No Cool Air: Outline
NO COOL AIR DESCRIPTION AND POSSIBLE CAUSE
| Troubleshooting item |
No cool air |
| Description |
- Cold air does not come out even if the temperature is set to MAX COLD.
- Magnetic clutch does not work.
|
| Possible cause |
NOTE:
- If the coolant temperature increases due to a cooling system malfunction, the fail-safe function disables the A/C operation.
- A/C request signal is not input to PCM.
- Communication error between dash-electrical supply unit and body control module (BCM)
- Communication error between body control module (BCM) and PCM
- Insufficient or overcharged refrigerant charge amount
- A/C compressor malfunction
- Refrigerant pressure sensor malfunction
- Evaporator temperature sensor malfunction
- Malfunction in wiring harness (including connector/terminal) between dash-electrical supply unit and evaporator temperature sensor
- Malfunction in wiring harness (including connector/terminal) between A/C relay and PCM
- Magnetic clutch malfunction (Operation malfunction, clearance adjustment malfunction)
- Malfunction in wiring harness (including connector/terminal) between battery and A/C relay
- Malfunction in wiring harness (including connector/terminal) between IG1 relay No. 2 and A/C relay
- Malfunction in wiring harness (including connector/terminal) between A/C relay and magnetic clutch
- A/C relay malfunction (stuck open)
|
 Courtesy of MAZDA MOTORS CORP.
|
| 1 |
Battery |
| 2 |
A/C relay |
| 3 |
Magnetic clutch |
| 4 |
IG1 relay No. 2 |
| 5 |
PCM |