TM 5-3805-298-23-1
0048
Table 1. 41 8VDC Supply Voltage Diagnostic Codes - Continued.
048
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
4. Using MSD, check for active
Diagnostic Code 41-4 8 VDC Supply
41-4 8VDC Supply Voltage Is
diagnostic codes (WP 0008).
Voltage Below Normal Remains
Below Normal or the Voltage
Active - Proceed to Test Step 3.
Is Shorted Low - Continued
Diagnostic Code 41-4 8 VDC Supply
Voltage Below Normal Becomes
Inactive - Replace governor control
pedal assembly (WP 0226).
Proceed to Test Step 5.
Test Step 3. Test for Shorted Lower
Cab Wiring Harness.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Remove right lower cab access
panels (WP 0347).
3. Disconnect connector EN-C2
(WP 0012, Figure 12) from
connector C-C18 (WP 0012,
Figure 13).
4. Using digital multimeter
Continuity - Replace lower cab wiring
(WP 0174), test for continuity
harness (WP 0291).
between connector C-C18
Proceed to Test Step 5.
(WP 0012, Figure 13) terminal 15
No Continuity - Proceed to step 5.
and terminal 19.
5. Using digital multimeter
Continuity - Replace lower cab wiring
(WP 0174), test for continuity
harness (WP 0291).
between connector C-C18
Proceed to Test Step 5.
(WP 0012, Figure 13) terminal 15
No Continuity - Proceed to Test Step 4.
and ground.
Test Step 4. Test for Shorted Engine
Wiring Harness.
1. Remove right engine access panel
(WP 0348).
2. Disconnect connector EN-C1
(WP 0012, Figure 11) from engine
ECM J1.
3. Using digital multimeter
Continuity - Replace engine wiring
(WP 0174), test for continuity
harness (WP 0299).
between connector EN-C1
Proceed to Test Step 5.
(WP 0012, Figure 11) terminal 43
No Continuity - Proceed to step 4.
and terminal 33.
4. Using digital multimeter
Continuity - Replace engine wiring
(WP 0174), test for continuity
harness (WP 0299).
between connector EN-C1
Proceed to Test Step 5.
(WP 0012, Figure 11) terminal 43
No Continuity - Replace engine ECM
and ground.
(WP 0265).
0048-5