Bose Amp Active Noise Control System

DIAGNOSIS SYSTEM [BOSE AMP.(ACTIVE NOISE CONTROL SYSTEM)]


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, BOSE amp., 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 the actual number of cylinders is different from the diagnosis sound of the cylinder identification, check the cylinder identification signal circuit.