Active Noise Control Unit

DIAGNOSIS SYSTEM (ACTIVE NOISE CONTROL UNIT)

On Board Diagnosis Function


ON BOARD DIAGNOSIS ITEM

Starting with the operation of the door switch, the Self-diagnosis function allows the diagnoses of the active noise control unit internal circuit, the input state of each signal, and a microphone connection state. The diagnosis results are indicated by a sound.

METHOD OF STARTING

Perform Self-diagnosis, according to the following steps:





- When a sound is not outputted from the speakers as a result of the preparation, check the AV control unit, active noise control unit, connector connections, or speakers.
- When Self-diagnosis mode does not start at Step 1, check the door state signal circuit.
- When a malfunction is detected in the microphone at Step 8, check the signal circuit of each microphone.
- When an error is detected in an engine speed signal at Step 10, check the engine speed signal circuit.