TM 5-3805-293-23-2
0023
Table 1. Cab Electrical Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. One or Both Headlights
2. Using digital multimeter, measure
Continuity - Replace cab lower wiring
Do Not Operate in Low
for continuity between dimmer
harness (WP 0266).
Beam - Continued
relay socket (WP 0009, Figure
Install dimmer relay (WP 0009, Figure
297) terminal D11 and terminal
296) to dimmer relay socket (WP
E11. There should be no continu-
0009, Figure 297).
ity.
Connect the front work light wiring
harness connector CL-C18 (WP 0009,
Figure 294) to cab lower wiring har-
ness connector P-C61 (WP 0009, Fig-
ure 295) (WP 0183).
Connect the connector AZ-C1 (WP
0009, Figure 387) to left headlight and
install headlight assembly (WP 0197).
Proceed to step 3.
No Continuity - Proceed to Test Step
9.
3. Turn control indicator switch to
Headlight or Headlights Do Not
position SER. DRIVE, dimmer
Operate in Low Beam - Repeat trou-
switch to low beam (TM 5-3805-
bleshooting from the beginning.
293-10) and verify headlights
Both Headlights Operate in Low
operate in low beam.
Beam - Troubleshooting complete.
Test Step 9. Check for Open Cab
Lower Wiring Harness.
1. Connect jumper wire between P-
C61 (WP 0009, Figure 295) termi-
nals 5 and 8.
0023-41
