JUNCTION BOX WIRING HARNESS. - TM-5-4120-384-140150

TM5-4120-384-14

4-26.

JUNCTION

BOX.

Continued

(3)

See

paragraph

4-21c

and

install

control

module.

(4) Install top front cover on F18H-3S

and

F18H-1S

top

cover on F18H-S3A and F18H-3SB (para 4-11).

(5)

Connect

power

source.

4-37. JUNCTION BOX WIRING HARNESS.

Disconnect input power from the air conditioner

before performing maintenance on any part of the

electrical system.

The voltages used can be lethal.

Inspect.

(See

fig.

4-23.)

(1)

Disconnect

power

source.

(2)

See

paragraph

4-21a

and

remove

control

module.

(3) Remove top front cover on F18H-3S and F18H-1S or top

cover on F18H-3SA and F18H-3SB (para 4-11).

(4)

Remove seven screws

and

lock

washers

and

carefully

slide

junction

box out of unit.

(5) Inspect connector

for

loose,

damaged

missing

pins.

Replace if defective.

(6) Check individual wires for loose solder connections,

loose terminal lugs, cut or frayed insulation, cut or broken wires.

Removal.

Tag and disconnect

individual

wires

and

connectors

from unit. (See fig. 4-23.)

Continuity test

c. T e s t i n g . S e e w i r i n g d i a g r a m f i g u r e 4 - 4 .

Replace or repair wires with

no continuity.

individual wires.

Repair.

(1)

See

paragraph

4-20

for

general

wire

repair

instructions.

(2) See table 4-3 Wire List for wire lengths

and

terminal

information when individual wires are replaced.

Replace.

Replace

individual

wires,

terminals

connectors

defective.

4-78

Change 2