AIR INTAKE FAN AND SOLENOID CIRCUIT. (Cont)

TM 9-2350-238-20-1

2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).

Make sure MASTER switch is OFF before repairing

electrical circuits. Failure to observe this warning

could result in injury to personnel.

Step 4.

Disconnect the other lead 344 from AIR INTAKE FAN switch. Place red

probe in lead 344. Ground black probe. Set MASTER switch ON. Set AIR

INTAKE FAN switch ON. If multimeter indicates about 24 volts, go to step

5. If multimeter indicates no voltage, replace AIR INTAKE FAN switch.

Refer to page 2-1053. Set MASTER switch OFF. Set AIR INTAKE FAN

switch OFF. Connect lead.

Step 5.

Set MASTER switch ON. Set AIR INTAKE FAN switch ON. If indicator

light operates, go to step 9. if indicator light does not operate, go to step 6.

Set MASTER switch OFF. Set AIR INTAKE FAN switch OFF.

2-318