Nissan Altima (L32) 2007-2012 Service Manual: Subwoofer (sedan)
Description
The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the subwoofers using the audio signal circuits.
Diagnosis Procedure
1.HARNESS CHECK
1. Disconnect BOSE speaker amp. connector B122 and suspect rear subwoofer connector.
2. Check continuity between BOSE speaker amp. harness connector B122 (A) and suspect rear subwoofer harness connector (B).
3. Check continuity between B
Are the continuity test results as specified? YES >> GO TO 2
NO >> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
2.REAR SUBWOOFER SIGNAL CHECK
1. Connect BOSE speaker amp. connector B122 and suspect rear subwoofer connector.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between BOSE speaker amp. harness connector B122 terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage as specified? YES >> Replace suspect rear subwoofer. Refer to AV-222, "Removal and Installation".
NO >> GO TO 3
3.HARNESS CHECK
1. Disconnect audio unit connector M43 and BOSE speaker amp.
connector B121.
2. Check continuity between audio unit harness connector M43 (A) and BOSE speaker amp. harness connector B121 (B).
3. Check continuity between audio unit harness connector M43 (A) terminal and ground.
Are continuity test results as specified? YES >> GO TO 4
NO >> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
4.REAR SUBWOOFER SIGNAL CHECK
1. Connect audio unit connector M43 and BOSE speaker amp.
connector B121.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between audio unit harness connector M43 terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage as specified? YES >> Replace BOSE speaker amp. Refer to AV-216, "Removal and Installation - Sedan".
NO >> Replace audio unit. Refer to AV-215, "Removal and Installation".
Subwoofer (coupe)
Description The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the subwoofers using the audio signal circuits. D ...AMP on signal circuit
Description When the audio system is turned on, a voltage signal is supplied from the audio unit to the BOSE speaker amp. When this signal is received, the BOSE speaker amp. will turn on. Diagnos ...Other materials:
Doors
When the doors are locked using one of the
following methods, the doors can not be opened
using the inside or outside door handles. The
doors must be unlocked to open the doors.
WARNING
● Always have the doors locked while
driving. Along with the use of seat belts,
this provides greater ...
Warning systems switch (if so equipped)
The warning systems switch is used to temporarily
turn off the warning systems (Lane Departure
Warning (LDW) and Blind SpotWarning (BSW)
systems) that are activated using the settings
menu in the vehicle information display.
When the warning systems switch is turned off,
the indicator 1 on ...
Xenon headlights (if so equipped)
WARNING
HIGH VOLTAGE
● When xenon headlights are on, they
produce a high voltage. To prevent an
electric shock, never attempt to modify
or disassemble. Always have your xenon
headlights replaced at a NISSAN
dealer.
● Xenon headlights provide considerably
more light than conventi ...