Symptom Troubleshooting Index
TROUBLESHOOTING CHART
| Symptom | Diagnostic procedure | Also check for |
|---|---|---|
| All control motors do not run | Control motor power supply circuit troubleshooting (see CONTROL MOTOR POWER SUPPLY CIRCUIT TROUBLESHOOTING ) |
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| Aspirator fan does not run | Aspirator fan circuit troubleshooting (see ASPIRATOR FAN 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 with the A/C on (but the A/C compressor runs with the A/C on) | Radiator and A/C condenser fans common circuit troubleshooting (see RADIATOR FAN AND A/C CONDENSER FAN CIRCUIT TROUBLESHOOTING ) |
|
| The A/C condenser fan does not run at all (but the radiator fan and the A/C compressor run with the A/C on) | A/C condenser fan circuit troubleshooting (see A/C CONDENSER FAN CIRCUIT TROUBLESHOOTING (OPEN) ) |
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| Radiator fan does not run at all (but the A/C condenser fan and the A/C compressor run with the A/C on) | Radiator fan circuit troubleshooting (see RADIATOR FAN AND A/C CONDENSER FAN CIRCUIT TROUBLESHOOTING ) |
|
| 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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| HDS does not communicate with the climate control unit or the vehicle | Troubleshooting the DLC circuit (see DLC CIRCUIT TROUBLESHOOTING ) |