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Mazda CX 7. Manual - part 434

INSTRUMENTATION/DRIVER INFO.

09-22–5

09-22

INSTRUMENT CLUSTER INPUT/OUTPUT CHECK MODE

id092200801700

Note

• In this mode, it is possible to verify the items in the following chart.

Check Code Table

Note

• Check codes which are not listed may be indicated, but they cannot be inspected.

• The check codes are displayed in numerical order. (While performing the inspection, if you want to inspect

a check code with a number smaller than the code number you are currently inspecting, terminate the
check mode then repeat the inspection from the beginning.)

• If a speed signal is input to the instrument cluster (the wheels are rotated), the input/output check mode

will be cancelled.

• The check codes can be fast-forwarded by pushing and holding the odometer/tripmeter switch for 1 s or

more.

Check code

Check item

Related items

TNS relay

• Lights-on reminder warning alarm

• Each illumination light

Speedometer

Tachometer

Buzzer

Fuel-level warning light

Fuel gauge sender unit

Fuel gauge

Water temperature gauge

• Odometer/tripmeter (LCD)

• Warning and indicator light

• Odometer/tripmeter (LCD)

• Warning and indicator light

Panel light control switch (dimmer switch)

Panel light control

Illumination light bulb

• CAN system

• Fuel gauge sender unit

• CAN system

• Fuel system

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INSTRUMENTATION/DRIVER INFO.

09-22–6

1. Press and hold the odometer/tripmeter switch, and turn the ignition switch to the ON position.
2. Continue holding the odometer/tripmeter switch for approx. 5 s. ( is displayed on LCD.)
3. Release the odometer/tripmeter switch within 3 s after is displayed.

Disconnect the connectors of the following parts and verify continuity
of the wiring harness.
Instrument cluster—fuel gauge sender unit
Is there continuity?

Disconnect the negative battery cable.

Connect the instrument
cluster connector.

Start

Repair the wiring harness.
If a malfunction occurs after repairing
the wiring harness, connect the instrument
cluster connector.

Connect the SST (Fuel and thermometer
checker) to the instrument cluster.

Connect the negative battery cable.

Turn the ignition switch to the LOCK position.

Does the odometer/tripmeter indicate first check code?

Push the odometer/tripmeter switch to select a check code.

Perform the "Check Code Inspection".
Is there any malfunction?

Are there any check codes to inspect?

Turn the ignition switch to the LOCK position.

Disconnect the negative battery cable.

Disconnect the SST (Fuel and thermometer checker) and connect the fuel gauge sender
unit connector, if necessary.

Connect the negative battery cable.

End

Except
check
code 22

Inspection
preparation

Inspection
procedure

Ending
procedure of
instrument
cluster
input/output
check mode

Check code 22

Yes

Repair or replace parts.

Perform the following procedure:

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INSTRUMENTATION/DRIVER INFO.

09-22–7

09-22

Checking Order

Note

• When inspecting more than two check codes, begin with the code with the highest ranking.

Check Code Inspection
Check code 08

Check code 12

Check code 13

Priority order of inspection

Check code

08, 12, 13, 14, 16, 23, 25, 26, 55, 57, 59

Check code 08

TNS relay ON/OFF signal

STEP

INSPECTION

CONDITION

DISPLAY

ACTION

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

Go to the next step.

Verify that the voltage of instrument cluster terminal 2I is B+.

• If the voltage is as specified, replace the instrument

cluster.

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

parts:

— TNS relay

— Wiring harness (Battery— TNS relay— instrument

cluster)

Turn the headlight switch
off. (TNS relay OFF)

Verify that the voltage of the instrument cluster terminal 2I is
1.0 V or less.

• If the voltage is as specified, replace the instrument

cluster.

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

parts:
— TNS relay

— Wiring harness (TNS relay— instrument cluster)

Input signal to the instrument cluster is normal.

Check code 12

Speedometer display signal

INSPECTION CONDITION

DISPLAY

ACTION

After selecting check code 12, wait for
approx. 2 s.

The speedometer needle
moves full scale then returns
to approx. 60 km/h.

The speedometer is normal.

Except above

Replace the instrument
cluster.

—

Check code 13

Tachometer operation signal

INSPECTION CONDITION

DISPLAY

ACTION

After selecting check code 13, wait for
approx. 2 s.

The tachometer needle
moves full scale then returns
to approx. 3,000 rpm.

The tachometer is normal.

Except above

Replace the instrument
cluster.

—

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INSTRUMENTATION/DRIVER INFO.

09-22–8

Check code 14

Check code 16

Check code 22

Check code 14

Buzzer operation signal

INSPECTION CONDITION

DISPLAY

ACTION

After selecting check code 14, wait
approx. 2 s.

The buzzer sounds.

The buzzer is normal.

The buzzer does not sound.

Replace the instrument
cluster.

Check code 16

Fuel-level warning light flashing signal

INSPECTION CONDITION

DISPLAY

ACTION

After selecting check code 16, wait
approx. 2 s.

Fuel-level warning light
flashes three times.

The fuel-level warning light is
normal.

Except above

Replace the instrument
cluster.

Check code 22

Fuel level signal

STEP

INSPECTION

CONDITION

DISPLAY

ACTION

Select check code 22 with
the fuel gauge sender unit
connector disconnected.

Go to the next step.

Except above

Go to the Step 6.

Connect terminals 2U and
2W of the instrument
cluster.

Go to the next step.

Except above

Go to the Step 6.

Using the SST (Fuel and
thermometer checker) or
resistor, input 20 ohms
between instrument cluster
terminals 2U and 2W.

Go to the next step.

Except above

Go to the Step 6.

Using the SST (Fuel and
thermometer checker) or
resistor, input 60 ohms
between instrument cluster
terminals 2U and 2W.

Go to the next step.

Except above

Go to the Step 6.

Using the SST (Fuel and
thermometer checker) or
resistor, input 100 ohms
between instrument cluster
terminals 2U and 2W.

Inspect the fuel gauge sender unit.

Except above

Go to the next step.

(FLASHING)

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