Input/Output (I/O) Mode

While in the input/output (I/O) mode, the technician may test each input to the MALL module by activating/deactivating its input device (the door latch switch, interior lamp switch, seatbelt switch, etc.) The MALL module provides feedback on each input transition in the form of a single tone along with a simultaneous flash of the FASTEN BELTS indicator Test the battery protection (PBATT) input/output by cycling the interior lamps switch. The first cycle (OFF, ON, OFF) deactivates the PBATT output (interior lamps oft). Cycling the interior lamp switch again activates the PBATT output (interior lamps on). The cycle repeats afterwards.

Body Control Module Diagnostic Information:

The table lists the MALL inputs and outputs that should be evaluated during the input/output (I/O) mode