TM 5-3805-298-23-1
0052
Table 1. 168 Electrical System Voltage Diagnostic Codes - Continued.
052
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
7. Turn ignition switch and battery
168-1 Electrical System
disconnect switch to OFF position
Voltage Low - Continued
(TM 5-3805-298-10).
8. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0174), measure resistance
Proceed to Test Step 10.
between connector C-C18
Resistance Greater Than 5.0 Ohms
(WP 0012, Figure 13) terminal 8
Proceed to step 9.
and terminal 14.
9. Remove engine ECM fuse from
fuse panel (TM 5-3805-298-10).
10. Using digital multimeter
Resistance 5.0 Ohms or Less
Replace lower cab wiring harness
(WP 0174), measure resistance
(WP 0291).
between terminals of engine ECM
fuse.
Proceed to Test Step 11.
Resistance Greater Than 5.0 Ohms
Replace engine ECM fuse (TM 5-3805-
298-10).
Proceed to Test Step 11.
Test Step 10. Test Voltage of Battery
Supply Circuits at Engine ECM.
1. Connect connector EN-C2
(WP 0012, Figure 12) to connector
C-C18 (WP 0012, Figure 13).
2. Turn battery disconnect switch and
ignition switch to ON position
(TM 5-3805-298-10).
3. Using digital multimeter
Voltage 18 to 26 V Proceed to step 4.
(WP 0174), test for voltage
Voltage Less Than 18 V Replace
between EN-C1 (WP 0012,
engine wiring harness (WP 0299).
Figure 11) terminal 7 and ground.
Proceed to Test Step 11.
4. Using digital multimeter
Voltage 18 to 26 V Proceed to step 5.
(WP 0174), test for voltage
Voltage Less Than 18 V Replace
between EN-C1 (WP 0012,
engine wiring harness (WP 0299).
Figure 11) terminal 8 and ground.
Proceed to Test Step 11.
Voltage 18 to 26 V Proceed to step 6.
5. Using digital multimeter
(WP 0174), test for voltage
Voltage Less Than 18 V Replace
between EN-C1 (WP 0012,
engine wiring harness (WP 0299).
Figure 11) terminal 15 and ground.
Proceed to Test Step 11.
Voltage 18 to 26 V Replace engine
6. Using digital multimeter
ECM (WP 0265).
(WP 0174), test for voltage
between EN-C1 (WP 0012,
Proceed to Test Step 11.
Figure 11) terminal 16 and ground.
Voltage Less Than 18 V Replace
engine wiring harness (WP 0299).
Proceed to Test Step 11.
0052-8
