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Mazda CX-9 Grand Touring. Manual - part 148

1. Remove the ATF oil cooler pipe with the hoses still connected. Position the ATF oil cooler pipe so that it

is out of the way.

COOLING FAN COMPONENT REMOVAL NOTE

1. Remove the cooling fan component from above the engine compartment.

FAN MOTOR INSPECTION [MZI-3.7]

PART INSPECTION

1. Verify that the battery is fully charged. (See BATTERY INSPECTION [MZI-3.7] .)

2. Disconnect the cooling fan motor connector (fan control module side, 2 terminals).

3. Install a tester and battery to the cooling fan motor connector as shown in the figure.

4. Verify that each fan motors operate smoothly at the standard current.



If there is any malfunction, replace the applicable part.

Cooling fan motor standard current [Single Fan Control Module]

No.1, No.2: 11.2-15.2 A

Cooling fan motor standard current [Dual Fan Control Module]

No.1, No.2: 17-23 A

Fig. 24: Identifying Cooling Fan Motor Connector
Courtesy of MAZDA MOTORS CORP.

FAN CONTROL MODULE INSPECTION [MZI-3.7]

2008 Mazda CX-9 Grand Touring

2008 ENGINE Cooling System (MZI-3.7) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 9:57:25 AM

Page 23

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: Connecting M-MDS To DLC-2
Courtesy of MAZDA MOTORS CORP.

4. Measure the voltage at terminal A of the fan control module connector (2 terminals) as shown in the

table.



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
Courtesy of MAZDA MOTORS CORP.

Single fan control module

SINGLE FAN CONTROL MODULE RESULT REFERENCE

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

(1)

96-106°C {205-223°F}

Approx. 6.4 V

2008 Mazda CX-9 Grand Touring

2008 ENGINE Cooling System (MZI-3.7) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 9:57:25 AM

Page 24

Dual fan control module

DUAL FAN CONTROL MODULE RESULT REFERENCE

5. If all the above parts are normal, replace the fan control module.

Idling

(2)

96-106°C {205-223°F}

Approx. 7.7 V

Idling

OFF More than 106°C {223°F}

B+

(1)

Refrigerant pressure switch (middle) is off.

(2)

Refrigerant pressure switch (middle) is on.

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

(1)

96-106°C {205-223°F}

Approx. 6.6 V

Idling

(2)

96-106°C {205-223°F}

Approx. 7.5 V

Idling

OFF More than 106°C {223°F}

B+

(1)

Refrigerant pressure switch (middle) is off.

(2)

Refrigerant pressure switch (middle) is on.

2008 Mazda CX-9 Grand Touring

2008 ENGINE Cooling System (MZI-3.7) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 9:57:25 AM

Page 25

2008 ACCESSORIES & BODY, CAB

Cruise Control System (MZI-3.7) - Mazda CX-9

CRUISE CONTROL SWITCH INSPECTION [MZI-3.7]

1. Disconnect the negative battery cable.

2. Remove the driver-side air bag module. (See DRIVER-SIDE AIR BAG MODULE

REMOVAL/INSTALLATION .)

3. Disconnect the cruise control switch connector.

4. Inspect for resistance and continuity between the cruise control switch terminals using an ohmmeter.



If not as specified, replace the cruise control switch.

Fig. 1: Switch Position Chart
Courtesy of MAZDA MOTORS CORP.

2008 Mazda CX-9 Grand Touring

2008 ACCESSORIES & BODY, CAB Cruise Control System (MZI-3.7) - Mazda CX-9

2008 Mazda CX-9 Grand Touring

2008 ACCESSORIES & BODY, CAB Cruise Control System (MZI-3.7) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:48:51 AM

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Microsoft

Sunday, November 15, 2009 10:48:58 AM

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