TM 9-2350-256-20-1
0021 00
Malfunction/Symptom
Troubleshooting Procedure
Transmission Oil Pressure Gage
85. Transmission oil pressure gage does not operate..............................................................................................WP 0053 00
Engine Generator (Dual Voltage System)
86. Generator indicator reads in yellow or lower red region with engine running and
generator cutout switch closed. ....................................................................................... .................................WP 0054 00
87. Generator cutout switch does not operate.........................................................................................................WP 0054 00
Engine Generator (Single Voltage System)
88. Generator indicator reads in yellow or lower red region with engine running and
generator cutout switch closed. ....................................................................................... .................................WP 0055 00
89. Generator cutout switch does not operate.........................................................................................................WP 0055 00
APU Generator System (Dual Voltage)
90. Generator indicator reads in yellow or lower red region with APU engine running and
APU generator switch on. ............................................................................................... .................................WP 0056 00
APU Generator System (Single Voltage)
91. Generator indicator reads in yellow or lower red region with APU engine running and
APU generator switch on. ............................................................................................... .................................WP 0057 00
Generator Indicator Gage
92. Generator indicator gage fails to operate when MASTER switch is on............................................................WP 0058 00
APU Starting System
93. APU starter fails to crank or is hard to start in cold weather. ........................................... .................................WP 0059 00
APU Fuel Solenoid System
94. APU fuel solenoid fails to operate....................................................................................................................WP 0060 00
APU Low Oil Pressure System
95. APU LOW OIL PRESS lamp fails to light when APU is not running............................. .................................WP 0061 00
APU High Air Temperature System
96. APU HIGH AIR TEMP lamp does not light when air temperature is high.......................................................WP 0062 00
APU Engine Oil Pressure Gage Circuit
97. APU ENGINE OIL PRESSURE gage fails to operate .................................................... .................................WP 0063 00
Mechanical Transmission Oil Pressure Light
98. Mechanical transmission oil pressure warning light does not go out with mechanical
transmission operating. ................................................................................................... .................................WP 0064 00
99. Mechanical transmission oil pressure warning light fails to operate with mechanical
transmission stopped....................................................................................................... .................................WP 0064 00
Master Warning Light
100.MASTER WARNING light fails to operate with engine off. .......................................... .................................WP 0065 00
101.MASTER WARNING light does not go out after starting engine. .................................. .................................WP 0065 00
102.MASTER WARNING light does not light with high transmission oil temp, but lights
with engine off. ............................................................................................................... .................................WP 0065 00
0021 00-5
