S4 Sedan L5-2226cc 2.22L DOHC Turbo (AAN) (1992)
Cellular Phone: All Technical Service Bulletins
Security Code Identifying
SECURITY CODE, IDENTIFYING (DIAGNOSTIC TEST COMMAND 55 #)
Use the following procedure when phone programming is not possible due to an unknown or forgotten six-digit security code. This procedure is also
used to determine a forgotten lock code or phone number.
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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
^
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
^
handset readout displays "US" with an apostrophe (') in the upper right hand corner
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enter diagnostic command 55 # by pressing keys 5, 5, and #
^
test mode programming begins on step one