Symptom Troubleshooting Index
SYMPTOM TROUBLESHOOTING INDEX
| Symptom | Diagnostic procedure | Also check for |
|---|---|---|
| Recirculation control doors do not change between Fresh and Recirculate | Recirculation control motor circuit troubleshooting (see RECIRCULATION CONTROL MOTOR CIRCUIT TROUBLESHOOTING ) |
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| The blower motor does not run immediately even though the engine is fully warmed up |
NOTE:
The temperature control dial or button must be set between 64 °F (18°C) and 90°F (32°C) ECT Sensor circuit troubleshooting (see ECT SENSOR CIRCUIT TROUBLESHOOTING
)
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| The climate control panel display does not work | Climate control panel circuit troubleshooting (see CLIMATE CONTROL PANEL CIRCUIT TROUBLESHOOTING ) |
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| The manual switch does not work | Manual controls circuit troubleshooting (see MANUAL CONTROLS CIRCUIT TROUBLESHOOTING ) |
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| Blower, heater controls, and A/C do not work | Climate control power and ground circuit troubleshooting (see CLIMATE CONTROL POWER AND GROUND CIRCUIT TROUBLESHOOTING ) |
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| Both fans do not run at low speed with the A/C on | Radiator and A/C condenser fan low speed circuit troubleshooting (see RADIATOR AND A/C CONDENSER FAN LOW SPEED CIRCUIT TROUBLESHOOTING ) |
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| Both fans do not run at high speed with the A/C on when the engine coolant temperature is below 206 °F (97 °C) and the refrigerant pressure is above 1,520 kPa (15.5 kgf/cm2 , 220 psi) | Radiator and A/C condenser fan high speed circuit troubleshooting (see RADIATOR AND A/C CONDENSER FAN HIGH SPEED CIRCUIT TROUBLESHOOTING ) |
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| The A/C compressor clutch does not engage (but both fans run with the A/C on) | A/C compressor clutch circuit troubleshooting (see A/C COMPRESSOR CLUTCH CIRCUIT TROUBLESHOOTING ) |
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| A/C system does not come on (both fans and the A/C compressor do not work); heater is OK | A/C pressure switch circuit troubleshooting (see A/C PRESSURE SWITCH CIRCUIT TROUBLESHOOTING ) |
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