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
Using jumper wire, measure
1.
If continuity is present, replace
42.
Open Circuit
resistance (Volume 3,
engine interface wiring
Between Connector
harness. (Volume 4,
H02 Pin and ECU
WP 0369) between connector
20A F8 fuse socket
WP 0509) Restore machine to
H02 pin (Volume 5, WP 0800,
1.
original condition.
Figure 41) and ECU 20A F8
fuse socket 1. (Volume 5,
2.
If continuity is not present,
WP 0800, Figure 154) Note
proceed to Malfunction 43.
reading.
1.
Remove center top cover.
43.
Connector X41 Has
Damage or Loose
(Volume 4, WP 0589)
Pins/Sockets.
2.
Disconnect the following:
a. Connector X3. (Volume
5, WP 0800, Figure 84)
b. Connector X4. (Volume
5, WP 0800, Figure 85)
c. Connector X41.
(Volume 5, WP 0800,
Figure 102)
d. Connector X42.
(Volume 5, WP 0800,
Figure 103)
3.
Unmount and reposition the
cab wiring harness connectors
for service. (Volume 3,
WP 0312)
4.
Visually inspect connector X41
1.
If damaged or has loose pins/
for damage and loose pins/
sockets, replace machine
sockets.
wiring harness for socket side
of connector (Volume 4,
WP 0516) or replace cab
wiring harness for pin side of
connector. (Volume 4,
WP 0504) Restore machine to
original condition.
2.
If not damaged and does not
have loose pins/sockets,
proceed to Malfunction 44.
0124-15