Mazda CX-7 2007 Workshop Manual page 1323

[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]
STEP
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
End Of Sie
SECURITY LIGHT 16, DTC U2510/P1260, U1147/P1260[IMMOBILIZER SYSTEM (ADVANCED KEYLESS
SYSTEM)]
DTC: U2510/P1260 Communication error between the keyless control module and the PCM (no response)
SECURITY
LIGHT: 16
DTC: U1147/P1260
DETECTION CONDITION
POSSIBLE CAUSE
Diagnostic Procedure
STEP
1 VERIFY DTC
• Are either U1900 or U0073, or both, displayed,
by either the keyless control module or the PCM,
or both?
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
End Of Sie
ON-BOARD DIAGNOSTIC
INSPECTION
Communication error between the keyless control module and the PCM (mismatched
conditions)
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)
• Malfunction in the wiring harness (CAN line) between the keyless control module and
the PCM
• PCM malfunction
• Keyless control module malfunction
INSPECTION
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.
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.
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.
ACTION
id0902e3801200
ACTION
09-02B–11
09-02B