TM 9-2320-363-20-1
Troubleshooting Symptom Index (Cont)
Troubleshooting
Malfunction
Procedure
Number
Malfunction
Page
ELECTRICAL SYSTEM (CONT)
AUXILIARY HEATER CIRCUITS
1. AUXILIARY HEATER DOES NOT OPERATE, AUXILIARY LIGHTS
OPERATING .......................................................................................................................
3-76
2. AUXILIARY HEATER INDICATOR LIGHT NOT OPERATING, HEATER
OPERATING NORMALLY ...................................................................................................
3-77
3. AUXILIARY HEATER HIGH/LOW SWITCH DOES NOT OPERATE ...............................................
3-78
4. AUXILIARY HEATER FUEL PUMP DOES NOT OPERATE, REMAINING
AUXILIARY HEATER CIRCUITS OPERATING .....................................................................
3-79
5. AUXILIARY HEATER WATER PUMP DOES NOT OPERATE, REMAINING
AUXILIARY CIRCUITS OPERATING ...................................................................................
3-79
6. CAB HEATER HIGH-SPEED FAN DOES NOT OPERATE, LOW-SPEED FAN
OPERATING NORMALLY ...................................................................................................
3-80
7. CAB HEATER LOW-SPEED FAN DOES NOT OPERATE, HIGH-SPEED FAN
OPERATING NORMALLY ...................................................................................................
3-80
TRANSMISSION
1. TRANSMISSION OIL TEMPERATURE GAGE CONTINUOUSLY READS
OVER 250F .......................................................................................................................
3-80
2. TRANSMISSION WILL NOT SHIFT INTO GEAR, OR ROUGH SHIFTING......................................
3-80
POWER TAKE-OFF (PTO) (ALL EXCEPT M915A2)
1. POWER TAKE-OFF (PTO) DOES NOT ENGAGE ........................................................................
3-81
2. POWER TAKE-OFF INDICATOR LIGHT DOES NOT OPERATE ..................................................
3-82
3. POWER TAKE-OFF (PTO) RPM CONTROL DOES NOT OPERATE ............................................
3-82
TRANSFER CASE (ALL EXCEPT M915A2)
1. TRANSFER CASE DOES NOT ENGAGE.....................................................................................
3-83
INTERMEDIATE AXLE AND REAR AXLE DRIVELINE ASSEMBLIES
1. NO DRIVE AT FORWARD REAR AXLE AND/OR REAR-REAR AXLE ...........................................
3-84
2. NO DRIVE AT FRONT AXLE (ALL EXCEPT M915A2) .................................................................
3-84
3. VIBRATION OR NOISE DURING ON-ROAD OPERATION............................................................
3-85
BRAKES
1. VEHICLE DOES NOT SLOW DOWN QUICKLY ENOUGH WHEN BRAKES
ARE APPLIED.....................................................................................................................
3-85
2. BRAKES DO NOT RELEASE OR RELEASE TOO SLOWLY ........................................................
3-85
3. BRAKES ARE UNEVEN, DRAG, OR PULL WHEN APPLIED ........................................................
3-86
4. ABS INDICATOR LIGHT STAYS ON AFTER VEHICLE REACHES 4-5 MPH..................................
3-86
Change 3 3-15
