RESISTANCE TEST -726280459

TM 9-2320-364-20-1

Allow engine to cool before performing troubleshooting maintenance. If necessary use insulated pads

and gloves. Hot engine components will burn and cause injury to personnel.

Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical

circuits, a direct short may result. Damage to equipment, injury or death to personnel may occur.

RESISTANCE TEST

(1) Remove ten screws and sunshield

from instrument panel.

(2) Pull top of instrument panel

towards steering wheel.

(3) Disconnect vernier control harness

connector MC38.

(4) Are 10,000 ohms or less present

between wires 916 and 952 at TPS

harness connector MC6, terminals

A and C?

(a) If there are 10,000 ohms or less

present, repair wire(s) 916

and/or 952 (see schematic

Fig 2-1) or notify DS

Maintenance.

(b) If there are more than 10,000

ohms present, go to Step (5)

below.

(5) Are there 10,000 ohms or less

present between wire 417 at TPS

harness connector MC6, terminal B

and a known good ground?

(a) If there are 10,000 ohms or less

present, repair wire 417 (see

schematic Fig 2-1) or notify DS

Maintenance.

(b) If there are more than 10,000

ohms present, go to Step 5 of

this Fault.

VOLTAGE TEST

(1) Set multimeter select switch to

volts dc.

(2) Connect positive (+) multimeter lead

to vernier control harness connector

MC38, terminal C.

(3) Connect negative (- ) multimeter lead

to vernier control harness connector

MC38, terminal A.

(4) Turn ON ENGINE switch

(TM 9-2320-364-10).

(5) Are there more than or equal to 4.7

vdc present on wire 916 to wire 952

at vernier control harness connector

MC38, terminals C to A?

(a) If there are less than 4.7 vdc

present, turn OFF ENGINE switch

and repair wires 916 and/or

952 (see schematic Fig 2-1) or

notify DS Maintenance.

(b) If there are 4.7 vdc or more

present, turn OFF ENGINE switch

and go to Step 6 of this Fault.

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