Problem Symptoms Table
WARNING: This page is about a different car, the 2002 Toyota MR2. However, it is still accessible from the selected car via links, so may be relevant.
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.
A/C System Symptoms
| Symptom/Suspect Area | See | |
|---|---|---|
| No Blower Operation | ||
| HTTR Fuse | ..... | |
| Heater Main Relay | HEATER MAIN RELAY | |
| Blower Motor | BLOWER MOTOR | |
| Blower Resistor | BLOWER RESISTOR | |
| Blower Speed Control Switch | Step 6 Under Inspection | |
| Wire Harness | ..... | |
| No Blower Control | ||
| Blower Motor | BLOWER MOTOR | |
| Blower Resistor | BLOWER RESISTOR | |
| Blower Speed Control Switch | Step 6 Under Inspection | |
| Wire Harness | ..... | |
| No Air Temperature | ||
| Engine Coolant Volume | ..... | |
| Heater Control Assembly | HEATER CONTROL ASSEMBLY | |
| No Compressor Operation | ||
| Refrigerant Volume | Step 2 Under On-Vehicle Inspection | |
| A/C Fuse | ..... | |
| Magnetic Clutch | Step 8 Under Compressor And Magnetic Clutch | |
| Compressor Lock Sensor | Step 4 Under Compressor And Magnetic Clutch | |
| Compressor | Step 1 Under Compressor And Magnetic Clutch | |
| Pressure Switch | PRESSURE SWITCH | |
| Heater Main Relay | HEATER MAIN RELAY | |
| Blower Speed Control Switch | Step 6 Under Inspection | |
| Heater Control Assembly | HEATER CONTROL ASSEMBLY | |
| Thermistor | THERMISTOR | |
| Wire Harness | ..... | |
| No Cool Air Comes Out | ||
| Refrigerant Volume | Step 2 Under On-Vehicle Inspection | |
| Refrigerant Pressure | Step 3 Under On-Vehicle Inspection | |
| Drive Belt | DRIVE BELT | |
| Magnetic Clutch | Step 8 Under Compressor And Magnetic Clutch | |
| Compressor Lock Sensor | Step 4 Under Compressor And Magnetic Clutch | |
| Pressure Switch | PRESSURE SWITCH | |
| Thermistor | THERMISTOR | |
| Heater Control Assembly | HEATER CONTROL ASSEMBLY | |
| Wire Harness | ..... | |
| Insufficient Cooling | ||
| Refrigerant Volume | Step 2 Under On-Vehicle Inspection | |
| Drive Belt | DRIVE BELT | |
| Magnetic Clutch | Step 8 Under Compressor And Magnetic Clutch | |
| Compressor | Step 1 Under Compressor And Magnetic Clutch | |
| Condenser | CONDENSER | |
| Expansion Valve | Step 3 Under Cooling Unit | |
| Evaporator | Step 1 Under Inspection | |
| Refrigerant Lines | REFRIGERANT LINE | |
| Pressure Switch | PRESSURE SWITCH | |
| Air Conditioning Control System | AIR CONDITIONING CONTROL SYSTEM | |
| Heater Control Assembly | HEATER CONTROL ASSEMBLY | |
| No Engine Idle-Up With A/C Switch ON | ||
| Heater Control Assembly | HEATER CONTROL ASSEMBLY | |
| ECM | ..... | |
| Idle Control System | ..... | |
| Wire Harness | ..... | |
| No Air Inlet Control | ||
| Heater Control Assembly | HEATER CONTROL ASSEMBLY | |
| Wire Harness | ..... | |
| No Mode Control | ||
| Heater Control Assembly | HEATER CONTROL ASSEMBLY | |
| Wire Harness | ..... | |
| Blinking Of A/C Indicator | ||
| Compressor | Step 1 Under On-Vehicle Inspection | |
| Drive Belt | DRIVE BELT | |
| Compressor Lock Sensor | 4 Under On-Vehicle Inspection | |
| Heater Control Assembly | HEATER CONTROL ASSEMBLY | |
| Brightness Does Not Change When Light Control Switch Is Turned On | ||
| Headlight And Taillight System | HEADLIGHT AND TAILLIGHT SYSTEM | |
| Heater Control Assembly | HEATER CONTROL ASSEMBLY | |