Mazda CX 7. Manual — part 329

ON-BOARD DIAGNOSTIC

[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

09-02B–1

09-02B

09-02B ON-BOARD DIAGNOSTIC
[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

FOREWORD[IMMOBILIZER SYSTEM

(ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . 09-02B–2

DTC INSPECTION[IMMOBILIZER

SYSTEM (ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . 09-02B–2

Security Light . . . . . . . . . . . . . . . . . . . . 09-02B–2
M-MDS . . . . . . . . . . . . . . . . . . . . . . . . . 09-02B–3

DTC TABLE[IMMOBILIZER SYSTEM

(ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . 09-02B–3

PID/DATA MONITOR INSPECTION

[IMMOBILIZER SYSTEM (ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . 09-02B–4

PID/DATA MONITOR TABLE

[IMMOBILIZER SYSTEM (ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . 09-02B–4

SECURITY LIGHT 11,

DTC B1681/P1260
[IMMOBILIZER SYSTEM
(ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . 09-02B–5

Diagnostic Procedure. . . . . . . . . . . . . . 09-02B–5

SECURITY LIGHT 12,

DTC B2103/P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . 09-02B–6

Diagnostic Procedure. . . . . . . . . . . . . . 09-02B–6

SECURITY LIGHT 13,

DTC B1600/P1260
[IMMOBILIZER SYSTEM (ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . 09-02B–7

Diagnostic Procedure. . . . . . . . . . . . . . 09-02B–7

SECURITY LIGHT 13,

DTC B2431/P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . 09-02B–8

Diagnostic Procedure . . . . . . . . . . . . . . 09-02B–8

SECURITY LIGHT 14,

DTC B1602/P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . . 09-02B–9

Diagnostic Procedure . . . . . . . . . . . . . . 09-02B–10

SECURITY LIGHT 15,

DTC B1601/P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . . 09-02B–10

Diagnostic Procedure . . . . . . . . . . . . . . 09-02B–10

SECURITY LIGHT 16, DTC U2510/P1260,

U1147/P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . . 09-02B–11

Diagnostic Procedure . . . . . . . . . . . . . . 09-02B–11

SECURITY LIGHT 21,

DTC B1213/P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . . 09-02B–12

Diagnostic Procedure . . . . . . . . . . . . . . 09-02B–12

SECURITY LIGHT 22,

DTC B2141/P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . . 09-02B–13

Diagnostic Procedure . . . . . . . . . . . . . . 09-02B–13

SECURITY LIGHT 23,

DTC B2139/P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . 09-02B–14

Diagnostic Procedure . . . . . . . . . . . . . . 09-02B–14

DTC B1342[IMMOBILIZER SYSTEM

(ADVANCED
KEYLESS SYSTEM)] . . . . . . . . . . . . . . 09-02B–14

End of Toc

WM: IMMOBILIZER SYSTEM

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ON-BOARD DIAGNOSTIC

[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

09-02B–2

FOREWORD[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

id0902e3800100

• Malfunction diagnosis of the immobilizer system occurs automatically when the ignition switch is turned from

the LOCK (ACC) to the ON (START) position.

• Results of the malfunction diagnosis can be verified from the DTCs. There are two methods of DTC verification:

By the flashing pattern of the security light and by using the M-MDS.

• First, verify that the fuses are normal.

• The PID/data monitor function can be used to verify the number of key ID numbers registered for a single

vehicle.

Caution

• Always use the M-MDS or equivalent to verify DTCs even if the security light displays a DTC. If the

security light itself has a malfunction, it is possible that a DTC may not be properly displayed.
There are certain DTCs which can only be verified using the M-MDS, not the security light.

• DTCs for the immobilizer system that are stored in the keyless unit and PCM are cleared when the

ignition switch is turned from the ON to the LOCK (ACC) position.

• If DTCs are not displayed even though the engine does not start or stalls, perform the following

symptom troubleshooting:

— 01-03-17 NO.3 WILL NOT CRANK[L3 WITH TC]

• The following conditions may cause poor signal communication between the key and vehicle,

resulting in the engine not starting or a key registration error. Do not perform any work under the
following conditions:

— If 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

Note

• If two or more abnormalities are detected as

a result of malfunction diagnosis, only the
DTC with the lowest number of those
detected will be displayed by the security
light. However, multiple DTCs are stored at
the same time.

• If two or more immobilizer system DTCs are

verified, first repair the part indicated by the
security light displayed DTC. After
completely repairing one location, turn the
ignition switch from the LOCK to the ON
position and perform immobilizer system
malfunction diagnosis.

