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Home >> Cadillac >> 2002 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1321 (Body Control System) >> Diagnostic Information and Procedures >> On-Board Diagnostic Features >> Input Testing
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Input Testing

WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  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.

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