Mazda CX 7. Manual — part 334

ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

09-02C–7

09-02C

SECURITY LIGHT 12, DTC B2103/P1260[IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5800700

Diagnostic Procedure

End Of Sie

SECURITY LIGHT 13, DTC B1600/P1260[IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5800800

SECURITY LIGHT: 12

• Coil antenna malfunction

• The PCM determined a malfunction in the coil antenna even though it is normal.

DTC: B2103/P1260

DETECTION CONDITION

• Coil antenna malfunction

• The PCM determined a malfunction in the coil antenna even though it is normal.

POSSIBLE CAUSE

• Coil antenna malfunction

• Poor connection of the coil antenna connector

• PCM malfunction

STEP

INSPECTION

ACTION

1

INSPECT CONNECTOR CONNECTION

• Are the coil antenna connector and the

instrument cluster connector securely
connected?

Yes

Replace the coil antenna, then go to the next step.
(See 09-14-11 COIL ANTENNA REMOVAL/
INSTALLATION.)

No

Connect the connector securely.

2

INSPECT PCM

• Turn the ignition switch to the ON position.

• Is the DTC displayed?

— Security light: 12

— M-MDS: B2103/P1260

Yes

Replace the PCM and perform the resetting procedure
for the immobilizer system when replacing the PCM.
(See 01-40-6 PCM REMOVAL/INSTALLATION[L3
WITH TC].)
(See 09-14-20 IMMOBILIZER SYSTEM COMPONENT
REPLACEMENT/KEY ADDITION AND
CLEARING[KEYLESS ENTRY SYSTEM].)

No

DTC troubleshooting completed.

SECURITY LIGHT: 13

The key ID number data cannot be read.

DTC: B1600/P1260

DETECTION CONDITION

• The key ID number data cannot be read.

POSSIBLE CAUSE

• No transponder in the key

• Transponder malfunction (Key ID number is not output)

• Coil antenna malfunction

• Instrument cluster malfunction

• Any of the following items are touching or near the key head.

— Spare keys

— Keys for other vehicles equipped with an immobilizer system

— Any metallic object

— Any electronic device, or any credit or other cards with magnetic strips

METAL RING LYING ON KEY HEAD

METAL PART OF ANOTHER
KEY TOUCHING KEY HEAD

KEY IS NEAR OR TOUCHING
ANOTHER IMMOBILIZER SYSTEM KEY

EXAMPLES:

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ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

09-02C–8

Diagnostic Procedure

End Of Sie

STEP

INSPECTION

ACTION

1

VERIFY DTC

• Is B1600/P1260 displayed?

Yes

Go to Step 3.

No

Go to the next step.

2

VERIFY DTC

• Is B2431/P1260 displayed?

Yes

Perform the DTC inspection for “SECURITY LIGHT: 13,
M-MDS: B2431/P1260”.
(See 09-02C-9 SECURITY LIGHT 13, DTC B2431/
P1260[IMMOBILIZER SYSTEM (KEYLESS ENTRY
SYSTEM)].)

No

Go to the next step.

3

VERIFY WHETHER KEY IS VALID OR NOT

• Are there any keys with which the engine can be

started, other than the key that is a cause of the
displayed DTC?

Yes

Go to Step 5.

No

Go to the next step.

4

VERIFY WHETHER MALFUNCTION IS IN

KEY OR COIL ANTENNA

• Using the M-MDS, register an additional key.

(See 09-14-20 IMMOBILIZER SYSTEM
COMPONENT REPLACEMENT/KEY ADDITION
AND CLEARING[KEYLESS ENTRY SYSTEM].)

• Using the registered key, turn the ignition switch

to the ON position.

• Verify the DTC using the M-MDS.

— Is B1600/P1260 displayed again?

Yes

Replace the coil antenna, then go to Step 6.
(See 09-14-11 COIL ANTENNA REMOVAL/
INSTALLATION.)

No

• Dispose of the malfunctioning key.

• Register a new key if necessary.

(See 09-14-20 IMMOBILIZER SYSTEM
COMPONENT REPLACEMENT/KEY ADDITION
AND CLEARING[KEYLESS ENTRY SYSTEM].)

5

VERIFY WHETHER MALFUNCTION IS IN

KEY OR COIL ANTENNA

• Using another valid key, turn the ignition switch

to the ON position.

• Verify the DTC Using the M-MDS.

— Is B1600/P1260 displayed again?

Yes

Replace the coil antenna, then go to the next step.
(See 09-14-11 COIL ANTENNA REMOVAL/
INSTALLATION.)

No

• Dispose of the malfunctioning key.

• Register a new key if necessary.

(See 09-14-20 IMMOBILIZER SYSTEM
COMPONENT REPLACEMENT/KEY ADDITION
AND CLEARING[KEYLESS ENTRY SYSTEM].)

6

INSPECT INSTRUMENT CLUSTER

• Using the registered key, turn the ignition switch

to the ON position.
— Is B1600/P1260 displayed again?

Yes

Replace the instrument cluster and perform the
resetting procedure for the immobilizer system when
replacing the instrument cluster.
(See 09-22-2 INSTRUMENT CLUSTER REMOVAL/
INSTALLATION.)
(See 09-14-20 IMMOBILIZER SYSTEM COMPONENT
REPLACEMENT/KEY ADDITION AND
CLEARING[KEYLESS ENTRY SYSTEM].)

