Mazda CX-9 Grand Touring. Manual — part 482

2. Remove the front bumper. (See FRONT BUMPER REMOVAL/INSTALLATION .)

3. Remove the front combination light. (See FRONT COMBINATION LIGHT

REMOVAL/INSTALLATION.)

4. Remove in the order indicated in the table.

Fig. 11: Identifying Discharge Headlight Control Module, Connector & Screws
Courtesy of MAZDA MOTORS CORP.

5. Install in the reverse order of removal.

DISCHARGE HEADLIGHT SYSTEM INSPECTION

DISCHARGE HEADLIGHT INOPERATIVE

WARNING:



Incorrect servicing of the discharge headlights could result in electric
shock. Before servicing the discharge headlights, always refer to the
DISCHARGE HEADLIGHT SERVICE WARNINGS. (See DISCHARGE
HEADLIGHT SERVICE WARNINGS.)

2008 Mazda CX-9 Grand Touring

2008 BODY & ACCESSORIES Lighting Systems - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:39:05 AM

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© 2005 Mitchell Repair Information Company, LLC.

Inspection procedure

INSPECTION PROCEDURE

Fig. 12: Identifying Relay & Main Fuse Block
Courtesy of MAZDA MOTORS CORP.

STEP

INSPECTION

ACTION

1

INSPECT POWER SUPPLY CIRCUIT OF
DISCHARGE HEADLIGHT CONTROL
MODULE



Disconnect the discharge headlight control
module connector.



Turn the headlight switch to the
HEADLIGHT (LO) position.



Measure the voltage at discharge headlight
control module terminal A (wiring harness-
side).



Is the voltage approx. 12 V?

Yes

Go to Step 6.

No

Go to the next step.

2

INSPECT FUSE



Turn the headlight switch to the OFF
position.



Remove the H/L LOW R 15 A fuse or H/L

Yes

Go to the next step.

2008 Mazda CX-9 Grand Touring

2008 BODY & ACCESSORIES Lighting Systems - Mazda CX-9

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Sunday, November 15, 2009 10:39:05 AM

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© 2005 Mitchell Repair Information Company, LLC.

LOW L 15 A fuse.



Inspect the fuses.



Are the fuses normal?

No

Replace the fuse.

3

INSPECT H/L LOW RELAY



Inspect the H/L LOW relay. (See RELAY
INSPECTION .)



Is the H/L LOW relay normal?

Yes

Go to the next step.

No

Replace the H/L LOW relay. (See RELAY

INSPECTION .)

4

INSPECT LIGHT SWITCH



Inspect the light switch. (See LIGHT
SWITCH INSPECTION.)



Is the light switch normal?

Yes

Go to the next step.

No

Replace the light switch. (See LIGHT

SWITCH

REMOVAL/INSTALLATION.)

5

INSPECT WIRING HARNESS BETWEEN
BATTERY AND DISCHARGE HEADLIGHT
CONTROL MODULE



Disconnect the negative battery cable.



Inspect for continuity between the
following terminals:



Battery (positive terminal) and H/L
LOW relay terminal E.



H/L LOW R 15 A fuse and discharge
headlight control module terminal A



H/L LOW L 15 A fuse and discharge
headlight control module terminal A



Are the wiring harnesses normal?

Yes

Go to the next step.

No

Replace the related wiring harness.

6

INSPECT WIRING HARNESS BETWEEN
DISCHARGE HEADLIGHT CONTROL
MODULE AND GROUND



Inspect the wiring harness between
discharge headlight control module terminal
B and ground for the following:



Short to power supply



Open circuit



Is the wiring harness normal?

Yes

Go to the next step.

No

Replace the related wiring harness.

VERIFY WHETHER MALFUNCTION IS IN
DISCHARGE HEADLIGHT BULB OR
DISCHARGE HEADLIGHT CONTROL
MODULE



Install the discharge headlight low bulb

Yes

System inspection completed.

2008 Mazda CX-9 Grand Touring

2008 BODY & ACCESSORIES Lighting Systems - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:39:06 AM

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© 2005 Mitchell Repair Information Company, LLC.

PARKING/FRONT SIDE MARKER LIGHT BULB REMOVAL/INSTALLATION

1. Disconnect the negative battery cable.

2. Remove the coolant reserve tank. (RH only) (See COOLANT RESERVE TANK

REMOVAL/INSTALLATION [MZI-3.7] .)

3. Remove in the order indicated in the table.

Fig. 13: Identifying Parking/Front Side Marker Light Bulb, Connector & Socket
Courtesy of MAZDA MOTORS CORP.

4. Install in the reverse order of removal.

FRONT TURN LIGHT BULB REMOVAL/INSTALLATION

1. Disconnect the negative battery cable.

2. Remove the coolant reserve tank. (RH only) (See COOLANT RESERVE TANK

REMOVAL/INSTALLATION [MZI-3.7] .)

3. Remove in the order indicated in the table.

7

(previously verified as illuminating
normally). (See HEADLIGHT BULB
REMOVAL/INSTALLATION.)



Connect the discharge headlight control
module connector.



Turn the headlight switch to the
HEADLIGHT (LO) position.



Does the headlight (low-beam) illuminate?

No

Replace the discharge headlight control

module. (See DISCHARGE

HEADLIGHT CONTROL MODULE

REMOVAL/INSTALLATION.)

2008 Mazda CX-9 Grand Touring

2008 BODY & ACCESSORIES Lighting Systems - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:39:06 AM

Page 12

© 2005 Mitchell Repair Information Company, LLC.