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INTERFACE MODULE CHECKOUT
Interface Module
The interface module (1, Figure 13-2) collects data
from various sensors and sends this information to
the VHMS controller through the main wiring har-
ness. It also controls some truck functions.
If a new truck with VHMS is being assembled, or
a new VHMS system has just been installed, refer
to the VHMS Software instructions regarding the
VHMS Initialization Procedure. The initialization
procedure and form must be completed before
the truck can be put into service.
Necessary Equipment:
• Checkout procedure
• System schematic
• Laptop personal computer (PC)
• VHMS Technical Analysis Toolbox software
• VHMS Setting Tool software
• Interface Module Real Time Data Monitor
software
• Serial cable (RS232)
(male DB9 connector on one end, female
connector on the other end)
• Jumper wire 77 mm (3 in.) or longer
• Volt Meter
• 1330 ± 20 ohm resistor
• 3/8 in. nut driver
D13-4
VHMS CHECK-OUT & TROUBLESHOOTING
FIGURE 13-2. INTERFACE MODULE
1. Interface Module
2. Connector IM1
3. Connector IM2
4. Connector IM3
D13004
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