TM 9-2350-287-20-1
2-19. TROUBLESHOOTING CHART (continued).
h. LIGHTS (continued).
(4) ENGINE LOW LEVEL COOLANT LIGHT FAILS TO
OPERATE WHEN PRESSED-TO-TEST. All other
lights operate (continued).
B.
1. Install light bulb to press-to-test indicator
on driver's portable instrument panel.
2. Remove four screws and cover panel
from portable instrument panel.
3. Disconnect wire 27 of harness 12260298
from wire 27 of coolant low level light.
4. Place red lead of multimeter in wire 27 of
harness 12260298 and ground black lead.
5. Turn MASTER switch ON (refer to TM 9-
2350-287-10).
6. Check for 24 ± 3 vdc.
7. Turn MASTER switch OFF (refer to TM 9-
2350-287-10).
Is voltage indicated?
Replace wire 27 or replace harness
12260298 (para 7-7). Verify problem
is solved.
C. 1. Reconnect wire 27 of harness 12260298
to coolant low level coolant light.
2. Disconnect wire 352A of harness
12260298 from wire 352A of coolant low
level light.
3. Insert a grounded jumper wire into wire
352A of coolant low level light.
4. Turn MASTER switch ON (refer to TM 9-
2350-287-10).
5. Press press-to-test button.
Continued on next page
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