For 1990-2009 cars

# SMU - SECTION 9D - PROGRAMMING A NEW CENTRAL CONTROL MODULE

********************************************************************** SERVICE MANUAL UPDATE **********************************************************************

#### SUBJECT: SECTION 9D - PROGRAMMING A NEW CENTRAL CONTROL MODULE (CCM)

#### MODELS: 1993-94 CADILLAC FLEETWOOD

#### IMPORTANT:

. ANY NEW CENTRAL CONTROL MODULE (CCM) WILL AUTOMATICALLY PROGRAM TO THE RESISTANCE OF THE KEY (OR INTERROGATOR SETTING) BEING USED AT THE FIRST IGNITION "ON" CYCLE. THIS CAN ONLY BE DONE ONCE FOR THE LIFE OF THE MODULE.

NEW CCM IS UNPROGRAMMED. BEFORE THE SYSTEM WILL FUNCTION PROPERLY AFTER A NEW CCM HAS BEEN INSTALLED, IT MUST BE PROGRAMMED TO THE CODE THAT MATCHES THE CUSTOMER'S KEYS. PROGRAMMING A NEW CCM IS VERY SIMPLE:

1. INSTALL THE NEW UNPROGRAMMED CCM.

2. INSERT ONE OF THE CUSTOMER'S KEYS IN THE IGNITION LOCK CYLINDER AND TURN IT TO THE "ON" POSITION. IT'S A GOOD IDEA TO START THE ENGINE AT THIS TIME TO VERIFY SYSTEM OPERATION.

3. OBSERVE THE "PASS KEY FAULT" INDICATOR LAMP:

. THE INDICATOR LAMP SHOULD LIGHT FOR ABOUT FIVE SECONDS AND THEN GO OUT. IF THE WIRING OR CONTACTS TO THE KEY RESISTANCE PELLET OR THE KEY IS DEFECTIVE OR INTERMITTENT AND A NEW MODULE IS INSTALLED, THE ENGINE WILL START BUT THE "PASS KEY FAULT" INDICATOR WILL FLASH AT A RATE OF ONE FLASH PER SECOND UNTIL THE IGNITION SWITCH IS TURNED OFF. THIS INDICATES THAT THE MODULE DID NOT PROGRAM AND THAT THE SYSTEM COMPONENTS, WIRING AND CONTACTS SHOULD BE CHECKED FOR A FAULT.

FIGURES: 0

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER". THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS THAT MAY OCCUR ON SOME VEHICLES, OR TO PROVIDE INFORMATION THAT COULD ASSIST IN THE PROPER SERVICE OF A VEHICLE. PROPERLY TRAINED TECHNICIANS HAVE THE EQUIPMENT, TOOLS, SAFETY INSTRUCTIONS AND KNOW-HOW TO DO A JOB PROPERLY AND SAFELY. IF A CONDITION IS DESCRIBED, DO NOT ASSUME THAT THE BULLETIN APPLIES TO YOUR VEHICLE, OR THAT YOUR VEHICLE WILL HAVE THAT CONDITION. SEE A GENERAL MOTORS DEALER SERVICING YOUR BRAND OF GENERAL MOTORS VEHICLE FOR INFORMATION ON WHETHER YOUR VEHICLE MAY BENEFIT FROM THE INFORMATION.

COPYRIGHT 1994 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.