Mazda 6. Manual - part 354

ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM] 

T–164–1

T

T–164BODY ELECTRICAL SYSTEM

SECURITY LIGHT: DTC 15 (WDS OR EQUIVALENT: DTC B1601)

A6E817067000W08

Diagnostic procedure

End Of Sie

SECURITY LIGHT: DTC 21 (WDS OR EQUIVALENT: DTC B1213)

A6E817067000W09

Diagnostic procedure

ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM]

DTC 15 (B1601) PCM received incorrect ID number from key (transponder).

POSSIBLE 

CAUSE

• No keys have been registered after installation of new PCM

• Unregistered key detected

• Attempt made to register a ninth key

Note

• A maximum of only eight keys can be registered for a single vehicle.

• Defective PCM

STEP

INSPECTION

ACTION

1

VERIFY REGISTERED KEY IN PCM

• Check following PID/DATA monitor using 

SST (WDS or equivalent).
—  NUMKEYS

• Does NUMKEYS display more than 0?

Yes

Go to next step.

No

Go to Step 3.

2

VERIFY REGISTERED KEY IN PCM

• Check following PID/DATA monitor using 

SST (WDS or equivalent).
—  NUMKEYS

• Does NUMKEYS display more than 8?

Yes

• Erase key ID number using SST (WDS) and register key 

ID number.
(See 

T–90 IMMOBILIZER SYSTEM REPROGRAM 

PROCEDURE

)

• Go to next step.

No

Go to next step.

3

INSPECT PCM

• Erase key ID number using SST (WDS) and 

register key ID number.
(See 

T–90 IMMOBILIZER SYSTEM 

REPROGRAM PROCEDURE

)

• Using registered key, turn ignition switch to 

ON position.

• Does security light or SST (WDS or 

equivalent) indicate DTC 15 (B1601) again?

Yes

Replace PCM and reprogram immobilizer system.
(See 

T–90 IMMOBILIZER SYSTEM REPROGRAM 

PROCEDURE

)

No

Troubleshooting is completed.

DTC 21 (B1213) Number of valid keys is below minimum.

POSSIBLE 

CAUSE

• Less than two valid keys

STEP

INSPECTION

ACTION

1

VERIFY NUMBER OF VALID KEYS

• Check following PID/DATA monitor with SST 

(WDS or equivalent).
—  NUMKEYS

• Does NUMKEYS display more than 2?

Note

• Two or more valid keys are necessary to 

start engine.

Yes

Replace PCM and reprogram immobilizer system.
(See 

T–90 IMMOBILIZER SYSTEM REPROGRAM 

PROCEDURE

)

No

• Erase key ID numbers and register necessary key ID 

numbers.

• Go to next step.

2

VERIFY DTC

• Does security light or SST (WDS or 

equivalent) indicate DTC 21 (B1213) again?

Yes

Replace PCM and reprogram immobilizer system.
(See 

T–90 IMMOBILIZER SYSTEM REPROGRAM 

PROCEDURE

)

No

Troubleshooting is completed.

T–164–2

ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM] 

End Of Sie

SECURITY LIGHT: DTC - (WDS OR EQUIVALENT: DTC B1342)

A6E817067000W10

Diagnostic procedure

End Of Sie

DTC – (B1342)

PCM is defective

POSSIBLE 

CAUSE

• Defective PCM

STEP

INSPECTION

ACTION

–

INSPECT PCM

• Clear DTCs with WDS or equivalent.

• Does SST (WDS or equivalent) indicate DTC 

B1342 again?

Yes

Replace PCM and reprogram immobilizer system.
(See 

T–90 IMMOBILIZER SYSTEM REPROGRAM 

PROCEDURE

)

No

Connect connectors properly.

ON-BOARD DIAGNOSTIC [AUDIO] 

T–165

T

TBODY ELECTRICAL SYSTEM

STARTING PROCEDURE FOR ON-BOARD DIAGNOSTIC TEST MODE

A6E817566900W01

Note

• All DTCs displayed in the on-board diagnostic test mode should be entered in the Audio Repair Order 

Form.

1. Turn the ignition switch to the ACC or ON position.
2. First press the POWER button, then 

simultaneously press the AM button and TAPE/
MD button for 2 seconds or more. 

Note

• If several DTCs are in the memory, they can 

be displayed by the SEEK button.

3. To stop the on-board diagnostic test mode, turn the ignition switch to the LOCK position.

End Of Sie

SUPPLIER IDENTIFICATION PROCEDURE

A6E817566900W02

Note

• When asking the supplier (service center) for repair or replacement, verify which supplier the module 

belongs to and enter in the Audio Repair Order Form.

