Buick TSB #PIP4993B

2015 Buick LaCrosse

TSB Document:

Affected Component: ELECTRICAL SYSTEM:12V/24V/48V BATTERY

Summary
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR VEHICLES THAT MAY HAVE A SERVICE CHARGING SYSTEM, BATTERY SAVER MESSAGE OR MALFUNCTION INDICATOR LAMP ON, AND/OR CHARGING SYSTEM INOPERATIVE. TECHNICIAN WILL USE GLOBAL DIAGNOSTIC SYSTEM 2 AND CLEAR THE DIAGNOSTIC TROUBLE CODES IN THE HYBRID POWERTRAIN CONTROL MODULE AND THE BATTERY ENERGY CONTROL MODULE. THEN TURN THE IGNITION OFF FOR A MINIMUM OF 2 MINUTES TO ALLOW THE HIGH SPEED LOCAL AREA NETWORK AND POWERTRAIN EXPANSION BUS TO POWER DOWN. START THE CAR AND MONITOR THE CHARGING SYSTEM VOLTAGE. IF THE CHARGING SYSTEM IS STILL INOPERATIVE THERE MAY BE A LOGIC LOCK CONDITION. DISCONNECT THE 12V BATTERY AND PERFORM A GLOBAL CAPACITIVE DISCHARGE AND REPEAT STEPS AGAIN.

Click a tab for more information.

Date Published
JAN 22, 2015
NHTSA TSB #
10095156
Find something helpful? Spread the word.

Become a Fan & Spread the Word