Fan Control Module
- Remove the two bolts from the fan control module with the connectors still connected.
- Start and warm up the engine.
- Monitor the engine coolant temperature with the Worldwide Diagnostic System (WDS) scan tool (or equivalent).
- Measure the voltage at the terminal "B" of cooling fan motor connector from the harness side as shown. See Fig 1
. See FAN CONTROL MODULE SPECIFICATIONS
table.
- If not as specified, replace the fan control module.
Courtesy of MAZDA MOTORS CORP. FAN CONTROL MODULE SPECIFICATIONS
| Condition |
A/C Status |
Engine Coolant Temperature - °F (°C) |
Result |
| Ignition Switch ON (Idling) |
OFF |
Below 203 (95) |
Fan Stops |
| Ignition Switch ON (Idling) |
OFF |
Below 203 (95) |
Fan Stops |
| Ignition Switch ON (Idling) |
ON |
Below 203 (95) |
6.9-12.1 Volts |
| Ignition Switch ON (Idling) |
OFF |
Above 212 (100) |
0.6-14.6 Volts |