TM 5-3805-296-23-1
0038
Table 1. 1273 Module Communication Diagnostic Code Continued.
038
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
5. Using digital multimeter
1273-09 Chassis Control
Voltage 18 to 25 V at All Test Points
(WP 0540), test for voltage
Module Abnormal Update
Proceed to Test Step 4.
between the following:
Rate Continued
Voltage 18 to 25 V at Only One or Two
a. Connector W-C13 terminal 1
Test Points Replace main cab wiring
(WP 0012, Figure 89) and
harness (WP 0505).
ground.
Proceed to Test Step 13.
Voltage Less Than 18 V at All Test
b. Connector W-C13 terminal 23
Points Proceed to Test Step 9.
(WP 0012, Figure 89) and
ground.
c.
Connector W-C13 terminal 47
(WP 0012, Figure 89) and
ground.
Test Step 4. Test Ground Circuit
Function at Transmission/Chassis
ECM.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Using digital multimeter
Resistance 5.0 Ohms or Less at All
(WP 0540), measure resistance
Test Points Proceed to Test Step 5.
between the following:
Resistance 5.0 Ohms or Less at Only
a. Connector W-C13 terminal 2
One or Two Test Points Replace
(WP 0012, Figure 89) and
main cab wiring harness (WP 0505).
ground.
Proceed to Test Step 13.
Resistance Greater Than 5.0 Ohms at
b. Connector W-C13 terminal 22
All Test Points Proceed to Test
(WP 0012, Figure 89) and
Step 10.
ground.
c.
Connector W-C13 terminal 46
(WP 0012, Figure 89) and
ground.
Test Step 5. Test Main Cab Wiring
Harness for High Resistance or
Open.
1. Disconnect connector W-C12
(WP 0012, Figure 88) from
transmission/chassis ECM.
2. Disconnect MSD from connector
CG-C3 (WP 0012, Figure 96).
3. Remove upper and lower plenum
from ROPS (WP 0504).
4. Disconnect connector P-C1
(WP 0012, Figure 253)
from connector W-C7
(WP 0012, Figure 252).
0038-4