With Navigation

CENTER SPEAKER

Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" With Navigation.

1. 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.

2. CHECK CENTER SPEAKER SIGNAL CIRCUIT CONTINUITY (BOSE SPEAKER AMP.)

1.Disconnect Bose speaker amp. connector B121 and center speaker connector M301.
2.Check continuity between Bose speaker amp. connector B121 and center speaker connector M301.





3.Check continuity between Bose speaker amp. connector B121 and ground.





Is the inspection result normal?
YES- GO TO 3
NO- Repair or replace harness or connectors.

3. CHECK CENTER SPEAKER SIGNAL (BOSE SPEAKER AMP.)

1.Connect Bose speaker amp. connector B121 and center speaker connector M301.
2.Turn ignition switch to ACC.
3.Push AV control unit POWER switch.
4.Check signal between Bose speaker amp. connector B121 and ground.





Is the inspection result normal?
YES- Replace center speaker. Refer to "Removal and Installation" With Navigation.
NO- GO TO 4

4. CHECK CENTER SPEAKER SIGNAL CIRCUIT CONTINUITY (AV CONTROL UNIT)

1.Turn ignition switch to OFF.
2.Disconnect Bose speaker amp. connector B121 and AV control unit connector M151.
3.Check continuity between Bose speaker amp. connector B121 and AV control unit connector M151.





4.Check continuity between Bose speaker amp. connector B121 and ground.





Is the inspection result normal?
YES- GO TO 5
NO- Repair or replace harness or connectors.

5. CHECK CENTER SPEAKER SIGNAL (AV CONTROL UNIT)

1.Connect Bose speaker amp. connector B121 and AV control unit connector M151.
2.Turn ignition switch to ACC.
3.Push AV control unit POWER switch.
4.Check signal between AV control unit connector M151 and ground.





Is the inspection result normal?
YES- Replace Bose speaker amp. Refer to "Removal and Installation" With Navigation.
NO- Replace AV control unit. Refer to "Removal and Installation" With Navigation.