Komatsu 830E-AC Shop Manual page 325

INTERFACE MODULE
The interface module collects data from various sen-
sors and sends this information to the VHMS control-
ler through the main wiring harness.
If a new interface module is purchased, the operating
system (software) has to be installed into the new
interface module. To install the operating system, a
laptop PC must be connected to the IM diagnostic
port (1, Figure 11-4). Two software programs are
required to install the software: the operating system
and the program to perform the installation of the
software (flashburn).
Removal
1. Turn the key switch OFF. Wait three minutes to
allow the VHMS controller to process and store
data.
2. Disconnect the battery using the battery discon-
nect switch.
3. Disconnect the wiring harnesses from the inter-
face module.
4. Remove the mounting hardware and remove
the interface module.
Installation
1. Install the interface module. Attach all wire har-
nesses to the interface module.
2. Refer to the VHMS Software instructions to
install the flashburn program on a laptop PC.
3. Connect the laptop PC to IM diagnostic port (1,
Figure 11-4).
4. Turn the key switch ON, but do not start the
engine.
5. Run the flashburn program to install the operat-
ing system into the interface module. Make sure
the correct operating system is installed for the
model of truck that is being serviced. Refer to
the VHMS Software section for more details on
programming the interface module.
D11005
6. Turn the key switch OFF and wait one minute.
7. Turn the key switch ON, but do not start the
engine. Wait three minutes and watch for any
error messages on the VHMS controller LED
lights that might indicate a problem in the sys-
tem.
8. If there are no error messages, turn the key
switch OFF. If there are error messages, refer
to the VHMS Troubleshooting and Checkout
procedures elsewhere in this section.
FIGURE 11-8. INTERFACE MODULE
1. Interface Module
2. Connector IM1
VHMS COMPONENTS
3. Connector IM2
4. Connector IM3
D11-17