SECTION 06: ELECTRICAL
38
DOB 2490-2789 | X3-45 Commuter PA1605 Maintenance Manual (Final Version) – Sec 06 revised June 2017
FIGURE 30: USB TO SERIAL DB9 RS232 ADAPTOR AND
PREVOST 066009 INTERFACE CABLE
3. Identify com port number. To do so, right
click on “my computer” to open “computer
management”. Select “device manager” and
note the com number (see Figure 31).
FIGURE 31: IDENTIFYING COM PORT NUMBER
4. Double-click on the com port and validate the
port settings. Settings should be as shown on
Figure 32.
FIGURE 32: PROPER PORT SETTINGS
5. Locate the specific multiplex program file
previously saved on your computer desktop.
The file name should contain the vin’s last 4
digits of the vehicle you are about to update
(example: file mp_0012
5146
a11 for bus
#2408 which as vin 2pcg33491cc73
5146
)
6.
Double-click on the specific multiplex
program file, a dialog box will open. You must
enter a valid communication port to master
id/mcm. Select the proper com port number
previously identified and then click on
“continue” (see Figure 33). The upload will
begin.
FIGURE 33: ENTER PROPER COM PORT NUMBER
7. Wait until the upload is completed. You
should read: “software transfer successfully
completed”.
8. Validate the program version using the DID.
Look in diagnostic>part number>electrical
system menus (see Figure 34). To confirm
the update is has been successfully done,
the last digits of the software number should
match the file name (mp_00125146a11)
uploaded.
FIGURE 34: VALIDATING PROGRAM VERSION
9. On rear electrical junction panel, trip and
reset circuit breaker cb6.
10. Clear all diagnostics troubleshooting codes.
