TM-9-2320-272-24-1

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4

JUNE 1998

TM-9-2320-272-24-1 - Page 233 of 1015

TM 9-2320-272-24-1

Table 2-3. Electrical Troubleshooting (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

INDICATOR, GAUGE, AND WARNING SYSTEM

27. ALL GAUGES INOPERATIVE

NOTE

If STE/ICE is available, perform NG31 - Gauge Test (para. 2-24).

Test 1. Test instrument cluster voltage feed.

Step 1.

Place battery switch to OFF position.

Step 2.

Disconnect lead 5A at circuit breaker.

Step 3.

Place battery switch to ON position.

Step 4.

Set multimeter to 50-volt range.

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