End Of Sie

DTC INSPECTION[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

id0902e3800200

Security Light

1. Turn the ignition switch to the ON position.
2. Verify the security light state.

• If there is any malfunction:

— After any malfunction is detected, the security light will function as follows for approx. 1 min.

• DTC 16 and lower: Flashes

• DTC 21 and higher: Illuminated

• If there is no malfunction:

— The security light illuminates for approx. 3 s and goes out.

METAL RING LYING ON KEY HEAD

METAL PART OF ANOTHER
KEY TOUCHING KEY HEAD

KEY IS NEAR OR TOUCHING
ANOTHER IMMOBILIZER SYSTEM KEY

EXAMPLES:

acxuuw00002417

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ON-BOARD DIAGNOSTIC

[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

09-02B–3

09-02B

3. When any malfunction has been detected, read DTCs via flashing patterns displayed after the security light

flashes or is illuminated for approx. 1 min.

• Perform troubleshooting according to the corresponding DTC inspection.

Note

• A verified DTC is flashed 10 times repeatedly by the security light.

• If multiple DTCs are verified, the security light displays only the smallest DTC.

M-MDS

1. Connect the M-MDS to the DLC-2.
2. Verify if any DTCs are displayed.

• If any DTCs are displayed, carry out

troubleshooting according to the
corresponding DTC inspection.

3. Disconnect the M-MDS.

End Of Sie

DTC TABLE[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

id0902e3800300

DLC-2

acxuuw00002418

DTC

Detection condition

Page

Security light flashing pattern

M-MDS display

*

Keyless

control

module

PCM

11

B1681

P1260

No detected communication
with the coil

09-02B-5 SECURITY
LIGHT 11, DTC B1681/
P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)]

12

B2103

P1260

Coil malfunction

09-02B-6 SECURITY
LIGHT 12, DTC B2103/
P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)]

13

B1600

P1260

The key ID number data
cannot be read

09-02B-7 SECURITY
LIGHT 13, DTC B1600/
P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)]

B2431

P1260

Key ID number registration
error

09-02B-8 SECURITY
LIGHT 13, DTC B2431/
P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)]

14

B1602

P1260

The keyless control module
cannot read key ID number
data normally

09-02B-9 SECURITY
LIGHT 14, DTC B1602/
P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)]

15

B1601

P1260

The keyless control module
has detected unregistered key
ID number.

09-02B-10 SECURITY
LIGHT 15, DTC B1601/
P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)]

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

ON-BOARD DIAGNOSTIC

[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

09-02B–4

*

: The letters at the beginning of each DTC are only displayed when using the M-MDS, and refer to the following:

B= Body system, P= Powertrain system, U= Network communication system.

End Of Sie

PID/DATA MONITOR INSPECTION[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

id0902e3800400

1. Connect the M-MDS to the DLC-2.
2. Display the PID/data monitor items.

• Verify a displayed item according to the PID/

data monitor table.

3. Disconnect the M-MDS.

End Of Sie

PID/DATA MONITOR TABLE[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

id0902e3800500

End Of Sie

16

U2510

P1260

Communication error between
the keyless control module
and the PCM (no response)

09-02B-11 SECURITY
LIGHT 16, DTC U2510/
P1260, U1147/
P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)]

U1147

P1260

Communication error between
the keyless control module
and the PCM (mismatched
conditions)

21

B1213

P1260

Only one key ID number is
registered.

09-02B-12 SECURITY
LIGHT 21, DTC B1213/
P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)]

22

B2141

P1260

Communication error between
the keyless control module
and the PCM (data transfer
error)

09-02B-13 SECURITY
LIGHT 22, DTC B2141/
P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)]

23

B2139

P1260

ID number data in the PCM
and the keyless control
module do not match.

09-02B-14 SECURITY
LIGHT 23, DTC B2139/
P1260[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)]

Not illuminated

B1342

-

Keyless control module
malfunction

09-02B-14 DTC
B1342[IMMOBILIZER
SYSTEM (ADVANCED
KEYLESS SYSTEM)]

DTC

Detection condition

Page

Security light flashing pattern

M-MDS display

*

Keyless

control

module

PCM

DLC-2

acxuuw00002441

PID name (definition)

Detection condition

NUMKEYS
(Number of key ID numbers registered in the instrument cluster)

Number of key ID numbers registered: 0— 8

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