Mitsubishi 3000GT Service Manual page 1059

Screw
Code registration switch
BODY - Keyless Entry System
INSPECTION
BATTERY REPLACEMENT
(1) Remove the mounting screw and take the battery out
of the transmitter.
(2) Install a new battery with its positive side down.
Replacement battery: Coin type j battery ,CR2032
(3) Insert the tabs first. Then, being careful not to shift the
O-ring, assemble the transmitter.
(4) Make sure that the keyless entry system operates properly.
NOTE
(1) When the transmitter is opened, be careful not to
allow water, dust, etc. to stick to the inside of the
transmitter. In addition, do not touch the precision
electronic device.
(2) If the O-ring is shifted while assembling the transmitter,
water, dust, etc. may enter the transmitter, resulting
in transmitter troubles.
SECRET CODE REGISTERING METHOD
The transmitter has each individual secret code stored in
memory. When, therefore, the transmitter or receiver is re-
placed or the trouble is presumed to be caused by the faulty
registration of the secret code, it is necessary to register
the secret code on EEPROM inside the receiver.
Since two different secret code at the most can be placed
in the storage space of EEPROM, the old code will no longer
be usable if the undermentioned registration operation is re-
peated twice. Meanwhile, before registering the code, it should
be confirmed that an ordinary door lock function can be per-
formed by key operation.
(1) Place the code registration switch to the SET I position
(registration mode).
(2) Press the LOCK or UNLOCK switch of the transmitter.
TSB Revision