RM3660EC _59 Vehicle Exterior _080768 HORN _0582452 HORN SYSTEM T

HORN  HORN SYSTEM  PROBLEM SYMPTOMS TABLE  


NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.*

*: w/ Smart Entry and Start System



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 Click here
Horn button assembly Click here
Spiral cable sub-assembly Click here
Driver side junction block assembly*1
Power distribution box assembly*2 		Click here
Harness or connector -
Horn sounds all the time HORN relay Click here
Horn button assembly Click here
Spiral cable sub-assembly Click here
Driver side junction block assembly*1
Power distribution box assembly*2 		Click here
Main body ECU (Multiplex network body ECU) Click here
Harness or connector -
Low pitched horn operates but high pitched horn does not operate High pitched horn assembly Click here
Harness or connector -
High pitched horn operates but low pitched horn does not operate Low pitched horn assembly Click here
Harness or connector -

*1: for 8NR-FTS, 9NR-FTS

*2: except 8NR-FTS, 9NR-FTS