WARNING HORN AND ENGINE-XMSN TTEMP-PRESS WARNING LIGHT CIRCUIT. (Cont)

TM 9-2350-238-20-1

2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).

To access transmission oil thermostatic switch, remove transmission deck

Step 2.

lid assembly. Refer to page 2-938. Disconnect lead 509 from transmission

oil thermostatic switch. Start engine and run at 800 rpm. If warning horn

and ENGINE-XMSN TEMP-PRESS warning light stop operating, stop

engine and replace transmission oil thermostatic switch. Refer to page 2-

626. If warning horn and ENGINE-XMSN TEMP-PRESS warning light do

not stop operating, go to step 3. Connect lead 509 to transmission oil

thermostatic switch.

Disconnect lead 509 from engine coolant high-temperature warning switch.

Step 3.

Start engine and run at 800 rpm. If warning horn and ENGINE-XMSN

TEMP-PRESS warning light stop operating, stop engine and replace engine

coolant high-temperature warning switch. Refer to page 2-626. If warning

horn and ENGINE-XMSN TEMP-PRESS warning light do not stop

operating, repair lead 509. Refer to page 2-371. Connect lead 509 to

engine coolant high-temperature warning switch.

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