TB 9-2320-302-13&P-3
A/C TROUBLESHOOTING SYMPTOM INDEX
Troubleshooting Procedure Page
Malfunction/Symptom
GENERAL TROUBLESHOOTING
1.
A/C Unit Not Producing Cool Air.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0013 00-1
2.
Compressor Noise or Vibration.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0013 00-1
3.
Frozen Evaporator Assembly Coil - Reduced Air Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0013 00-1
A/C ELECTRICAL SYSTEM
1.
A/C System Does Not Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0013 00-2
2.
A/C System Energized But Evaporator Assembly Does Not Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0013 00-6
3.
Evaporator Assembly Works But Engine Fan Does Not. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0013 00-11
4.
Evaporator Assembly Works But Compressor Does Not. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0013 00-12
A/C SYSTEM PRESSURE DIAGNOSIS
1.
High Side and Low Side Pressure Normal and Evaporator Assembly Not Producing Cold Air. . . . . . . . . . . . . 0013 00-17
2.
High Side Pressure Normal to High - Low Side Pressure Normal to High. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0013 00-17
3.
High Side Pressure Low - Low Side Pressure Low. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0013 00-17
4.
High Side Pressure Low - Low Side Pressure Zero to Negative - Frost on Tubes From
Receiver/Dryer to Evaporator Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0013 00-17
5.
High Side Pressure Low - Low Pressure Side High. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0013 00-17
6.
High Side Pressure High - Low Pressure Side Low. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0013 00-17
7.
High Side Pressure High - Low Pressure Side High - Low Side Lines Hot to Touch. . . . . . . . . . . . . . . . . . . . . 0013 00-17
8.
High Side Pressure High - Low Pressure Side High.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0013 00-17
END OF WORK PACKAGE
0012 00-1/(0012 00-2 Blank)