Mazda CX 7. Manual — part 439

CONTROL SYSTEM

09-40–7

09-40

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WM: STEERING ANGLE SENSOR

STEERING ANGLE SENSOR INSPECTION

id094000801100

1. Remove the column cover. (See 09-17-8 COLUMN COVER REMOVAL/INSTALLATION.)
2. Turn the steering wheel to the right and left, and verify that the voltage and pulses at the terminals are as

shown in the figure.

• If not as specified, replace the steering angle sensor.

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5AD

Heated outer
mirror control

Heated outer
mirror
(passenger-side)

Rear window defloster relay on

B+

• Rear window defloster

relay

• Heated outer mirror

(passenger-side)

• Related wiring

harnesses

Rear window defloster relay off

1.0 or less

6A

Rear wiper
control

Rear wiper
motor

Rear wiper moving

1.0 or less

• Rear wiper motor

• Related wiring

harnesses

Rear wiper stopped

B+

6B

Interior light
control

• Map light

• Interior light

Within 5 min after any door is
opened.

1.0 or less

• Map light

• Interior light

• Related wiring

harnesses

5 min or more after any door is
opened.

B+

All doors closed

B+

6C

Driver-side door
unlock control

Driver-side door
lock actuator

Driver-side door lock actuator
unlocking

1.0 or less

→ B+ → 1.0

or less

• Driver-side door lock

actuator

• Related wiring

harnesses

Other

1.0 or less

6D

Interior light
power supply

• Map light

• Interior light

Under any condition

B+

• Map light

• Interior light

• Related wiring

harnesses

6E

Door lock control

Door lock
actuators

Door lock actuators locking

1.0 or less

→ B+ → 1.0

or less

• Door lock actuators

• Related wiring

harnesses

Other

1.0 or less

6F

Door unlock
control

Door lock
actuators

Door lock actuators unlocking

1.0 or less

→ B+ → 1.0

or less

• Door lock actuators

• Related wiring

harnesses

Other

1.0 or less

Termin

al

Signal

Connected to

Measurement condition

Voltage (V)/

Continuity

Inspection item (s)

A

E

C

D

F

B

0.5

—

1.5

3.0

—

5.0

2.5

—

3.5

4.00 V

—

4.75 V

4.00 V

—

4.75 V

0.25 V

—

0.75 V

0.25 V

—

0.75 V

4.00 V

—

4.75 V

4.00 V

—

4.75 V

0.25 V

—

0.75 V

0.25 V

—

0.75 V

TERMINAL A

TERMINAL D

TERMINAL E

TERMINAL C

°

°

°

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CONTROL SYSTEM

09-40–8

STEERING ANGLE SENSOR INITIALIZATION PROCEDURE

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Warning

• If the steering angle sensor reference point setting is not completed, it could result in an

unexpected accident due to the related systems being inoperative.. Therefore, if the BCM
connector or negative battery cable are disconnected, or the BCM power supply is interrupted,
always perform the steering angle sensor reference point setting and verify that each system is
operational.

Note

• The BCM stores the steering angle reference point using battery power supply. Therefore, if the following

operations are performed and the power supply to the BCM is interrupted, the stored steering angle
reference point will be erased.

— The negative battery cable is disconnected

— The steering angle sensor connector is disconnected

— A fuse (ROOM) is removed

— The wiring harness between the BCM and steering angle sensor connector is disconnected

1. Inspect the wheel alignment, inflation pressure, and the installation condition of the steering wheel.

• If there is any malfunction, adjust the applicable part.

2. Connect the negative battery cable.
3. Turn the ignition switch to the ON position.
4. Confirm that the DSC/TCS indicator light illuminates and that the TCS OFF light flashes.
5. Turn the steering wheel to full right lock, then turn it to full left lock.
6. Confirm that the TCS OFF light goes out.
7. Turn the ignition switch off.
8. Turn the ignition switch to the ON position again, and confirm that the DSC/TCS indicator light goes out.

• If the DSC/TCS indicator light does not go out, disconnect the negative battery cable, and perform the

procedure again starting from Step 2 shown above.

9. Drive the vehicle for approx. 10 min, and confirm that the ABS warning and DSC/TCS indicator lights do not

illuminate.

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TECHNICAL DATA

09-50–1

09-50

09-50

TECHNICAL DATA

BODY AND ACCESSORIES

TECHNICAL DATA . . . . . . . . . . . . . . . . 09-50–1

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WM: BODY AND ACCESSORIES

BODY AND ACCESSORIES TECHNICAL DATA

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Item

Specifications (W)

× number

Exterior light bulb capacity

Headlight bulb (high-beam)

60

× 2

Discharge headlight bulb (low-beam)

35

× 2

Halogen headlight bulb (low-beam)

55

× 2

Front turn/parking light bulb

21/5

× 2

Front side marker light bulb

5

× 2

Front fog light bulb

55

× 2

Brake light/taillight bulb

21/5

× 2

Rear turn light bulb

21

× 2

Back-up light bulb

21

× 2

Rear side marker light bulb

5

× 2

License plate light bulb

5

× 2

High-mount brake light bulb (LED)

2.4

Interior light bulb capacity

Map light bulb

5

× 2

Interior light bulb

10

× 1

Cargo compartment light bulb

8

× 1

Ignition key illumination bulb

1.4

× 1

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