Mazda 3 manuals

Mazda 3 Service Manual: Information Display Input/Output Check Mode

Mazda 3 Service Manual / Body / Driver Info & Control / Information Display Input/Output Check Mode

NOTE:

Check Code Table


Check code

Check item

Related items

01

  • Information display

  • Multi information display

CAN system

  • DTC U2516: CAN system communication error

02

  • Audio unit

  • Climate control unit

  • Instrument cluster

CAN system

  • DTC U0184: Communication error to audio unit

  • DTC U0164: Communication error to climate control unit

  • DTC U0181: Communication error to instrument cluster

04

Light switch

  • TNS relay

  • Light switch

  • BCM

06

Ignition switch*1/Push button start*2

Ignition switch*1/Push button start*2

07

Dimmer cancel switch (Instrument cluster)

  • Instrument cluster

  • Related wiring harness

LCD

LCD


*1 Without advanced keyless entry and push button start system

*2 With advanced keyless entry and push button start system

NOTE:


Check Code Inspection

Check code 01


Check code 01

CAN system

DISPLAY

ACTION


CAN system of information display or multi information display is normal.


CAN system communication error. (DTC U2516).


Check code 02


Check code 02

  • Communication status to audio unit

  • Communication status to climate control unit

  • Communication status to instrument cluster

INSPECTION CONDITION

DISPLAY

ACTION

If there is a malfunction, the diagnostic results are displayed once each in the order of audio unit and climate control unit and instrument cluster.


All communications are normal.

Audio unit


Communication to audio unit is normal.


Communication error to audio unit.

(DTC U0184).


Vehicle without audio unit.

Climate control unit


Communication to climate control unit is normal.


Communication error to climate control unit. (DTC U0164).


Vehicle without climate control unit.

Instrument cluster


Communication to instrument cluster is normal.


Communication error to instrument cluster. (DTC U0181).


Check code 04


Check code 04

TNS ON/OFF signal

STEP

INSPECTION CONDITION

DISPLAY

ACTION

1

Turn the light switch to the ON position.


Go to the next step.


Verify that the voltage of information display or multi information display terminal 1B is B+

.

  • If the voltage is as specified, replace the information display or multi information display.

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

    • TNS relay

    • Light switch

    • BCM

    • Wiring harness (Light switch—BCM—TNS relay—information display or multi information display)

2

Turn the light switch off.


Verify that the voltage of the information display or multi information display terminal 1B is 1.0 V or less

.

  • If the voltage is as specified, replace the information display or multi information display.

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

    • TNS relay

    • Light switch

    • BCM

    • Wiring harness (Light switch—BCM—TNS relay—information display or multi information display)


Input signal to the information display or multi information display is normal.


Check code 06


Check code 06

Ignition switch ON/OFF signal

STEP

INSPECTION CONDITION

DISPLAY

ACTION

1

Switch the ignition to ON.


Go to the next step.


Verify that the voltage of information display or multi information display terminal 1E is B+

.

  • If the voltage is as specified, replace the information display or multi information display.

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

    • Ignition switch*1

    • Push button start*2

    • Relay block*2

    • Wiring harness*1 (Battery—ignition switch—information display or multi information display)

    • Wiring harness*2 (Battery—relay block—push button start—information display or multi information display)

2

Switch the ignition to ACC.


Verify that the voltage of the information display or multi information display terminal 1E is 1.0 V or less

.

  • If the voltage is as specified, replace the information display or multi information display.

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

    • Ignition switch*1

    • Push button start*2

    • Relay block*2

    • Wiring harness*1 (Battery—ignition switch—information display or multi information display)

    • Wiring harness*2 (Battery—relay block—push button start—information display or multi information display)


Input signal to the information display or multi information display is normal.


*1 Without advanced keyless entry and push button start system

*2 With advanced keyless entry and push button start system

Check code 07


Check code 07

Dimmer cancel ON/OFF signal

STEP

INSPECTION CONDITION

DISPLAY

ACTION

1

Panel light control switch turned to dimmer cancel ON


Go to the next step.


Verify that the voltage of information display or multi information display terminal 1B is B+

.

  • If the voltage is as specified, replace the information display or multi information display.

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

    • Instrument cluster

    • Wiring harness (information display or multi information display—instrument cluster)

2

Panel light control switch turned to dimmer cancel OFF


Verify that the voltage of the information display or multi information display terminal 1B is 1.0 V or less

.

  • If the voltage is as specified, replace the information display or multi information display.

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

    • Instrument cluster

    • Wiring harness (information display or multi information display—instrument cluster)


Input signal to the information display or multi information display is normal.


LCD

Information display

Check code —

LCD

DISPLAY

ACTION


All segments and dots illuminated.

LCD is normal.

Except above

Replace the information display.


Multi information display

Check code —

LCD

DISPLAY

ACTION


All segments and dots illuminated.

LCD is normal.

Except above

Replace the multi information display.


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