Speaker Circuit

VEHICLE PROXIMITY NOTIFICATION SYSTEM: VEHICLE PROXIMITY NOTIFICATION SYSTEM: Speaker Circuit
- Speaker Circuit

DESCRIPTION

The vehicle approaching speaker controller causes the vehicle approaching speaker assembly to operate (produce a sound) when the vehicle is being driven using EV drive mode. When the vehicle is being driven in EV drive mode, the vehicle approaching speaker controller changes the tone of the sound in accordance with vehicle speed.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER (OUTPUT WAVEFORM)

(a) Check the output waveform.





(1) Disconnect the A63 vehicle approaching speaker assembly connector.

(2) Connect an oscilloscope to terminal A63-2 (+) and A63-1 (-).

(3) Check the signal waveform according to the condition(s) in the table below.





*: Use the operation check procedure to operate the speaker Operation Check.

OK:

The waveform is displayed as shown in the illustration.

Text in Illustration





NG -- CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - VEHICLE APPROACHING SPEAKER ASSEMBLY)

OK -- REPLACE VEHICLE APPROACHING SPEAKER ASSEMBLY Removal

2. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - VEHICLE APPROACHING SPEAKER ASSEMBLY)

(a) Disconnect the H138 vehicle approaching speaker controller connector.

(b) Disconnect the A63 vehicle approaching speaker assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures