Symptom:
*AMPLIFIER PRETEST
POSSIBLE CAUSES
AMPLIFIER PRETEST
NO FAULT MESSAGE DISPLAYED
TEST ACTION APPLICABILITY
1 NOTE: Perform this test if the vehicle is experiencing a problem with no
sound or poor sound quality from a speaker or channel.
Turn the ignition on.
Turn the radio on.
With the DRBIIIt enter Body, Audio Systems, Digital Audio Amplifier then System
Tests.
With the DRBIIIt enter any one of the amplifier tests.
NOTE: The Continuous Tone test will send a continuous tone to each
speaker. This test will verify the integrity of an individual speaker channel,
but will not display any fault messages.
NOTE: The PCI Amplifier Test will detect a PCI or Checksum Failure, and
will display fault messages.
NOTE: The Input Test will detect activity on the amplifier input channels,
and will display fault messages.
NOTE: The Speaker Output Test will detect activity on the amplifier output
channels, and will display fault messages.
Did the DRBIIIt display a fault message?
All
Yes → Perform the appropriate corresponding test.
Perform BODY VERIFICATION TEST - VER 1.
No → If the DRB does not display a fault message and the vehicle is
experiencing a problem with a speaker or channel, refer to the
wiring diagrams in the service information to help isolate a
possible open in the wiring to the affected speaker or channel.
Perform BODY VERIFICATION TEST - VER 1.
250
AUDIO
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