TM 9-2350-247-20-1
COOLANT HEATER MALFUNCTIONSContinued
0086 00
4BY
1. Measure resistance between lead ends from circuit breaker
terminal 17 (1) to indicator light terminal 3 (2).
2. Does multimeter read 0 ohms?
YES
NO
4BYN
1. Repair/replace faulty lead
(WP 0294 00).
2. Verify no faults found.
5BY
1. Replace indicator light assembly (WP 0472 00).
2. Verify no faults found.
CY
1. Remove heater harness plug (1) from heater control box jack (2).
2. Measure voltage between heater control box jack (2) pin C (3)
and ground with HEATER switch on START.
3. Does multimeter read at more than 17 volts?
YES
NO
GO TO DY (PAGE 0086 00-5)
0086 00-4