TM 5-3805-298-23-1
0123
Table 1. Blackout Light Does Not Operate - Continued.
0123
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. Using digital multimeter
Resistance 5.0 Ohms or Less
Blackout Light Does Not
Proceed to Test Step 3.
(WP 0174), measure resistance
Operate - Continued
between terminals of lighting fuse.
Resistance Greater Than 5.0 Ohms
Replace lighting fuse (WP 0012,
Figure 44, Item 8).
Proceed to Test Step 7.
Test Step 3. Test for Open Wiring
Harness.
1. Connect jumper wire between
terminal 11 of connector fuse
module 1 (WP 0012, Figure 44)
and ground.
2. Remove right lower cab access
panels (WP 0347).
3. Disconnect connector LE-C1
(WP 0012, Figure 87) from
connector C-C10 (WP 0012,
Figure 86).
4. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0174), measure resistance
Replace front frame wiring harness
between connector C-C10
(WP 0301).
(WP 0012, Figure 86) terminal 8
Proceed to Test Step 12.
and ground.
Resistance Greater Than 5.0 Ohms
Proceed to Test Step 4.
Test Step 4. Test for Open Wiring
Harness.
1. Disconnect connector HN-C1
(WP 0012, Figure 66) from
connector C-C1 (WP 0012,
Figure 65).
2. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0174), measure resistance
Proceed to Test Step 5.
between connector HN-C1
Resistance Greater Than 5.0 Ohms
(WP 0012, Figure 66) terminal 21
Proceed to Test Step 6.
and terminal 13.
0123-3
