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
44.
Open Circuit
resistance (Volume 3,
cab wiring harness. (Volume 4,
Between Connector
H02 Pin and
WP 0369) between connector
WP 0504) Restore machine to
Connector X41
original condition.
H02 pin (Volume 5, WP 0800,
Socket 2.
Figure 41) and connector X41
2.
If continuity is not present,
socket 2. (Volume 5,
replace machine wiring
WP 0800, Figure 102) Note
harness. (Volume 4,
reading.
WP 0516) Restore machine to
original condition.
Visually inspect connector X1
1.
If damaged or has loose
45.
Connector X1 Has
sockets/pins, replace machine
Damage or Loose
(Volume 5, WP 0800, Figure
wiring harness. (Volume 4,
Sockets/Pins.
144) for damage or loose
sockets/pins.
WP 0516) Restore machine to
original condition.
2.
If not damaged and does not
have loose sockets/pins,
proceed to Malfunction 46.
1.
Disconnect negative battery
46.
Open Circuit
Between Engine
cable. (Volume 4, WP 0521)
Interface Wiring
Harness Connector
J02 Socket A1 and
Connector X1
Socket C.
2.
Using jumper wire, measure
1.
If less than 10 ohms, proceed
resistance (Volume 3,
to Malfunction 47.
WP 0369) between engine
2.
If greater than 10 ohms,
interface wiring harness
replace machine wiring
connector J02 socket A1
harness. (Volume 4,
(Volume 5, WP 0800, Figure
WP 0516) Restore machine to
47) and connector X1 socket
original condition.
C (Volume 5, WP 0800, Figure
144). Note reading.
Using jumper wire, measure
1.
If less than 10 ohms, proceed
47.
Open Circuit
resistance (Volume 3,
to Malfunction 48.
Between Engine
Interface Wiring
WP 0369) between engine
If greater than 10 ohms,
2.
Harness Connector
interface wiring harness
replace machine wiring
J02 Socket B1 and
connector J02 socket B1
harness. (Volume 4,
Connector X1
(Volume 5, WP 0800, Figure
WP 0516) Restore machine to
Socket D.
47) and connector X1 socket
original condition.
D (Volume 5, WP 0800, Figure
144). Note reading.
0124-16