No

DTC troubleshooting completed.

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ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

09-02C–9

09-02C

SECURITY LIGHT 13, DTC B2431/P1260[IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5800900

Diagnostic Procedure

End Of Sie

SECURITY LIGHT: 13

Key ID number registration error

DTC: B2431/P1260

DETECTION CONDITION

• Key ID number registration error

POSSIBLE CAUSE

• Errors during key ID number registration procedure

• Any of the following items are touching or near the key head.

— Spare keys

— Keys for other vehicles equipped with an immobilizer system

— Any metallic object

— Any electronic device, or any credit or other cards with magnetic strips

STEP

INSPECTION

ACTION

1

VERIFY DTC

• Is B2431/P1260 displayed?

Yes

Go to Step 3.

No

Go to the next step.

2

VERIFY DTC

• Is B1600/P1260 displayed?

Yes

Perform the DTC inspection for “SECURITY LIGHT: 13,
M-MDS: B1600/P1260”.
(See 09-02C-7 SECURITY LIGHT 13, DTC B1600/
P1260[IMMOBILIZER SYSTEM (KEYLESS ENTRY
SYSTEM)].)

No

Go to the next step.

3

INSPECT INSTRUMENT CLUSTER

• Using the M-MDS, clear the key ID number and

re-register it.
(See 09-14-20 IMMOBILIZER SYSTEM
COMPONENT REPLACEMENT/KEY ADDITION
AND CLEARING[KEYLESS ENTRY SYSTEM].)

Note

• Two or more keys must be registered to

start the engine.

• Using the registered key, turn the ignition switch

to the ON position.

• Verify the DTC Using the M-MDS.

— Is B2431/P1260 displayed again?

Yes

Replace the instrument cluster and perform the
resetting procedure for the immobilizer system when
replacing the instrument cluster.
(See 09-22-2 INSTRUMENT CLUSTER REMOVAL/
INSTALLATION.)
(See 09-14-20 IMMOBILIZER SYSTEM COMPONENT
REPLACEMENT/KEY ADDITION AND
CLEARING[KEYLESS ENTRY SYSTEM].)

No

DTC troubleshooting completed.

METAL RING LYING ON KEY HEAD

METAL PART OF ANOTHER
KEY TOUCHING KEY HEAD

KEY IS NEAR OR TOUCHING
ANOTHER IMMOBILIZER SYSTEM KEY

EXAMPLES:

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ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

09-02C–10

SECURITY LIGHT 14, DTC B1602/P1260[IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5801000

Diagnostic Procedure

End Of Sie

SECURITY LIGHT: 14

The instrument cluster cannot read key ID number data normally.

DTC: B1602/P1260

DETECTION CONDITION

• The instrument cluster cannot read key ID number data normally.

POSSIBLE CAUSE

• Transponder (key) malfunction

• Coil antenna malfunction

• Instrument cluster malfunction

• Any of the following items are touching or near the key head.

— Spare keys

— Keys for other vehicles equipped with an immobilizer system

— Any metallic object

— Any electronic device, or any credit or other cards with magnetic strips

STEP

INSPECTION

ACTION

1

VERIFY WHETHER KEY IS VALID OR NOT

• Using another registered key, turn the ignition

switch to the ON position.

• If there is not another registered key, register an

additional key using the M-MDS and turn the
ignition key to the ON position using the
registered key.
(See 09-14-20 IMMOBILIZER SYSTEM
COMPONENT REPLACEMENT/KEY ADDITION
AND CLEARING[KEYLESS ENTRY SYSTEM].)

• Is the DTC displayed again?

— Security light: 14

— M-MDS: B1602/P1260

Yes

Replace the coil antenna, then go to the next step.
(See 09-14-11 COIL ANTENNA REMOVAL/
INSTALLATION.)

No

• Dispose of the malfunctioning key.

• Register a new key if necessary.

(See 09-14-20 IMMOBILIZER SYSTEM
COMPONENT REPLACEMENT/KEY ADDITION
AND CLEARING[KEYLESS ENTRY SYSTEM].)

2

INSPECT INSTRUMENT CLUSTER

• Using another registered key, turn the ignition

switch to the ON position.

• Is the DTC displayed again?

— Security light: 14

— M-MDS: B1602/P1260

Yes

Replace the instrument cluster and perform the
resetting procedure for the immobilizer system when
replacing the instrument cluster.
(See 09-22-2 INSTRUMENT CLUSTER REMOVAL/
INSTALLATION.)
(See 09-14-20 IMMOBILIZER SYSTEM COMPONENT
REPLACEMENT/KEY ADDITION AND
CLEARING[KEYLESS ENTRY SYSTEM].)

No

DTC troubleshooting completed.

METAL RING LYING ON KEY HEAD

METAL PART OF ANOTHER
KEY TOUCHING KEY HEAD

KEY IS NEAR OR TOUCHING
ANOTHER IMMOBILIZER SYSTEM KEY

EXAMPLES:

1871-1U-06B(09-02C).fm 10 ページ ２００６年３月１５日 水曜日 午前１１時３９分