Mazda CX-7 2007 Workshop Manual page 1320

[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]
STEP
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?
6 INSPECT KEYLESS CONTROL MODULE
• Using the registered key, turn the ignition switch
to the ON position.
— Is B1600/P1260 displayed again?
End Of Sie
SECURITY LIGHT 13, DTC B2431/P1260[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]
SECURITY LIGHT: 13
DTC: B2431/P1260
DETECTION CONDITION
POSSIBLE CAUSE
Diagnostic Procedure
STEP
1 VERIFY DTC
• Is B2431/P1260 displayed?
2 VERIFY DTC
• Is B1600/P1260 displayed?
09-02B–8
ON-BOARD DIAGNOSTIC
INSPECTION
Key ID number registration error
• Key ID number registration error
• 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
EXAMPLES:
INSPECTION
Yes Replace the coil antenna, then go to the next step.
(See 09-14-11 COIL ANTENNA REMOVAL/
INSTALLATION.)
• Dispose of the malfunctioning key.
No
• Register a new key if necessary.
(See 09-14-11 IMMOBILIZER SYSTEM
COMPONENT REPLACEMENT/KEY ADDITION
AND CLEARING[ADVANCED KEYLESS
SYSTEM].)
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.
METAL RING LYING ON KEY HEAD
METAL PART OF ANOTHER
KEY TOUCHING KEY HEAD
KEY IS NEAR OR TOUCHING
ANOTHER IMMOBILIZER SYSTEM KEY
Yes Go to Step 3.
No Go to the next step.
Yes Perform the DTC inspection for "SECURITY LIGHT: 13,
M-MDS: B1600/P1260".
(See 09-02B-7 SECURITY LIGHT 13, DTC B1600/
P1260[IMMOBILIZER SYSTEM (ADVANCED
KEYLESS SYSTEM)].)
No Go to the next step.
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