Delco LOC II Security System - Setting Procedures: Overview

90pontiac25
Bulletin Number: 91-9-2
Reference Number: 039005R
Publish Date: 10/90
Subject: NEW "DELCO-LOC II" SETTING PROCEDURES (INFORMATION)


Models

Affected: 1989-91 6000, FIREBIRD, BONNEVILLE AND GRAND PRIX MODELS
This butletin cancels and replaces bulletin 89-9-2 issued 11/88.

The following information updates all existing Service Manual information.

The procedures below explain how to operate the Delco LOC II security system. This includes entering and removing customer codes, unlocking the radio, obtaining the factory display code, and obtaining the factory backup code.

General Information:

Different model radios use different buttons to set the codes into the radio. To determine which two buttons to use, determine if the radio has a seek button, a seek up/down button, or no seek button at all.

If the radio has a seek button, use seek and scan to set the codes as described below.

If the radio has a seek up/down button, use seek up/down and tune up/down to set the codes and substitute these buttons for seek and scan in the procedures below.

If the radio has no seek button, use tune down and tune up to set the codes and substitute these buttons for seek and scan in the procedures below.
Different model radios have different functions attached to the radio presets. Below is the present configuration of dual function depending on the radio having a seek button, seek up/down or no see button at all.

SEEK BUTTON: Presets 1 (PREV), 2 (NEXT), 3 (REV), 4 (FF), 5 (COMP)

SEEK UP/DOWN: Presets 1 (PREV), 2 (NEXT), 3 (REV), 4 (FF),
5 (COMP)

NO SEEK Presets 1 (REV), 2 ((FF), 3 (COMP), 4 (REPT)
5 (SRCH), 6 (SCAN)

RADIO DISPLAYS:

"LOC" Means the radio is locked and there is a customer
code stored in the radio.

"INOP" Means too many wrong codes have been entered and the
radio must be left powered up for 1 hour with battery and ignition applied before 3 more attempts can be made.

"SEC" Means there is a customer code stored but the radio
is unlocked.

"---" Means there is no customer code stored and the radio
is unlocked.

"REP" Means you have entered your customer code once, and
the radio now wants the code repeated again to verify you entered the correct code the first time.