CONNECTOR CHECK
Check the AV control unit, Bose speaker amp. and speaker connectors for the following:
Proper connection
Damage
Disconnected or loose terminals
Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair the terminals or connectors.
CHECK INSTRUMENT PANEL TWEETER SIGNAL CIRCUIT CONTINUITY (BOSE SPEAKER AMP.)
Ignition switch OFF.
Disconnect Bose speaker amp. connector and suspect instrument panel tweeter connector.
Check continuity between Bose speaker amp. connector and suspect instrument panel tweeter connector.
| Bose speaker amp. | Instrument panel tweeter | Continuity | ||
|---|---|---|---|---|
| Connector | Terminal | Connector | Terminal | |
| B120 | 1 | M62 (LH) | 1 | Yes |
| 2 | 2 | |||
| 4 | M73 (RH) | 1 | ||
| 3 | 2 | |||
Check continuity between Bose speaker amp. connector and ground.
| Bose speaker amp. | Ground | Continuity | |
|---|---|---|---|
| Connector | Terminal | ||
| B120 | 1 | — | No |
| 2 | |||
| 4 | |||
| 3 | |||
Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair or replace harness or connectors.
CHECK INSTRUMENT PANEL TWEETER SIGNAL (BOSE SPEAKER AMP.)
Connect Bose speaker amp. connector and suspect instrument panel tweeter connector.
Ignition switch ON.
Push AV control unit POWER switch.
Check signal between the terminals of Bose speaker amp. connector.
| Bose speaker amp. connector B120 | Condition | Reference value | |
| (+) | (−) | ||
| Terminal | Terminal | ||
| 1 | 2 | Audio signal output |
|
| 4 | 3 | ||
Is the inspection result normal?
YES>>Replace instrument panel tweeter. Refer to Removal and Installation.
NO>>GO TO 4.
CHECK INSTRUMENT PANEL TWEETER SIGNAL CIRCUIT CONTINUITY (AV CONTROL UNIT)
Ignition switch OFF.
Disconnect Bose speaker amp. connector and AV control unit connector.
Check continuity between Bose speaker amp. connector and AV control unit connector.
| Bose speaker amp. | AV control unit | Continuity | ||
|---|---|---|---|---|
| Connector | Terminal | Connector | Terminal | |
| B121 | 35 | M161 | 2 | Yes |
| 36 | 3 | |||
| 33 | 11 | |||
| 34 | 12 | |||
Check continuity between Bose speaker amp. connector and ground.
| Bose speaker amp. | Ground | Continuity | |
|---|---|---|---|
| Connector | Terminal | ||
| B121 | 35 | — | No |
| 36 | |||
| 33 | |||
| 34 | |||
Is the inspection result normal?
YES>>GO TO 5.
NO>>Repair or replace harness or connectors.
CHECK INSTRUMENT PANEL TWEETER SIGNAL (AV CONTROL UNIT)
Connect Bose speaker amp. connector and AV control unit connector.
Ignition switch ON.
Push AV control unit POWER switch.
Check signal between AV control unit connector and ground.
| AV control unit | Condition | Reference value | ||
| Connector | (+) | (−) | ||
| Terminal | Terminal | |||
| M161 | 2 | 3 | Audio signal output |
|
| 11 | 12 | |||
Is the inspection result normal?
YES>>Replace Bose speaker amp. Refer to Removal and Installation.
NO>>Replace AV control unit. Refer to Removal and Installation.
Bose Speaker Amp
Amp on Signal CircuitUnfastening the seat belts

To unfasten the seat belt, press the button
on the buckle
. The seat belt
automatically
retracts.