Page 224 - Workshop Manual - Aumark (BJ1051)

04-80
Diagnosis-illuminaiton

Malfunction sympotoms table

Use of the table below will help you find causes of problems. The SNs show possibilities sorting of
causes of problems. Check each part according to this order and replace as needed.
1. Refrigeration System Does Not Achieve Refrigeration

Symptom Suspected area Refer to
1. Fuse (damaged) -
2. Belt (too loose) -
3. Electromagnetic clutch (damaged) -
4. A/C cut-off relay (damaged) -
04 5. A/C switch (damaged) Chapter 73 Instrument Panel/Combination
Meter/Cigarette Lighter-Instrument Panel,
Replacement
6. Tri-state pressure switch (damaged) Chapter 51 Heater and Air
Air output is normal but Conditioner-Reservoir, Replacement
compressor does not run. 7. Sensing bulb (damaged) Chapter 51 Heater and Air
Conditioner-Evaporator, Replacement
8. A/C amplifier (damaged) -
9. Electromagnetic clutch relay (damaged) -
10. A/C relay (damaged) -
11. ECM (damaged) -
12. Harness (open or short to ground) -

13. Compressor (damaged) Chapter 51 Heater and Air Conditioner-A/C
Compressor, Replacement
1. Fuse (damaged) -
2. Harness (open or short to ground) -
3. Air output switch (damaged) Chapter 73 Instrument Panel/Combination
No air output from Meter/Cigarette Lighter-Instrument Panel,
blower Replacement
4. Governor resistor (damaged) Chapter 51 Heater and Air
Conditioner-Blower, Replacement
5. Blower (damaged) Chapter 51 Heater and Air
Conditioner-Blower, Replacement
1. Serious refrigerant leak Chapter 51 Heater and Air
Conditioner-Refrigerant, On-Vehicle
Inspection
With compressor 2. Compressor damaged Chapter 51 Heater and Air Conditioner-A/C
running, air output is
normal but insufficient Compressor, Replacement
cooling occurs.
3. Reservoir clogged Chapter 51 Heater and Air
Conditioner-Reservoir, Replacement

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