Mazda CX 7. Manual - part 331

 

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Mazda CX 7. Manual - part 331

 

 

ON-BOARD DIAGNOSTIC

[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

09-02B–9

09-02B

End Of Sie

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

id0902e3801000

3

INSPECT KEYLESS CONTROL MODULE

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

re-register it.
 (See 09-14-11 IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY ADDITION 
AND CLEARING[ADVANCED KEYLESS 
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 keyless control module and perform the 
resetting procedure for the immobilizer system when 
replacing the keyless control module.
 (See 09-14-30 KEYLESS CONTROL MODULE 
REMOVAL/INSTALLATION[ADVANCED KEYLESS 
SYSTEM].)
 (See 09-14-11 IMMOBILIZER SYSTEM COMPONENT 
REPLACEMENT/KEY ADDITION AND 
CLEARING[ADVANCED KEYLESS SYSTEM].)

No

DTC troubleshooting completed.

STEP

INSPECTION

ACTION

SECURITY LIGHT: 14

The keyless control module cannot read key ID number data normally.

 DTC: B1602/P1260

DETECTION CONDITION

• The keyless control module cannot read key ID number data normally.

POSSIBLE CAUSE

• Transponder (key) malfunction

• Coil antenna malfunction

• Keyless control module 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:

1871-1U-06B(09-02B).fm  9 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–10

Diagnostic Procedure

End Of Sie

SECURITY LIGHT 15, DTC B1601/P1260[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

id0902e3801100

Diagnostic Procedure

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 09-14-11 IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY ADDITION 
AND CLEARING[ADVANCED KEYLESS 
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 09-14-11 IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY ADDITION 
AND CLEARING[ADVANCED KEYLESS 
SYSTEM].)

2

INSPECT KEYLESS CONTROL MODULE

• 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 keyless control module and perform the 
resetting procedure for the immobilizer system when 
replacing the keyless control modulekeyless control 
module.
 (See 09-14-30 KEYLESS CONTROL MODULE 
REMOVAL/INSTALLATION[ADVANCED KEYLESS 
SYSTEM].)
 (See 09-14-11 IMMOBILIZER SYSTEM COMPONENT 
REPLACEMENT/KEY ADDITION AND 
CLEARING[ADVANCED KEYLESS SYSTEM].)

No

DTC troubleshooting completed.

SECURITY LIGHT: 15

The keyless control modulehas detected unregistered key ID number.

 DTC: B1601/P1260

DETECTION CONDITION

• The keyless control module has detected unregistered key ID number.

POSSIBLE CAUSE

• No keys have been registered after replacing the keyless control module.

• Unregistered key used

• Attempt made to register a ninth key

• Keyless control module malfunction

STEP

INSPECTION

ACTION

1

VERIFY NUMBER OF REGISTERED KEYS

• Using the M-MDS, perform the PID/data monitor 

inspection and confirm the number of registered 
keys.
 (See 09-02B-4 PID/DATA MONITOR 
TABLE[IMMOBILIZER SYSTEM (ADVANCED 
KEYLESS SYSTEM)].)

• Are one or more keys registered?

Yes

Go to the next step.

No

Go to Step 3.

2

VERIFY NUMBER OF REGISTERED KEYS

• Using the M-MDS, perform the PID/data monitor 

inspection and confirm the number of registered 
keys.
 (See 09-02B-4 PID/DATA MONITOR 
TABLE[IMMOBILIZER SYSTEM (ADVANCED 
KEYLESS SYSTEM)].)

• Are eight keys registered?

Yes

Using the M-MDS, clear the key ID numbers as 
necessary, then go to the next step.

No

Go to the next step.

1871-1U-06B(09-02B).fm  10 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–11

09-02B

End Of Sie

SECURITY LIGHT 16, DTC U2510/P1260, U1147/P1260[IMMOBILIZER SYSTEM (ADVANCED KEYLESS 
SYSTEM)]

id0902e3801200

Diagnostic Procedure

End Of Sie

3

INSPECT KEYLESS CONTROL MODULE

• Using the M-MDS, register the key ID number.

 (See 09-14-11 IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY ADDITION 
AND CLEARING[ADVANCED KEYLESS 
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.

• Is the DTC displayed again?

