Mazda 6. Manual - part 355

 

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Mazda 6. Manual - part 355

 

 

ON-BOARD DIAGNOSTIC [AUDIO] 

T–167

T

Diagnostic procedure

End Of Sie

DTC 09:ER20

A6E817566900W06

Diagnostic procedure

INSPECTION

ACTION

INSPECT BASE UNIT

• Clear DTC.

• Turn on radio and operate it for 3 seconds or more.

• Start on-board diagnostic test mode.

• Is DTC 09:Er22 displayed?

Yes

Replace base unit.

No

Troubleshooting completed.

DTC 09:Er20

Power supply circuit of base unit

DETECTION 

CONDITION

• Voltage detected at base unit terminals 1B and 1R is less than 8.5 V, or more than 16 V (must not be 

16V).

POSSIBLE 

CAUSE

• Weak battery

• Malfunction in wiring harness between battery and base unit

STEP

INSPECTION

ACTION

1

INSPECT FUSE

• Remove MIRROR 5 A fuse and ROOM 15 A 

fuse.

• Inspect MIRROR 5 A fuse and ROOM 15 A 

fuse.

• Are fuses okay?

Yes

Go to next step.

No

Replace fuse.

2

INSPECT BATTERY

• Measure battery voltage.

• Is voltage 8.5 V —16 V?

Yes

Go to next step.

No

Battery is weak.

• Inspect charge/discharge system.

3

INSPECT WIRING HARNESS BETWEEN 
BATTERY AND FUSE BLOCK

• Turn ignition switch to ACC position.

• Measure voltage at fuse block connector 

(JB-01) terminals B and fuse block connector 
(JB-02) terminals D.

• voltage 8.5 V —16 V?

Yes

Go to next step.

No

Repair wiring harness between battery and fuse block.

4

INSPECT WIRING HARNESS BETWEEN 
FUSE BLOCK AND BASE UNIT

• Install MIRROR 5 A fuse and ROOM 15 A 

fuse.

• Measure voltage at base unit connector 

terminals 1B and 1R.

• Is voltage 8.5 V —16 V?

Yes

Go to next step.

No

Repair wiring harness between fuse block and base unit.

5

INSPECT BASE UNIT

• Clear DTC.

• Turn ignition switch to ACC or ON position 

and hold for 30 seconds or more.

• Start on-board diagnostic test mode.

• Is DTC 09:Er20 displayed?

Yes

Replace base unit.

No

Troubleshooting completed.

T–168

ON-BOARD DIAGNOSTIC [AUDIO] 

End Of Sie

DTC 00:ER10

A6E817566900W07

Diagnostic procedure

End Of Sie

DTC 03:ER10

A6E817566900W08

Diagnostic procedure

End Of Sie

DTC 00:Er10

Cassette deck—base unit communication line

DETECTION 

CONDITION

• Base unit detects communication error with cassette deck.

POSSIBLE 

CAUSE

• Malfunction of connectors between base unit and cassette deck

• Cassette deck malfunction

• Base unit malfunction

STEP

INSPECTION

ACTION

1

INSPECT CONNECTOR

• Remove cassette deck and inspect 

connector for the following.
— Deformation of pin
— Poor connection of female terminal
— Pinching of foreign material

• Is connector okay?

Yes

Go to next step.

No

Repair connector, then go to next step.

2

VERIFY THAT CASSETTE DECK IS 
INSTALLED WITH BASE UNIT

• Install cassette deck and verify its installation 

condition.

• Is cassette deck securely installed?

Yes

Go to next step.

No

Securely install cassette deck, then go to next step.

3

INSPECT CASSETTE DECK

• Clear DTC.

• Turn ignition switch to ACC or ON position 

and hold for 3 seconds or more.

• Start on-board diagnostic test mode.

• Is DTC 00:Er10 displayed?

Yes

Replace base unit and cassette deck.

No

Troubleshooting completed.

DTC 03:Er10

CD player—base unit communication line

DETECTION 

CONDITION

• Base unit detects communication error with CD player.

POSSIBLE 

CAUSE

• Malfunction of connectors between base unit and CD player

• CD player malfunction

• Base unit malfunction

STEP

INSPECTION

ACTION

1

INSPECT CONNECTOR

• Remove CD player and inspect connector for 

the following.
— Deformation of pin
— Poor connection of female terminal
— Pinching of foreign material

• Is connector okay?

Yes

Go to next step.

No

Repair connector, then go to next step.

2

VERIFY THAT CD PLAYER IS INSTALLED 
WITH BASE UNIT

• Install CD player and verify its installation 

condition.

• Is CD player securely installed?

Yes

Go to next step.

No

Securely install CD player, then go to next step.

3

INSPECT CD PLAYER

• Clear DTC.

• Turn ignition switch to ACC or ON position 

and hold for 3 seconds or more.

• Start on-board diagnostic test mode.

• Is DTC 03:Er10 displayed?

Yes

Replace base unit and CD player.

No

Troubleshooting completed.

