Table 1. Auxiliary Circuits Troubleshooting Procedures.

TM 9-2320-303-24-1

Table 1. Auxiliary Circuits Troubleshooting Procedures.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

None Of The Auxiliary Lights Or Accessory 4. Disconnect auxiliary lights If +12 VDC is present, go to step

Circuits Operate - Continued.

accessory lockout relay. Check 5. If no voltage is present, check

for +12 VDC at connector 87. lead 420JB for continuity. If no

continuity is indicated, repair lead

420JB. If voltage is still not

present at connector 87, replace

auxiliary lights power relay (WP

5. Disconnect auxiliary lights If +12 VDC is present, go to step

accessory lockout relay. Check 6. If no voltage is present, check

for +12 VDC at connector 85. start/auxiliary 15A fuse. If

defective, replace 15A fuse (WP

0072 00). Check for continuity in

lead 71AA and lead 71A. If no

continuity is indicated, repair lead

71AA and lead 71A. If voltage is

still not present at connector 85,

replace vehicular light switch

6. Disconnect auxiliary lights

If continuity is indicated, go to

accessory lockout relay. Check

step 7. If no continuity is

for continuity from connectors

indicated, repair connector lead

30 and 86 to ground.

30 or connector lead 86 to ground.

7. Check for +12 VDC

at If +12 VDC is not present, check

auxiliary light power bus.

for continuity in lead 420JD. If

continuity is indicated, replace

auxiliary lights power relay (WP

No Power To Auxiliary Heater Fan Power Disconnect

auxiliary

lights If no continuity is indicated, repair

Relay.

accessory lockout relay and heater lead 71AA.

fan power relay. Check for

continuity in lead 71AA.