Operation CHARM: Car repair manuals for everyone.
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

Input Testing

1. Make sure the BCM is in self-test and you have retrieved DTCs.
^ The BCM enters the input test mode after it repeats the DTC series for the third time.
^ If no DTCs are stored, the BCM enters this mode immediately.
2. The BCM sounds the chime and flashes the seat belts indicator once for each activation of the following inputs:
^ The reading lamp switches
^ The door lock cylinders
^ The door ajar switches
^ The driver seat belt switch
^ The interior door lock switches
^ The driver information display switches
^ The headlamp switch
^ The IP compartment lamp switch
^ The rear compartment lamp switch
^ The sunshade illuminated mirrors
^ The turn signal switch
^ The trip calculator switches
^ The shock sensors
^ The keyless entry requests for lock/unlock
3. If the BCM does not sound the chime and illuminate the seat belt indicator when an input is activated, the input circuit is malfunctioning.
Refer to the affected subsystem diagnostic system check.