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
Bulb Check
The bulb check function resides in the
BCM. Every time the ignition switch transitions from ACC to RUN, an instrument cluster bulb check will occur for a calibrated amount of time for specified indicators. The bulb check will override the OFF state of the affected indicators. The BCM will determine which indicators to bulb check by looking at an EEPROM table. Every serial peripheral interface
(SPI) indicator has a bit in the EEPROM table. The gauges will WOW during a bulb check. A WOW occurs when all of the gauge indicators are moved at the same time. If there is an indicator lit before the WOW, the indicator will remain lit after this function has concluded.