ON-BOARD DIAGNOSTIC [AUDIO] 

T–169

T

DTC 05:ER10

A6E817566900W09

Diagnostic procedure

End Of Sie

DTC 06:ER10

A6E817566900W10

Diagnostic procedure

End Of Sie

DTC 05:Er10

CD changer (external type)—base unit communication line

DETECTION 

CONDITION

• Base unit detects communication error with CD changer (external type).

POSSIBLE 

CAUSE

• Malfunction of connectors between base unit and CD changer (external type)

• CD changer (external type) malfunction

• Base unit malfunction

STEP

INSPECTION

ACTION

1

INSPECT CONNECTOR

• Inspect base unit and CD changer (external 

type) connectors for connection.

• Are connectors securely connected?

Yes

Go to next step.

No

Reconnect connector, then go to next step.

2

INSPECT WIRING HARNESS BETWEEN CD 
CHANGER (EXTERNAL TYPE) AND BASE 
UNIT

• Inspect wiring harness between base unit 

and CD changer (external type).

• Is wiring harness okay?

Yes

Go to next step.

No

Securely install CD changer (external type), then go to next 
step.

3

INSPECT CD CHANGER (EXTERNAL TYPE)

• Clear DTC.

• Turn ignition switch to ACC or ON position 

and hold for 3 seconds or more.

• Start on-board diagnostic test mode.

• Is DTC 05:Er10 displayed?

Yes

Replace base unit and CD changer (external type).

No

Troubleshooting completed.

DTC 06:Er10

CD changer (upper module)—base unit communication line

DETECTION 

CONDITION

• Base unit detects communication error with CD changer (upper module).

POSSIBLE 

CAUSE

• Malfunction of connectors between base unit and CD changer (upper module)

• CD changer (upper module) malfunction

• Base unit malfunction

STEP

INSPECTION

ACTION

1

INSPECT CONNECTOR

• Remove CD changer (upper module) and 

inspect connector for the following.
— Deformation of pin
— Poor connection of female terminal
— Pinching of foreign material

• Is connector okay?

Yes

Go to next step.

No

Repair connector, then go to next step.

2

VERIFY THAT CD CHANGER (UPPER 
MODULE) IS INSTALLED WITH BASE UNIT

• Install CD changer (upper module) and verify 

its installation condition.

• Is CD changer (upper module) securely 

installed?

Yes

Go to next step.

No

Securely install CD changer (upper module), then go to 
next step.

3

INSPECT CD CHANGER (UPPER MODULE)

• Clear DTC.

• Turn ignition switch to ACC or ON position 

and hold for 3 seconds or more.

• Start on-board diagnostic test mode.

• Is DTC 06:Er10 displayed?

Yes

Replace base unit and CD changer (upper module).

No

Troubleshooting completed.

T–170

ON-BOARD DIAGNOSTIC [AUDIO] 

DTC 07:ER10

A6E817566900W11

Diagnostic procedure

End Of Sie

DTC 03:ER01

A6E817566900W12

Diagnostic procedure

End Of Sie

DTC 03:ER02

A6E817566900W13

DTC 07:Er10

MD player—base unit communication line

DETECTION 

CONDITION

• Base unit detects communication error with MD player.

POSSIBLE 

CAUSE

• Malfunction of connectors between base unit and MD player

• MD player malfunction

• Base unit malfunction

STEP

INSPECTION

ACTION

1

INSPECT CONNECTOR

• Remove MD player and inspect connector 

for the following.
— Deformation of pin
— Poor connection of female terminal
— Pinching of foreign material

• Is connector okay?

Yes

Go to next step.

No

Repair connector, then go to next step.

2

VERIFY THAT MD PLAYER IS INSTALLED 
WITH BASE UNIT

• Install MD player and verify its installation 

condition.

• Is MD player securely installed?

Yes

Go to next step.

No

Securely install MD player, then go to next step.

3

INSPECT MD PLAYER

• Clear DTC.

• Turn ignition switch to ACC or ON position 

and hold for 3 seconds or more.

• Start on-board diagnostic test mode.

• Is DTC 07:Er10 displayed?

Yes

Replace base unit and MD player.

No

Troubleshooting completed.

DTC 03:Er01

CD player

DETECTION 

CONDITION

• CD player cannot implement insert and eject commands.

POSSIBLE 

CAUSE

• Defective CD (broken or foreign material stuck/attached)

• CD player malfunction

STEP

INSPECTION

ACTION

1

• Is CD able to be ejected?

Yes

Go to next step.

No

Replace CD player.

2

INSPECT CD

• Inspect condition of CD where error has 

occurred.

• Is CD okay?

Yes

Go to next step.

No

Repair (remove foreign material) or replace CD, then go to 
next step.

3

INSPECT CD PLAYER

• Clear DTC.

• Insert and eject CD with no defect.

• Start on-board diagnostic test mode.

• Is DTC 03:Er01 displayed?

Yes

Replace CD player.

No

Troubleshooting completed.

DTC 03:Er02

CD player

DETECTION 

CONDITION

Note

• When error occurs, error message “CHECK CD” is displayed in the LCD.

• Cannot play CD normally or change tracks.

POSSIBLE 

CAUSE

• Defective CD (scratches or dirt)

• CD player malfunction

 

 

 

 

 

 

 

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