3-222
TM 9-2350-261-20-1
1. Measure resistance between lead ends from
ON/OFF/START switch terminals 21 (1) and
14 (2).
2. Does multimeter read 0 ohms?
Y E S
1. Replace heater ON/OFF/START switch
(page 32-42).
2. Verify no faults found.
1. Remove heater harness plug (1) from heater control
jack (2).
2. Measure voltage between heater control jack (2) pin
A (3) and ground with HEATER switch on
START.
3. Does multimeter read more than 17 volts?
1. Repair heater switch
jumper lead between
terminal 21 and 14
(page 14-3).
2. Verify no faults found.