Mazda CX-7 2007 Workshop Manual page 1306

ON-BOARD DIAGNOSTIC [ADVANCED KEYLESS SYSTEM]
DTC B2170[ADVANCED KEYLESS SYSTEM]
DTC B2170 Push switch.
DETECTION
• Detect the push switch OFF signal when ignition switch is ON position.
CONDITION
• Steering lock unit malfunction
POSSIBLE
• Open or short circuit in wiring harness between keyless control module and steering lock unit
CAUSE
• Keyless control module malfunction
Diagnostic procedure
STEP INSPECTION
1 INSPECT COMMUNICATION CIRCUIT FOR
CONTINUITY
• Disconnect keyless control module
connector and steering lock unit connector.
• Is there continuity between keyless control
module terminal 3E and steering lock unit
terminal E?
2 INSPECT KEYLESS CONTROL MODULE
• Turn the ignition switch to the ON position.
• Is the DTC displayed?
— M-MDS: B2170
End Of Sie
DTC B1126[ADVANCED KEYLESS SYSTEM]
DTC B1126 Steering lock unit internal malfunction.
DETECTION
• Detect the steering lock unit maifunction signal
CONDITION
POSSIBLE
• Steering lock unit maifunction
CAUSE
Diagnostic procedure
STEP INSPECTION
1 INSPECT STEERING LOCK UNIT
• Turn the ignition switch to the ON position.
• Is the DTC displayed?
— M-MDS: B1126
End Of Sie
09-02A–6
ACTION
Yes Replace the steering lock unit and perform the resetting
procedure for the steering lock unit.
(See 06-14-6 STEERING WHEEL AND COLUMN
REMOVAL/INSTALLATION.)
No
Repair the wiring harness between the steering lock unit
and keyless control module.
Yes Replace the keyless control module and perform the
resetting procedure for the advanced keyless system when
replacing the keyless control module.
(See 09-14-30 KEYLESS CONTROL MODULE REMOVAL/
INSTALLATION[ADVANCED KEYLESS SYSTEM].)
No DTC troubleshooting completed.
ACTION
Yes Replace the steering lock unit and perform the resetting
procedure for the advanced keyless system when replacing
the keyless control module.
(See 06-14-6 STEERING WHEEL AND COLUMN
REMOVAL/INSTALLATION.)
No DTC troubleshooting completed.
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