Sound Is Not Heard from Subwoofer (Premium System)

AUDIO


Sound Is Not Heard from Subwoofer (Premium System)

1.CHECK FUSE
Check that the following fuse is not blown.





OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of blown fuse before installing new fuse. Refer to Description and Operation.
2.EQ SETTING CHECK
1. Ensure that subwoofer amp. connector B29 and audio unit harness connectors M43, M44 and M45 are securely connected.
2. Turn the ignition switch to the ACC position.
3. Press the "AUDIO", "AUX", and "TUNE DOWN" switches simultaneously, the current EQ Setting will be displayed.
Is "Woofer On" displayed?
YES >> GO TO 3.
NO >> Disconnect all audio unit harness connectors and wait for 2 minutes in order to reset the audio unit. Reconnect audio unit connectors M44 and M45 first followed by M43 last. Repeat Steps 1 through 3 to confirm that "Woofer On" is now displayed.
3.POWER SUPPLY CIRCUIT CHECK
1. Turn ignition switch OFF.
2. Disconnect subwoofer connector.
3. Check voltage between the subwoofer and ground.










OK or NG
OK >> GO TO 4.
NG >>
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
4.GROUND CIRCUIT CHECK
1. Turn ignition switch OFF.





2. Check continuity between subwoofer harness connector B29 terminal 3 and ground.

Continuity should exist.

OK or NG
OK >> GO TO 5.
NG >>
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
5.CHECK SUBWOOFER ON SIGNAL
1. Turn ignition switch to ACC.





2. Operate system and check voltage between subwoofer harness connector B29 terminal 4 and ground.

Voltage : Approx. 11.3V

OK or NG
OK >> GO TO 6.
NG >>
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
6.HARNESS CHECK
1. Turn ignition switch OFF.
2. Disconnect audio unit connector and subwoofer connectors.





3. Check continuity between audio unit harness connector terminal and subwoofer harness connector terminal.





4. Check continuity between audio unit harness connector terminal and ground.





OK or NG
OK >> GO TO 7.
NG >>
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
7.SUBWOOFER SIGNAL CHECK
1. Connect audio unit connector and subwoofer connector.
2. Turn ignition switch to ACC.





3. Check the signal between audio unit harness connector terminals with CONSULT-III or oscilloscope.






OK or NG
OK >> Replace subwoofer. Refer to Service and Repair .
NG >> Replace audio unit. Refer to Service and Repair .