TM 5-3805-294-23-1
0124
Table 1. Engine Control Unit (ECU) Does Not Communicate With Service Advisor - Continued.
Test or Inspection
Corrective Action
Malfunction
1.
Attach USB cable to DPA 4
10.
DPA 4 Plus Red
Plus and MSD. (Volume 3,
Error Light ON.
WP 0375)
2.
Open Service ADVISOR and
attempt to connect to the
ECU. (Volume 3, WP 0375)
3.
Turn key switch to OFF
1.
If red error light is ON, replace
position (TM 5-3805-294-10).
DPA 4 Plus. (Volume 3,
(Volume 5, WP 0794)
WP 0375)
2.
If red error light is not ON,
proceed to Malfunction 22.
1.
Disconnect DPA 4 Plus cable
11.
Voltage Between
from 9-pin diagnostic
Connector X1
connector. (Volume 3,
Sockets A and B
Not Greater than 10
WP 0375)
Volts.
2.
Turn key switch to ON position,
but DO NOT START ENGINE
(TM 5-3805-294-10). (Volume
5, WP 0794)
3.
Measure voltage (Volume 3,
WP 0369) between connector
X1 sockets A and B. (Volume
5, WP 0800, Figure 144) Note
reading.
4.
Turn key switch to OFF
1.
If greater than 10 volts,
position (TM 5-3805-294-10).
Malfunction 18.
(Volume 5, WP 0794)
2.
If less than 10 volts,
Malfunction 12.
1.
Remove DIAG 5A F18 Fuse
12.
DIAG 5A F18 Fuse
(TM 5-3805-294-10). (Volume
Blown.
5, WP 0794)
2.
Visually inspect DIAG 5A F18
1.
If fuse is blown, replace DIAG
fuse for blown element.
5A F18 fuse (TM
5-3805-294-10). (Volume 5,
WP 0794) Restore machine to
original condition.
2.
If not blown, proceed to
Malfunction 13.
0124-4