Operation CHARM: Car repair manuals for everyone.
Home >> Oldsmobile >> 1999 >> Cutlass V6-191 3.1L VIN M SFI >> Repair and Diagnosis >> Body and Frame >> Body Control Systems >> Body Control Module >> Testing and Inspection >> Scan Tool Testing and Procedures >> BCM To Cluster Data >> Hi Beam Lamp
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Hi Beam Lamp

Range: ON/OFF
This data indicates what message is being sent from the BCM to the instrument cluster in order to control the high beam indicator illumination. When the BCM is commanding the high beam indicator to be illuminated, indicating that the high beam headlamps are illuminated, ON is displayed. When the BCM is commanding the high beam indicator not to be illuminated, indicating that the high beam headlamps are not illuminated, OFF is displayed.

The BCM reads the high beam input voltage and divides by the system voltage in order to determine a percentage value. This value is compared against a calibration in order to determine if the high beams are ON. The controller forwards this status determination information to the instrument cluster via the SPI data line. The instrument cluster commands the high beam lamp accordingly.
pro multis · About Operation CHARM