Symptom Troubleshooting Index
WARNING: This page is about a different car, the 2008 Honda Pilot, 2007 Honda Pilot, and 2006 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.
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 ) |
|
| Blower, heater controls, and A/C do not work | Heater control power and ground circuit troubleshooting (see HEATER CONTROL POWER AND GROUND CIRCUIT TROUBLESHOOTING ) |
|
| The A/C compressor clutch does not engage (but both fans run at high speed with the A/C on) | A/C compressor clutch circuit troubleshooting (see A/C COMPRESSOR CLUTCH CIRCUIT TROUBLESHOOTING ) |
|
| 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 ) |
|
| Rear blower motor runs, but one or more speeds do not work | Rear blower motor circuit troubleshooting (see REAR BLOWER MOTOR CIRCUIT TROUBLESHOOTING ) |
|
| Rear blower motor does not run at all | Rear blower motor circuit troubleshooting (see REAR BLOWER MOTOR CIRCUIT TROUBLESHOOTING ) |
|
| Rear mode control doors do not change between ceiling vents (cool) and floor vents (hot) | Rear mode control motor circuit troubleshooting (see REAR MODE CONTROL MOTOR CIRCUIT TROUBLESHOOTING ) |
|
| Both fans do not run at low speed with the A/C on (but the A/C compressor runs 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 ) |
|
| The A/C condenser fan does not run at high speed (but both fans run at low speed and the A/C compressor operates with the A/C on) | A/C condenser fan high speed circuit troubleshooting (see A/C CONDENSER FAN HIGH SPEED CIRCUIT TROUBLESHOOTING ) |
|
| Both fans do not run at high speed with the A/C on (but both fans run at low speed and the A/C compressor operates with the A/C on) | Radiator and A/C condenser fan high speed circuit troubleshooting (see RADIATOR AND A/C CONDENSER FAN HIGH SPEED CIRCUIT TROUBLESHOOTING ) |
|
| Blower fan runs slower than expected in cold weather | ECT Troubleshooting: ECT sensor 1 circuit low voltage (see DTC P0117: ECT SENSOR 1 CIRCUIT LOW VOLTAGE
), ECT sensor 1 circuit high voltage (see DTC P0118: ECT SENSOR 1 CIRCUIT HIGH VOLTAGE
)
NOTE:
It is normal for the blower to run slowly until the engine coolant temperature begins to rise. If the blower continues to run slowly for an abnormal length of time, continue to troubleshoot the problem.
|
|
| Both fans run at high speed all the time with the A/C on | Radiator and A/C condenser fan high speed circuit troubleshooting (see RADIATOR AND A/C CONDENSER FAN HIGH SPEED CIRCUIT TROUBLESHOOTING ) |
|