ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET
HINT:
This is a method where a manifold gauge set is used to help locate the problem.
(a) Read the manifold gauge pressure when the following conditions are met:
Test conditions:
(1) Normally functioning refrigeration system Gauge Reading
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(2) Moisture is present in the refrigeration system.
Symptom |
Probable Cause |
Diagnosis |
Corrective Action |
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During operation, pressure on low pressure side cycles between normal and vacuum |
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(3) Insufficient cooling
Symptom |
Probable Cause |
Diagnosis |
Corrective Action |
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Gas leaks from the refrigeration system |
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(4) Poor circulation of refrigerant
Symptom |
Probable Cause |
Diagnosis |
Corrective Action |
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Refrigerant flow is obstructed by dirt inside the pipes of the condenser core |
Receiver is clogged |
Replace condenser |
(5) Refrigerant does not circulate.
Symptom |
Probable Cause |
Diagnosis |
Corrective Action |
---|---|---|---|
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Refrigerant does not circulate |
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(6) Refrigerant is overcharged or cooling effectiveness of condenser is insufficient.
Symptom |
Probable Cause |
Diagnosis |
Corrective Action |
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(7) Air is present in the refrigeration system.
Symptom |
Probable Cause |
Diagnosis |
Corrective Action |
---|---|---|---|
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Air in system |
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(8) Expansion valve malfunction
Symptom |
Probable Cause |
Diagnosis |
Corrective Action |
---|---|---|---|
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Expansion valve may be stuck |
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Check expansion valve |
(9) Insufficient compressor compression
Symptom |
Probable Cause |
Diagnosis |
Corrective Action |
---|---|---|---|
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Internal leak in compressor |
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Replace compressor |
Gauge readings (Reference)
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is stored during the DTC check, inspect the trouble areas listed
for that code. For details of the code, refer to "See page" below.
1. TRANSPONDER KEY ECU DIAGNOSTIC TROUBLE CODE CHART
Trans ...
Abbreviations Used In Manual
ABBREVIATIONS USED IN MANUAL
Abbreviation
Meaning
ABS
Anti-Lock Brake System
A/C
Air Conditioner
AC
Alternating Current
ACC
A ...
Trailer towing tips
Your vehicle will handle differently when towing a trailer. Help to avoid an
accident, death or serious injury, keep the following in mind when towing:
• Speed limits for towing a trailer vary by state or province. Do not exceed
the posted towing speed ...