PREVOST H3-45 VIP Owner's Manual page 143

To initiate fault diagnostic, use the DID right after
operating the slide-out without cycling the ignition
switch.
NOTE
The DID is the main tool for troubleshooting a mul-
tiplex vehicle. It is essential to have it in working
condition.
Fault Diagnostic
To get detailed information about the error condition
or the missing operation condition, request a
diagnostic using the dashboard Driver's Info Display
(DID). Check if there are active errors in the slide-out
electrical system. With the DIAGNOSTICS menu,
highlight VIEW ACTIVE FAULTS and then highlight
ELECTRICAL SYSTEM to request a diagnostic of
the electrical system from the MCM.
Press the enter key. If applicable, the DID shows the
device ID, the fault messages or fault codes
recorded. When more than one fault is recorded, an
arrow pointing down appears on the right of the
display. Use the down arrow to see all the fault
messages.
Once the problem is corrected, the DID will still
shows the fault as being active. Leave VIEW
ACTIVE FAULTS up to the main menu. Then return
to DIAGNOSTICS, VIEW ACTIVE FAULTS, and
then ELECTRICAL SYSTEM. The DID should not
display any faults.
PA-1638 Owner's Manual X3-45 VIP
Other Features 5-37