TM 9-2350-247-20-1
HI TEMP DIFF OIL INDICATOR MALFUNCTIONS (M548A1)—Continued
0058 00
4CY
1. Repair power harness circuit 27K (WP 0294 00).
2. Verify no faults found.
DY
1. Turn MASTER POWER SWITCH OFF.
2. Remove circuit 328/27K plug (1) from HI TEMP DIFF OIL
indicator (2).
3. Measure resistance between circuit 328 and ground.
4. Does multimeter read more than 0 ohms?
YES
NO
DYN
1. Remove jumper wire.
2. Install plug on differential oil high
temperature thermostatic switch in
engine compartment.
3. Replace HI TEMP DIFF OIL
indicator assembly (WP 0264 00).
4. Verify no faults found.
2DY
1. Remove engine harness plug (1) from power harness jack (2) at
battery box.
2. Measure resistance between engine harness plug (1) pin A (3) and
ground.
3. Does multimeter read 0 ohms?
YES
NO
2DYN
1. Remove jumper wire.
2. Install plug on differential oil high
temperature thermostatic switch in
engine compartment.
3. Install indicator bulb, gaskets, and
lens.
4. Repair engine harness circuit 328
(WP 0294 00).
5. Verify no faults found.
0058 00-5
