V8 Quattro V8-3562cc 3.6L DOHC (PT) (1990)
Cellular Phone: All Technical Service Bulletins
Electronic Serial Number, Checking
ELECTRONIC SERIAL NUMBER (ESN), CHECKING (DIAGNOSTIC TEST COMMAND 38 # )
^
insert test connector US 30844 (arrow) in line between power cord (25-pin connector) 1 and transceiver 2
^
switch ignition ON
^
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.
^
press "# " key to enter Test Mode
^
handset readout displays "US" with an apostrophe (') in the upper right hand corner
^
enter diagnostic command 38 # by pressing keys "3", "8", and "# "
^
electronic serial number identification begins, first display is shown ("00 82" or "00 C3")
Note
The electronic serial number (ESN) readout is divided into four separate displays each showing two characters of the ESN. The number on the left
indicates the step of the identification process (00 through 03), and the two characters on the right indicate a portion of the ESN.
For example: