S4 Sedan L5-2226cc 2.22L DOHC Turbo (AAN) (1992)
Cellular Phone: All Technical Service Bulletins
Hands Free System - Checking
HANDS-FREE SYSTEM, CHECKING
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insert test connector US 30844 -arrow- in line between power cord (25-pin connector) -1- and transceiver -2-
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switch ignition ON
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switch phone ON by pressing "Pwr" button on handset
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handset readout displays two alternating sets of numbers
Note:
This procedure can also be performed with the ignition switch OFF However, when the phone is switched ON, the display may show "Loc'd". To
proceed, press the " # " key to enter the Test Mode directly
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press " # " key to enter Test Mode
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handset readout displays " US " with an apostrophe ( ' ) in the upper right hand corner
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enter diagnostic command 350 # by pressing keys 3, 5, 0 and #
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enter diagnostic command 48 # by pressing keys 4, 8, and #
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tap microphone lightly while listening to hands-free speaker
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must hear audio from speaker
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if NO, refer to hands-free operation troubleshooting
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to exit test mode, switch phone OFF
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remove test connector
Note:
All hands-free system components (microphone, speaker, wiring, etc.) are verified by successful completion of this check.