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.
Reconnect engine interface
48.
Short Circuit
wiring harness connector J02
Between Connector
from ECU. (Volume 5,
X1 Socket C and
Ground.
WP 0800, Figure 47)
2.
Measure resistance (Volume
1.
If less than 1 kohm, proceed to
Malfunction 49.
3, WP 0369) between
connector X1 socket C
2.
If greater than 1 kohm,
(Volume 5, WP 0800, Figure
proceed to Malfunction 52.
144) and a known good
ground. Note reading.
1.
Disconnect engine interface
49.
Short Circuit
wiring harness connector J02
Between Connector
from ECU. (Volume 5,
X1 Socket C and
Ground.
WP 0800, Figure 47)
2.
Disconnect engine interface
wiring harness connector
H01. (Volume 5, WP 0800,
Figure 40)
3.
Measure resistance (Volume
1.
If less than 1 kohm, replace
machine wiring harness.
3, WP 0369) between
connector X1 socket C
(Volume 4, WP 0516) Restore
machine to original condition.
(Volume 5, WP 0800, Figure
144) and a known good
If greater than 1 kohm,
2.
ground. Note reading.
proceed to Malfunction 50.
1.
Remove center top cover.
50.
Connector X4 Has
Damage or Loose
(Volume 4, WP 0589)
Sockets/Pins.
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)
0124-17