1. Connect the M-MDS to the DLC-2.
2. Start and warm up the engine.
3. Monitor the engine coolant temperature with the M-MDS.
Fig. 25: Identifying DLC-2 Connector
Courtesy of MAZDA MOTORS CORP.
4. Measure the voltage at terminal A of the fan control module connector (2 terminal) as shown in the table.
z
If not within the specification, inspect the input signals from the following parts.
Cylinder Head Temperature (CHT) sensor
Refrigerant pressure switch (middle)
Fig. 26: Identifying Fan Control Module Connector Terminals
Courtesy of MAZDA MOTORS CORP.
Single fan control module
SINGLE FAN CONTROL MODULE SPECIFICATION
Inspection
Result
Condition
A/C
Engine coolant temp.
IG SW ON or idling OFF Less than 96 °C {205 °F} 0 V (Fan stops.)
Idling
OFF 96-106 °C {205-223 °F}
4.11-10.29 V
Idling
ON
()
96-106 °C {205-223 °F}
Approx. 6.4 V
Idling
ON
()
96-106 °C {205-223 °F}
Approx. 7.7 V
2007 Mazda CX-9 Grand Touring
2007 ENGINE Cooling System (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:31:38 AM
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