— Security light: 15

— M-MDS: B1601/P1260

Yes

Replace the keyless control module and perform the 
resetting procedure for the immobilizer system when 
replacing the keyless control module.
 (See 09-14-30 KEYLESS CONTROL MODULE 
REMOVAL/INSTALLATION[ADVANCED KEYLESS 
SYSTEM].)
 (See 09-14-11 IMMOBILIZER SYSTEM COMPONENT 
REPLACEMENT/KEY ADDITION AND 
CLEARING[ADVANCED KEYLESS SYSTEM].)

No

DTC troubleshooting completed.

STEP

INSPECTION

ACTION

SECURITY 
LIGHT: 16

 DTC: U2510/P1260 Communication error between the keyless control module and the PCM (no response)

 DTC: U1147/P1260

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

DETECTION CONDITION

Keyless control module DTC: U2510

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

Keyless control module DTC: U1147

• Communication error between the keyless control module and the PCM (mismatched 

conditions)

POSSIBLE CAUSE

• Malfunction in the wiring harness (CAN line) between the keyless control module and 

the PCM

• PCM malfunction

• Keyless control module malfunction

STEP

INSPECTION

ACTION

1

VERIFY DTC 

• Are either U1900 or U0073, or both, displayed, 

by either the keyless control module or the PCM, 
or both?

Yes

Perform troubleshooting according to the corresponding 
DTC inspection.
 (See 09-02D-14 DTC U0073[MULTIPLEX 
COMMUNICATION SYSTEM].)

No

Replace the keyless control module and perform the 
resetting procedure for the immobilizer system when 
replacing the keyless control module.
 (See 09-14-30 KEYLESS CONTROL MODULE 
REMOVAL/INSTALLATION[ADVANCED KEYLESS 
SYSTEM].)
 (See 09-14-11 IMMOBILIZER SYSTEM COMPONENT 
REPLACEMENT/KEY ADDITION AND 
CLEARING[ADVANCED KEYLESS SYSTEM].)
Go to the next step.

2

VERIFY DTC

• Using the registered key, turn the ignition switch 

to the ON position.

• Is the DTC displayed?

— Security light: 16

— M-MDS: U2510 or U1147/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 09-14-11 IMMOBILIZER SYSTEM COMPONENT 
REPLACEMENT/KEY ADDITION AND 
CLEARING[ADVANCED KEYLESS SYSTEM].)

No

DTC troubleshooting completed.

1871-1U-06B(09-02B).fm  11 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–12

SECURITY LIGHT 21, DTC B1213/P1260[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]

id0902e3801300

Diagnostic Procedure

End Of Sie

SECURITY LIGHT: 21

Only one key ID number is registered.

 DTC: B1213/P1260

DETECTION CONDITION

• Only one key is registered.

POSSIBLE CAUSE

• Only one registered key

STEP

INSPECTION

ACTION

1

VERIFY NUMBER OF REGISTERED KEYS

• Using the M-MDS, perform the PID/data monitor 

inspection and confirm the number of registered 
keys.
 (See 09-02B-4 PID/DATA MONITOR 
TABLE[IMMOBILIZER SYSTEM (ADVANCED 
KEYLESS SYSTEM)].)

• Are two or more keys registered?

Yes

Replace the keyless control module and perform the 
resetting procedure for the immobilizer system when 
replacing the keyless control module.
 (See 09-14-30 KEYLESS CONTROL MODULE 
REMOVAL/INSTALLATION[ADVANCED KEYLESS 
SYSTEM].)
 (See 09-14-11 IMMOBILIZER SYSTEM COMPONENT 
REPLACEMENT/KEY ADDITION AND 
CLEARING[ADVANCED KEYLESS SYSTEM].)

No

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

register a new key if necessary.
 (See 09-14-11 IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY ADDITION 
AND CLEARING[ADVANCED KEYLESS 
SYSTEM].)

• Go to the next step.

2

VERIFY DTC

• Using the registered key, turn the ignition switch 

to the ON position.

• Is the DTC displayed again?

— Security light: 21

— M-MDS: B1213/P1260

Yes

Replace the keyless control module and perform the 
resetting procedure for the immobilizer system when 
replacing the keyless control module.
 (See 09-14-30 KEYLESS CONTROL MODULE 
REMOVAL/INSTALLATION[ADVANCED KEYLESS 
SYSTEM].)
 (See 09-14-11 IMMOBILIZER SYSTEM COMPONENT 
REPLACEMENT/KEY ADDITION AND 
CLEARING[ADVANCED KEYLESS SYSTEM].)

No

DTC troubleshooting completed.

1871-1U-06B(09-02B).fm  12 ページ  2006年3月15日 水曜日 午前11時39分

 

 

 

 

 

 

 

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