ENGINE COOLANT TEMPERATURE INDICATOR CIRCUIT. (Cont)

TM 9-2350-238-20-1

2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).

To access engine, remove hull engine compartment deck assembly lid.

Step 4.

Refer to page 2-935. Disconnect lead 33 from engine coolant temperature

transmitter. Engine must be at operating temperature. Place red probe in

input terminal of engine coolant temperature transmitter. Ground black

probe. If multimeter indicates between 900 and 1000 ohms, go to step 5.

If multimeter indicates less than 900 ohms or more than 1000 ohms,

replace engine coolant temperature transmitter. Refer to page 2-626.

Connect lead 33 to engine coolant temperature transmitter.

To access engine disconnect, remove hull transmission compartment deck

Step 5.

assembly. Refer to page 2-938. Disconnect wiring harness at engine

disconnect. Engine must be at operating temperature. Place red probe on

pin L (lead 33) of plug. Ground black probe. If multimeter indicates

between 900 and 1000 ohms, go to step 6. If multimeter indicates less

than 900 ohms or more than 1000 ohms, repair lead 33 between engine

disconnect and engine coolant temperature transmitter. Refer to page 2-

371. Connect wiring harness at engine disconnect.

2-156