Identification With Printed Numbers/Label

1. Remove the audio unit.
2. Verify the supplier name written on the label attached on each module.

Identification With On-board Diagnostic Test Mode

1. Start the on-board diagnostic test mode.
2. Verify the part number and supplier code 

displayed in the LCD.

Note

• When no DTCs are in the memory, part 

numbers and supplier codes will not be 
displayed.

End Of Sie

ON-BOARD DIAGNOSTIC [AUDIO]

1

AM button

2

TAPE/MD button

3

SEEK button (type A)

4

SEEK button (type B)

5

POWER button (type A)

6

POWER button (type B)

A6E8175W010

Part number

Part name

00

Cassette deck (lower module)

03

CD player (upper module)

05

CD changer (external type)

06

CD changer (upper module)

07

MD player (lower module)

09

Base unit

Supplier code

Supplier name

1

FMS  Audio

2

Panasonic

3

Clarion

A6E8175W008

T–166

ON-BOARD DIAGNOSTIC [AUDIO] 

DTC CLEARING PROCEDURE

A6E817566900W03

1. Start the on-board diagnostic test mode.
2. First press the POWER button, then 

simultaneously press AUDIO CONT button for 2 
seconds or more.

Caution

• Before clearing the DTCs, be sure to 

enter all of them displayed in the on-
board diagnostic test mode in the Audio 
Repair Order Form.

3. To stop the on-board diagnostic test mode, turn the ignition switch to the LOCK position.

End Of Sie

DTC TABLE

A6E817566900W04

*1,*2

: When an error occurs, the error messages are displayed three times in the order of *1 and *2, respectively.

End Of Sie

DTC 09:ER22

A6E817566900W05

1

POWER button (type A)

AUDIO CONT button (type B)

2

AUDIO CONT button (type A)

POWER button (type B)

A6E8175W009

Screen display

Malfunction location

Page

DTC

Output signal

09:Er22

—

Base unit (peripheral circuit)

(See 

T–166 DTC 09:ER22

)

09:Er20

—

Power supply circuit of base unit

(See 

T–167 DTC 09:ER20

)

00:Er10

—

Cassette deck—base unit communication line

(See 

T–168 DTC 00:ER10

)

03:Er10

—

CD player—base unit communication line

(See 

T–168 DTC 03:ER10

)

05:Er10

—

CD changer (external type)—base unit 
communication line

(See 

T–169 DTC 05:ER10

)

06:Er10

—

CD changer (upper module)—base unit 
communication line

(See 

T–169 DTC 06:ER10

)

07:Er10

—

MD player—base unit communication line

(See 

T–170 DTC 07:ER10

)

03:Er01

—

CD player

(See 

T–170 DTC 03:ER01

)

03:Er02

CHECK

*1

 CD

*2

CD player

(See 

T–170 DTC 03:ER02

)

03:Er07

CHECK

*1

 CD

*2

CD player

(See 

T–171 DTC 03:ER07

)

00:Er01

—

Cassette deck

(See 

T–171 DTC 00:ER01

)

00:Er03

—

Cassette deck

(See 

T–172 DTC 00:ER03

)

00:Er04

CHECK

*1

 TAPE

*2

Cassette tape

(See 

T–172 DTC 00:ER04

)

05:Er01

—

CD changer (external type)

(See 

T–172 DTC 05:ER01

)

05:Er07

CHECK

*1

 CD

*2

CD changer (external type)

(See 

T–173 DTC 05:ER07

)

06:Er01

—

CD changer (upper module)

(See 

T–173 DTC 06:ER01

)

06:Er02

CHECK

*1

 CD

*2

CD changer (upper module)

(See 

T–174 DTC 06:ER02

)

06:Er07

CHECK

*1

 CD

*2

CD changer (upper module)

(See 

T–174 DTC 06:ER07

)

07:Er01

—

MD player

(See 

T–175 DTC 07:ER01

)

07:Er02

CHECK

*1

 MD

*2

MD player

(See 

T–175 DTC 07:ER02

)

07:Er07

CHECK

*1

 MD

*2

MD player

(See 

T–176 DTC 07:ER07

)

NO Err

—

No stored DTCs

—

DTC 09:Er22

Base unit (peripheral circuit)

DETECTION 

CONDITION

• Base unit detects malfunction in its inner circuit (related to tuner). 

POSSIBLE 

CAUSE

• Base unit malfunction