [12/2019 - 10/2021] , or refer to REGISTRATION [10/2021 - 11/2023]

For Gasoline Model: Refer to REGISTRATION [12/2019 - 10/2021] , or refer to REGISTRATION [10/2021 - 10/2022] , or refer to REGISTRATION [10/2022 - 11/2023]

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

HORN SYSTEM

Symptom	Suspected Area	Link
Horn does not sound	HORN fuse	-
	HORN relay	Refer to ON-VEHICLE INSPECTION [12/2019 - ]
	Horn button assembly	Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]
	Spiral cable sub-assembly	Refer to INSPECTION [12/2019 - ]
	Instrument panel junction block assembly	Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]
	Harness or connector	-
Horn sounds all the time	HORN relay	Refer to ON-VEHICLE INSPECTION [12/2019 - ]
	Horn button assembly	Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]
	Spiral cable sub-assembly	Refer to INSPECTION [12/2019 - ]
	Instrument panel junction block assembly	Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]
	Main body ECU (Multiplex network body ECU)	Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]
	Harness or connector	-
Low pitched horn operates but high pitched horn does not operate	High pitched horn assembly	Refer to INSPECTION [12/2019 - ]
	Harness or connector	-
High pitched horn operates but low pitched horn does not operate	Low pitched horn assembly	Refer to INSPECTION [12/2019 - ]
	Harness or connector	-