Table 1. Indicator, Gauges, and Warning System Troubleshooting - continued

TM 9-2320-361-24-1

0014 00

INDICATORS, GAUGES, AND WARNING SYSTEM TROUBLESHOOTING (Contd)

Table 1. Indicator, Gauges, and Warning System Troubleshooting (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

NOTE

2. ENGINE

TEMPERATURE

If STE/ICE-R is available, perform

GAUGE

NG31 gauge test (WP 0018 00).

INOPERATIVE

Test 1. Test coolant temperature

gauge operation.

1. Disconnect lead 33 from

coolant temperature sending

unit.

2. Turn power accessory switch

to ON position.

3. Coolant temperature gauge

should read minimum

temperature.

1. If coolant temperature gauge

4. Touch contact end of lead 33

operates properly, go to test 3 and

to frame ground. Coolant

check sending unit.

temperature gauge should

read maximum temperature.

2. If coolant temperature gauge does

not operate properly, go to test 2.

Test 2. Test battery voltage into

temperature gauge. Go to

WP 0014 00, table 1,

malfunction 1, test 2.

Test 3. Test temperature-sending

unit.

1. Allow coolant to cool.

2. Set multimeter to RX 1 scale.

3. Start engine

(TM 9-2320-361-10).

1. If resistance does not show an

4. Connect multimeter negative

decrease as temperature increases,

lead to engine ground and

replace temperature sending unit

positive lead to sending unit.

(WP 0107 00).

Resistance reading should

decrease as engine coolant

2. If resistance does show a decrease

temperature increases.

as temperature increases, go to

test 4.

Test 4. Check continuity of lead 33.

1. Disconnect lead 33 from

temperature gauge.

2. Set multimeter to RX 1 scale.

3. Touch negative lead of

multimeter to contact end of

lead 33 at sending unit.

1. If continuity is not present, repair

4. Touch positive lead of

or replace lead 33 (WP 0090 00).

multimeter to other end of

lead 33.

2. If continuity is present, replace

temperature gauge (WP 0095 00).

0014 00-4