TM 5-3805-296-23-1
0038
Table 1. 1273 Module Communication Diagnostic Code Continued.
038
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
5. Disconnect connector W-C16
1273-09 Chassis Control
(WP 0012, Figure 87)
Module Abnormal Update
from connector CL-C3
Rate Continued
(WP 0012, Figure 86).
6. Connect jumper wire between
terminal 1 and terminal 2
of connector W-C16
(WP 0012, Figure 87).
7. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Replace transmission/chassis ECM
between connector W-C12
(WP 0495).
terminal 7 and terminal 8
Proceed to Test Step 13.
(WP 0012, Figure 88).
Resistance Greater Than 5.0 Ohms
Replace main cab wiring harness
(WP 0505).
Proceed to Test Step 13.
Test Step 6. Test Fuse F20.
1. Install new fuse F20 on circuit
breaker panel (TM 5-3805-296-
10).
2. Turn battery disconnect switch and
ignition switch to ON position
(TM 5-3805-296-10).
3. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
4. Remove fuse F20 from circuit
breaker panel
(TM 5-3805-296-10).
5. Using digital multimeter
Continuity Install fuse F20 on circuit
(WP 0540), test for continuity
breaker panel (TM 5-3805-296-10).
between terminals of fuse F20.
Proceed to Test Step 13.
No Continuity Discard fuse F20.
Proceed to Test Step 7.
Test Step 7. Test for Shorted Main
Cab Wiring Harness.
1. Disconnect connector W-C12
(WP 0012, Figure 88) from
transmission/chassis ECM.
2. Disconnect connector W-C13
(WP 0012, Figure 89) from
transmission/chassis ECM.
3. Disconnect connector CG-C1
(WP 0012, Figure 283)
from connector W-C8
(WP 0012, Figure 282).
0038-5
