TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1

(3) MASTER WARNING LIGHT FAILS TO OPERATE WHEN ENGINE OVERHEATS.

TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1_198

TM-9-2350-287-20-1 Carrier Ammunition Tracked M992A21 (2350-01-352-3021) EIC:AE6 Manual
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TM 9-2350-287-20-1 2-19. TROUBLESHOOTING CHART (continued). h. LIGHTS (continued). (3) MASTER WARNING LIGHT FAILS TO OPERATE WHEN ENGINE OVERHEATS. All other lights operate (continued). B. 1. Install light bulb in steering shaft MASTER warning light assembly, and light bulb and lens in driver’s portable instrument panel MASTER warning light indicator. 2. Disconnect wire harness 12260287 from portable instrument panel harness and from driver’s bulkhead. 3. Place one lead of multimeter on socket H of harness 12260287 at portable instrument panel connector and place the other lead at pin N of harness 12260287 at driver’s bulk- head connector. 4. Check for continuity. Is continuity indicated? Repair 509 or replace wire harness 12260287 (para 7-56) Verify problem C. 1. Reconnect harness 12260287 at portable instrument panel, 2. Disconnect harness 12268418-1 from engine disconnect bracket. 3. Place one lead of multimeter on socket N of harness 12268418-1 at engine bulkhead connector, and place the other lead of muti- meter on socket H of harness 12268418-1 at engine disconnect bracket connector. 4. Check harness 12268418-1 for continu- ity. Is continuity indicated? Continued on next page 2-145

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