415-00-11 Audio System — General Information 415-00-11
DIAGNOSIS AND TESTING (CONTINUED)
PINPOINT TEST D: NO SOUND FROM ALL OF THE SPEAKERS
CONDITIONS
DETAILS/RESULTS/ACTIONS
D1: CHECK THE ELECTRICAL CONNECTORS TO THE AUDIO UNIT
1 Check the electrical connectors at the back of
the audio unit.
• Are the electrical connectors engaged?
Yes
GO TO D2
No
CHECK the locking tangs and connector
terminals engage fully. TEST the system for
normal operation.
D2: CHECK THE SPEAK OSITIVE CIRCUIT FOR SHORT TO GROUND ER P
1.
Audio Unit C52b
2 Using a digital multimeter, measure the
appropriate speaker circuit between:
- C52b, pin 1, circuit 33-MD10 (YE/BK) and
ground. (LHF)
- C52b, pin 3, circuit 33-MD11 (YE/VT) and
ground. (LHR)
- C52b, pin 5, circuit 33-MD17 (YE/RD) and
ground. (RHF)
- C52b, pin 7, circuit 33-MD18 (YE) and
ground. (RHR)
• Is the resistance greater than 10,000 ohms?
Yes
GO TO D3
No
REPAIR the appropriate circuit. TEST the
system for normal operation.
E6747 EN 07/2001 2002 Bantam
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