TM 5-3805-293-23-2
0023
Table 1. Cab Electrical Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. One or Both Headlights
Connect the connector AZ-C1 (WP
Do Not Operate in High
0009, Figure 387) to left headlight and
Beam - Continued
install headlight assembly (WP 0197).
Proceed to step 3.
Resistance 5.0 Ohms or Greater -
Proceed to Test Step 16.
3. Turn control indicator switch to
Headlight or Headlights Do Not
position SER. DRIVE, dimmer
Operate in High Beam - Repeat trou-
switch to high beam (TM 5-3805-
bleshooting from the beginning.
293-10) and verify headlights
Both Headlights Operate in High
operate in high beam.
Beam - Troubleshooting complete.
Test Step 16. Check for Open Front
Lighting Wiring Harness.
1. Disconnect the front work light
wiring harness connector CL-C26
(WP 0009, Figure 293) from front
lighting wiring harness connector
A-C3 (WP 0009, Figure 292) (WP
0196).
2. Disconnect the front work light
wiring harness connector CL-C24
(WP 0009, Figure 393) from front
lighting wiring harness connector
A-C4 (WP 0009, Figure 394) (WP
0196).
3. Using digital multimeter, measure
Resistance Less Than 5.0 Ohms -
resistance between front lighting
Replace front work light wiring har-
wiring harness connector A-C3
ness (WP 0183).
(WP 0009, Figure 292) terminal 4
Remove jumper wire between AA-C2
and connector A-C4 (WP 0009,
(WP 0009, Figure 291) terminals 4
Figure 394) terminal 2. Resis-
and 2.
tance should be less than
Connect cab lower wiring harness
5.0 ohms.
connector P-C4 (WP 0009, Figure 45)
to dash wiring harness connector PF-
C1 (WP 0009, Figure 44) (WP 0276).
Install dimmer relay (WP 0009, Figure
296) to dimmer relay socket (WP
0009, Figure 297).
Connect the connector AA-C2 (WP
0009, Figure 291) to right headlight.
Connect the connector AZ-C1 (WP
0009, Figure 387) to left headlight and
install headlight assembly (WP 0197).
Proceed to step 4.
0023-29