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TM 10-3930-643-20
ELECTRICAL SYSTEM TROUBLESHOOTING AND MAINTENANCE. (cont)
5-8.
Instrument Panel Troubleshooting. (cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
k.
ENGINE WATER TEMPERATURE GAGE NOT OPERATING.
Step 1.
Remove socket and check engine coolant temperature gage light
bulb.
If the bulb is burned out, replace, refer to paragraph
NOTE
Before performing continuity tests, refer to paragraph 2-13
i n i t i a l s e t u p i n s t r u c t i o n s.
Step 2.
5-25.
f o r
Remove bezel assembly and engine coolant temperature gage.
Test the continuity of gage.
Connect multimeter to terminals
in the back of gage.
If the multimeter needle does not move, the circuit does not have
c o n t i n u i t y.
Replace engine coolant temperature gage,
r e f e r t o
paragraph 5-16.
Step 3. Connect instrument gage tester.
Use instructions provided with
gage tester. Test values for engine temperature gage should
read: Run (green) zone, Low 160 degrees F, High 212 degrees F.
Resistance (ohms), Low 168, High 83.
System voltage, 24V.
5-54
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