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
Test Step 2. Check for Faulty Left
Do Not Operate in High
Headlight Wiring.
Beam - Continued
1. Disconnect the connector AA-C1
(WP 0009, Figure 290) from left
headlight.
2. Using digital multimeter, test for
Voltage Between 18 and 26 Volts -
voltage between connector AA-
Replace left headlight lamp assembly
C1 (WP 0009, Figure 290) termi-
(WP 0197).
nal 1 and terminal 4. Voltage
Proceed to step 3.
should be 18 to 26 volts.
Voltage Less Than 18 Volts -
Replace front lighting harness (WP
0196).
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 3. Check for Faulty Right
Headlight Wiring.
1. Disconnect the connector AA-C2
(WP 0009, Figure 291) from right
headlight.
2. Using digital multimeter, test for
Voltage Between 18 and 26 Volts -
voltage between connector AA-
Replace right headlight lamp assem-
C2 (WP 0009, Figure 291) termi-
bly (WP 0197).
nal 1 (Gnd) and terminal 4. Volt-
Proceed to step 3.
age should be 18 to 26 volts.
Voltage Less Than 18 Volts -
Replace front lighting harness (WP
0196).
Connect the connector AZ-C2 (WP
0009, Figure 388) 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.
0023-20
