TM 9-2350-247-20-1HI TEMP DIFF OIL INDICATOR MALFUNCTIONS (M548A1)—Continued 0058 00BY1. Remove engine harness plug (1) from power harness jack (2) atbattery box.2. Is the HI TEMP DIFF OIL indicator still ON?YESNOBYN1. Repair engine harness circuit 328(WP 0294 00).2. Verify no faults found.2BY1. Turn MASTER SWITCH OFF.2. Remove power harness circuit 328/27K plug (1) from HI TEMPDIFF OIL jack (2).3. Measure resistance between indicator jack (2) pins and groundone at a time.4. Did multimeter read 0 ohms for either measurement?YESNO2BYN1. Repair power harness circuit 328/27K (WP 0294 00).2. Verify no faults found.3BY1. Install engine harness plug on power harness jack at battery box.2. Replace HI TEMP DIFF OIL indicator light assembly(WP 0264 00).3. Verify no faults found.0058 00-3
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