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
Resistance 5.0 Ohms or Greater -
Do Not Operate in High
Replace cab lower wiring harness
Beam - Continued
(WP 0265).
Connect the rear chassis wiring har-
ness connector FA-C41 (WP 0009,
Figure 21) to circuit breaker box wiring
connector R-C5 (WP 0009, Figure 22)
(WP 0239).
Install head lamp relay (WP 0009, Fig-
ure 298) to head lamp relay socket
(WP 0009, Figure 299).
Connect the connector AZ-C1 (WP
0009, Figure 387) to left headlight and
install headlight assembly (WP 0197).
Proceed to step 3.
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 12. Check for Faulty Head
lamp Relay.
1. Remove jumper wire between
head lamp relay socket (WP
0009, Figure 299) terminals E14
and E13.
2. Install head lamp relay (WP 0009,
Figure 298) to head lamp relay
socket (WP 0009, Figure 299).
3. Connect the rear chassis wiring
harness connector FA-C41 (WP
0009, Figure 21) to circuit breaker
box wiring connector R-C5 (WP
0009, Figure 22) (WP 0239).
4. Connect the control indicator har-
ness connector PE-C11 (WP
0009, Figure 287) to cab lower
wiring harness connector P-C11
(WP 0009, Figure 286) (WP
0283).
5. Remove dimmer relay (WP 0009,
Figure 296) from dimmer relay
socket (WP 0009, Figure 297).
6. Turn battery disconnect switch to
the ON position.
0023-26
