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

Test 1. Test lamp.

7. FRONT WHEEL

DRIVE INDICATOR

1. Place power accessory switch

LIGHT INOPERATIVE

to ON position and service

light switch to ON position.

2. Disconnect lead 27A from

indicator lamp.

3. Set multimeter to RX 1 scale.

4. Touch positive lead of

1. If continuity is present, go to test 2.

multimeter to input of

indicator lamp and negative

2. If continuity is not present, replace

lead to frame ground.

indicator lamp (WP 0118 00).

Test 2. Test front wheel drive

indicator lamp input voltage.

1. Disconnect lead 27A from

indicator lamp.

2. Set multimeter to a voltage

range that measures 24 VDC.

3. Connect multimeter positive

lead to 27A and negative lead

1. If voltage is present, reconnect and

to frame ground.

go to test 4.

2. If voltage is not present, go to

test 3.

Test 3. Test input voltage to front

wheel drive lock-in switch.

1. Remove lead 27A from pin A

of lock-in switch.

2. Connect negative lead of

multimeter to frame ground.

3. Touch positive lead of

1. If voltage is present, replace lock-in

multimeter to lead 27A.

switch (WP 0118 00).

Voltage of 24 VDC should be

present.

2. If voltage is not present, repair or

replace lead 27A (WP 0090 00).

TEST 3

FRONT WHEEL

STEP 3

DRIVE LOCK-IN

SWITCH

INDICATOR LAMP

TEST 1

STEP 3

TEST 2

STEP 3

0014 00-14