TRANSMISSION OIL PRESSURE INDICATOR CIRCUIT. (Cont)

TM 9-2350-238-20-1

Step 2.

Disconnect wiring harness from instrument (gage) panel. Place red probe

on pin F (lead 27) of receptacle. Ground black probe. Set MASTER and

INST switches ON. If multimeter indicates no voltage, repair lead 27 from

INST switch to plug. Refer to page 2-371. If multimeter indicates about

24 volts, repair lead 27 from receptacle to instruments. Refer to page

2-371. Set MASTER and INST switches OFF. Connect wiring harness to

instrument (gage) panel.

Disconnect lead 321 from XMSN OIL PRESS indicator. Place red probe in

Step 3.

lead 321. Ground black probe. Start engine and run at 1000 to 1200 rpm.

If multimeter indicates 0 ohms and does not increase, or increases to more

than 9 ohms, stop engine and go to step 4. If multimeter indicates 0 ohms

and then increases 4 to 9 ohms, increase engine rpm to 1800. Check

resistance and stop engine. If multimeter indicates 9 to 22 ohms, replace

XMSN OIL PRESS indicator. Refer to page 2-571. If multimeter indicates

less than 9 ohms or more than 22 ohms, go to step 4. Connect lead 321

to XMSN OIL PRESS indicator.

2-159