APU CONTROL BOX HIGH AIR TEMP INDICATOR DOES NOT LIGHT (cont)

APU CONTROL BOX HIGH AIR TEMP INDICATOR DOES NOT LIGHT - TM-9-2350-292-20-1_164

APU CONTROL BOX HIGH AIR TEMP INDICATOR DOES NOT LIGHT (cont) - TM-9-2350-292-20-1_166

TM-9-2350-292-20-1 Carrier Ammunition Tracked M992A1(NSN 2360-01-362-3021) EIC:AE6 Manual
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TM 9--2350--292--20--1 0023 00--2 APU CONTROL BOX HIGH AIR TEMP INDICATOR DOES NOT LIGHT -- CONTINUED 0023 00 CONTINUED FROM STEP A no yes CONTINUED ON NEXT PAGE Go to Step D. Is continuity present? no yes 1. Disconnect the temporary jumper wire from harness 3W704 lead 493. 2. Remove APU cover (WP 0413 00). 3. Remove lead 3W705 from APU (WP 0645 00). 4. Place one multimeter lead on each end of lead 3W705. Check for continuity? Replace lead 3W705 (WP 0645 00). Verify fault is corrected. B 1. Reconnect harness 4W700 connector P1 at the APU control box. 2. Open APU door (TM 9--2350--292--10). 3. Disconnect lead 3W705 from harness 3W704 lead 493. 4. Temporarily connect a jumper wire from harness 3W704 lead 493 connector to vehicle ground. 5. Turn MASTER switch ON (TM 9--2350--292--10). 6. Turn FUEL SHUTOFF switch ON (TM 9--2350--292--10). 7. Observe HIGH AIR TEMP indicator light (TM 9--2350--292--10). 8. Turn FUEL SHUTOFF and MASTER switches OFF. Did HIGH AIR TEMP indicator light? C Replace APU high air temperature switch (WP 0633 00). Verify fault is corrected.

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