CHECK VEHICLE APPROACHING SPEAKER CONTROLLER
Disconnect the I204 vehicle approaching speaker controller connector.
Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
|---|---|---|---|
| I204-7 (+B) - Body ground | Power source | Ignition switch off | 11 to 14 V |
| I204-12 (GND) - Body ground | Ground | Always | Below 1 Ω |
Connect the I204 vehicle approaching speaker controller connector.
Check the signal waveform and check for pulses according to the condition(s) in the table below.
| Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
|---|---|---|---|
| I204-3 (SP+) - I204-4 (SP-) | Vehicle approaching speaker assembly output | Vehicle approaching speaker assembly operating | A waveform synchronized with the sound is output.
(See Waveform) |
| I204-1 (CANH) - I204-12 (GND) | CAN communication line | Ignition switch ON | Pulse generation |
| I204-2 (CANL) - I204-12 (GND) | CAN communication line | Ignition switch ON | Pulse generation |
Waveform
| Item | Condition |
|---|---|
| Tester Connection | I204-3 (SP+) - I204-4 (SP-) |
| Tool Setting | 1 V/DIV., 500 ms./DIV. |
| Condition | Vehicle approaching speaker assembly operating |