Hyundai Equus: Troubleshooting
| Troubleshooting |
| Problem Symptoms Table |
Before replacing or repairing air conditioning components,
first determine if the malfunction is due to the refrigerant charge, air
flow or compressor.
Use the table below to help you find the cause of the
problem. The numbers indicate the priority of the likely cause of the
problem. Check each part in order. If necessary, replace these parts.
After correcting the malfunction, check the complete system to ensure that performance is satisfactory.
Standard:
| Symptom | Suspected Area |
| No blower operation | 1. Blower fuse |
| 2. Blower relay | |
| 3. Blower motor | |
| 4. Power mosfet | |
| 5. Blower speed control switch | |
| 6. Wire harness | |
| No air temperature control | 1. Engine coolant capacity |
| 2. Heater control assembly | |
| No compressor operation | 1. Refrigerant capacity |
| 2. A/C fuse | |
| 3. Compressor | |
| 4. A/C pressure transducer | |
| 5. A/C switch | |
| 6. Evaporator temperature sensor | |
| 7. Wire harness | |
| Vented air not cold | 1. Refrigerant capacity |
| 2. Refrigerant pressure | |
| 3. Drive belt | |
| 4. Compressor | |
| 5. A/C pressure transducer | |
| 6. Evaporator temperature sensor | |
| 7. A/C switch | |
| 8. Heater control assembly | |
| 9. Wire harness | |
| Insufficient cooling | 1. Refrigerant capacity |
| 2. Drive belt | |
| 3. Compressor | |
| 4. Condenser | |
| 5. Expansion valve | |
| 6. Evaporator | |
| 7. Refrigerant lines | |
| 8. A/C pressure transducer | |
| 9. Heater control assembly | |
| No engine idle-up when A/C switch ON | 1. Engine ECM |
| 2. Wire harness | |
| No air inlet control | 1. Heater control assembly |
| No mode control | 1. Heater control assembly |
| 2. Mode actuator | |
| No cooling fan operation | 1. Cooling fan fuse |
| 2. Fan motor | |
| 3. Engine ECM | |
| 4. Wire harness |
Special Service Tools
Special Service Tools
Tool (Number and name)IllustrationUse09977-3R000Disc & hub assembly bolt removerRemoval and installation of disc & hub assembly bolt
...
See also:
Emergency starting
Connect cables in numerical order and disconnect in reverse order.
✽ NOTICE
Your vehicle has a battery in the trunk compartment, but when you jump start
your vehicle, use the jumper termi ...
Door Scuff Trim Repair procedures
Replacement
[Front Door Scuff Trim]
•
Put on gloves to protect your hands.
•
When prying with a flat-tip screwdriver, wrap it with
pro ...
Vehicle data collection and event data recorders
This vehicle is equipped with an event data recorder (EDR). The main purpose
of an EDR is to record, in certain crash or near crash-like situations, such as
an air bag deployment or hitting a road ...
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Hyundai Equus Manuals
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