Mazda CX 7. Manual — part 437

INSTRUMENTATION/DRIVER INFO.

09-22–17

09-22

Check code 02

Check code 04

Check code 02

• Communication status to audio unit

• Communication status to climate control unit

• Communication status to instrument cluster

INSPECTION CONDITION

DISPLAY

ACTION

Select the check code 02.
(The diagnostic results will be
displayed once each in the order
of audio unit, heater control unit,
and instrument cluster.)

All communications are normal.

Audio unit

Communication to audio unit is normal.

Communication error to audio unit. (DTC U0184)
(See 09-02D-7 DTC TABLE[MULTIPLEX
COMMUNICATION SYSTEM])

Vehicle without audio unit.

Climate
control unit

Communication to climate control unit is normal.

Communication error to climate control unit. (DTC
U0166)
(See 09-02D-7 DTC TABLE[MULTIPLEX
COMMUNICATION SYSTEM])

Vehicle without climate control unit.

Instrument
cluster

Communication to instrument cluster is normal.

Communication error to instrument cluster. (DTC
U0181)
(See 09-02D-7 DTC TABLE[MULTIPLEX
COMMUNICATION SYSTEM])

Check code 04

TNS relay ON/OFF signal

STEP

INSPECTION

CONDITION

DISPLAY

ACTION

1

Turn the headlight switch
to the TNS position. (TNS
relay ON)

Go to the next step.

Verify that the voltage of information display terminal C is B+.

• If the voltage is as specified, replace the information

display.

• If the voltage is not as specified, inspect the following

parts:

— TNS relay

— Wiring harness (Battery— TNS relay— information

display)

2

Turn the headlight switch
off. (TNS relay OFF)

Verify that the voltage of the information display terminal C is
1.0 V or less.

• If the voltage is as specified, replace the information

display.

• If the voltage is not as specified, inspect the following

parts:
— TNS relay

— Wiring harness (TNS relay— information display)

Input signal to the information display is normal.

1871-1U-06B(09-22).fm 17 ページ ２００６年３月１５日 水曜日 午後１２時５６分

INSTRUMENTATION/DRIVER INFO.

09-22–18

LCD

End Of Sie

Check code —

LCD

DISPLAY

ACTION

All segments and dots illuminated.

LCD is normal.

Except above

Replace the information display.

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CONTROL SYSTEM

09-40–1

09-40

2007 Mazda CX-7 Workshop Manual (1871–1U–06B)

Revised 9/2006 (Ref. No. R128/06)

09-40

CONTROL SYSTEM

CONTROL SYSTEM

LOCATION INDEX. . . . . . . . . . . . . . . . . 09-40–1

BODY CONTROL MODULE (BCM)

REMOVAL/INSTALLATION. . . . . . . . . . 09-40–1

BODY CONTROL MODULE (BCM)

INSPECTION . . . . . . . . . . . . . . . . . . . . . 09-40–2

Terminal Voltage Table (Reference) . . . 09-40–2

STEERING ANGLE SENSOR

INSPECTION . . . . . . . . . . . . . . . . . . . . . 09-40–7

STEERING ANGLE SENSOR

INITIALIZATION PROCEDURE . . . . . . . 09-40–8

End of Toc

WM: POWER SUPPLY SYSTEM

CONTROL SYSTEM LOCATION INDEX

id094000801000

.

End Of Sie

BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION

id094000800400

1. Disconnect the negative battery cable.

2. Remove the front scuff plate inner (LH). (See 09-17-19 FRONT SCUFF PLATE REMOVAL/INSTALLATION)

3. Remove the front side trim (LH). (See 09-17-18 FRONT SIDE TRIM REMOVAL/INSTALLATION)

4. Remove in the order indicated in the table.

.

5. Install in the reverse order of removal.

End Of Sie

1

BCM
(See 09-40-1 BODY CONTROL MODULE (BCM)
REMOVAL/INSTALLATION.)
(See 09-40-2 BODY CONTROL MODULE (BCM)
INSPECTION.)

2

Steering angle sensor
(See 09-40-7 STEERING ANGLE SENSOR
INSPECTION)
(See 09-40-8 STEERING ANGLE SENSOR
INITIALIZATION PROCEDURE.)

1

2

acxuuw00002223

1

Wiring harness

2

Bolt

3

Connector

4

BCM

4

3

3

1

2

2

acxuuw00001914

CONTROL SYSTEM

09-40–2

2007 Mazda CX-7 Workshop Manual (1871–1U–06B)

BODY CONTROL MODULE (BCM) INSPECTION

id094000800300

1. Remove the glove compartment.
2. Remove the BCM with the connector connected.
3. Measure the voltage at each terminal and inspect for the continuity between the terminals and ground is as

indicated in the Terminal Voltage Tables (Reference).

• If the voltage or continuity is not as specified in the Terminal Voltage Table (Reference), inspect the parts

under “Inspection item (s)”.

— If the system does not work properly even though the parts or related wiring harnesses do not have any

malfunction, replace the BCM.

Terminal Voltage Table (Reference)

3G

3E

3K

3I

3C

3A

3H

3F

3L

3J

3D

3B

3S

3Q

3W

3U

3O 3M

3T

3R

3X

3V

3P

3N

6E

6C

6A

6F

6D

6B

5B

5E

5D

5A

5F

5C

5Q

5K

5H

5AC

5N

5Z

5T

5W

5G

5O

5AA

5U

5X

5Y

5V

5S

5P

5M

5AD

5AB

5I

5J

5L

5R

4G

4I

4A

4H

4F

4J

4D

4B

1M

1O

1I

1D

1G

1E

1K

1B

1L

1F

1H

1J

1P

1A

1C

1N

acxuuw00002260

Termin

al

Signal

Connected to

Measurement condition

Voltage (V)/

Continuity

Inspection item (s)

1A

Hood latch
switch signal

Hood latch
switch

Hood open
(Hood latch switch off)

5

• Hood latch switch

• Related wiring

harnesses

Hood closed
(Hood latch switch on)

1.0 or less

1B

CAN_H

—

Because this terminal is for
communication, good/no good
judgment by terminal voltage is not
possible.

—

• Related wiring

harnesses

1C

Parking brake
switch signal

Parking brake
switch

Ignition switch at
ON

Parking brake
switch on

1.0 or less

• Parking brake switch

• Related wiring

harnesses

Parking brake
switch off

B+

1D

CAN_L

—

Because this terminal is for
communication, good/no good
judgment by terminal voltage is not
possible.

—

• Related wiring

harnesses

1E

Brake fluid level
signal

Brake fluid level
sensor

Ignition switch at
ON

Brake fluid level
below MIN.

B+

• Brake fluid level sensor

• Related wiring

harnesses

Brake fluid level
above MIN.

1.0 or less

1F

— —

—

—

—

1G

Oil pressure
switch signal

Oil pressure
switch

Ignition switch at
ON

Oil pressure
switch on

1.0 or less

• Oil pressure switch

• Related wiring

harnesses

Oil pressure
switch off

B+

1H

Horn control

Horn relay

Transmitter LOCK button is pressed
twice within 5 s.

B+

→ 1.0 or

less

→ B+

• Horn relay

• Related wiring

harnesses

Other

B+

1I

Power supply

Main fuse block

Under any condition

B+

• Related wiring

harnesses

1J

— —

—

—

—