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.
Remove center top cover.
54.
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)
4.
Visually inspect connector X4
1.
If damaged or has loose
for damage or loose sockets/
sockets/pins, replace cab
pins.
wiring harness for socket side
of connector (Volume 4,
WP 0504) or machine wiring
harness for pin side of
connector. (Volume 4,
WP 0516)
2.
If not damaged or does not
have loose sockets/pins,
proceed to Malfunction 55.
Using a jumper wire, measure
1.
If less than 1 kohm, replace
55.
Short Circuit
resistance (Volume 3,
machine wiring harness.
Between Connector
H01 Pin 3 and
WP 0369) between connector
(Volume 4, WP 0516) Restore
Connector X4 Pin
H01 pin 3 (Volume 5,
machine to original condition.
28.
WP 0800, Figure 40) and
2.
If greater than 1 kohm, replace
connector X4 pin 28. (Volume
cab wiring harness. (Volume 4,
5, WP 0800, Figure 85) Note
WP 0504) Restore machine to
reading.
original condition.
END OF WORK PACKAGE
0124-19/20 blank