Audio unit button illumination does no work
NOTE:
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Check the No. 29 (10 A) fuse in the under-dash fuse/relay box.
YES
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NO
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Replace the fuse, and recheck.■
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Turn the ignition switch to ON (II).
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Turn the combination lighting switch to the parking light position.
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Check the illumination of the audio unit buttons.
Are the buttons illuminated?
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YES
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-
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Intermittent failure: the audio unit is OK at this time. Check for loose or poor connections at the audio unit connector A (24P).■
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NO
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-
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Check the illumination of several other buttons not related to the audio system.
Are the buttons illuminated?
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YES
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-
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NO
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Troubleshoot the dashboard illumination circuit.■
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Turn the ignition switch to LOCK (0).
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Disconnect audio unit connector A (24P).
NOTE: Eject the CD before removing the audio unit to prevent damaging the CD player's load mechanism.
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Turn the ignition switch to ON (II).
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With the headlight switch still on, measure the voltage between audio unit connector A (24P) terminal No. 13 and body ground.
Is there battery voltage?
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YES
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-
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NO
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-
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Repair open in the wire between the under-dash fuse/relay box and the audio unit.■
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