INFO. - INSTRUMENT PANEL CLUSTER DTC B1910 SET. Cadillac Concours 1997

For 1990-2009 cars

# INFO. - INSTRUMENT PANEL CLUSTER DTC B1910 SET

#### SUBJECT: INFORMATION - INSTRUMENT PANEL CLUSTER DTC B1910 SET (NO WARNING LAMP OR DRIVER INFORMATION CENTER MESSAGE)

#### MODELS: 1997 CADILLAC DEVILLE, ELDORADO, SEVILLE

BUILT PRIOR TO VIN BREAKPOINT:

DEVILLE - 242025 ELDORADO - 608916 SEVILLE - 815964

SOME OF THE ABOVE LISTED VEHICLES MAY EXHIBIT AN INSTRUMENT PANEL CLUSTER (IPC) DIAGNOSTIC TROUBLE CODE (DTC) B1910 SET CURRENT (IGNITION ON, ENGINE NOT RUNNING) OR HISTORY. THIS DTC DOES NOT RESULT IN AN ILLUMINATED WARNING LAMP OR DRIVER INFORMATION CENTER MESSAGE. IN ADDITION, THIS CONDITION DOES NOT AFFECT THE PERFORMANCE OR DURABILITY OF THE GENERATOR.

THE DTC IS BEING SET DUE TO A SENSITIVITY BETWEEN THE GENERATOR VOLTAGE REGULATOR AND THE VEHICLE ELECTRICAL SYSTEM, AND IS NOT CAUSED BY A DEFECT IN THE GENERATOR OR IN THE INSTRUMENT PANEL CLUSTER (IPC).

IF A VEHICLE EXHIBITS THIS CONDITION, DO NOT ATTEMPT A REPAIR BY REPLACEMENT OF THE GENERATOR OR THE INSTRUMENT PANEL CLUSTER WITHOUT FURTHER DIAGNOSTIC VERIFICATION.

IF THE CHARGING SYSTEM EXHIBITS SYMPTOMS REQUIRING DIAGNOSIS ON VEHICLES WITH THIS CONDITION, CONFIRM PROPER GENERATOR OPERATION USING THE FOLLOWING PROCEDURE:

#### IMPORTANT:

DTC B1910 BY ITSELF ON THESE VEHICLES DOES NOT INDICATE THE NEED TO FOLLOW THIS PROCEDURE.

1. USING A DMM, CHECK CIRCUIT 225 (RED) FOR AN OPEN, FROM THE INSTRUMENT PANEL CLUSTER (IPC) CONNECTOR C1 PIN A9 TO THE GENERATOR PIN L.

2. CHECK THE INSTRUMENT PANEL CLUSTER (IPC) CONNECTOR C3, HARNESS INLINE CONNECTOR C101, AND THE GENERATOR CONNECTOR FOR PROPER CONNECTION.

3. PERFORM A GENERATOR FUNCTIONAL CHECK PER SECTION 6D1 IN THE SERVICE MANUAL.

FIGURES: 00 ATTACHMENTS: 00

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 1996 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.