Mazda CX 7. Manual — part 327
ON-BOARD DIAGNOSTIC [ADVANCED KEYLESS SYSTEM]
09-02A–5
09-02A
DTC B2477[ADVANCED KEYLESS SYSTEM]
id0902e1802300
Diagnostic procedure
End Of Sie
DTC B1317/B1318[ADVANCED KEYLESS SYSTEM]
id0902e1802400
Diagnostic procedure
End Of Sie
DTC B2477
Configuration error.
POSSIBLE
CAUSE
• Keyless control module configuration has not been performed correctly
POSSIBLE
CAUSE
• Keyless control module configuration error.
• Malfunction in the keyless control module internal circuit
STEP
INSPECTION
ACTION
1
PERFORM INSTRUMENT KEYLESS
CONTROL MODULE CONFIGURATION
• Perform keyless control module
configuration.
• Is the DTC displayed?
— M-MDS: B2477
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
Go to the next step.
2
VERIFY TROUBLESHOOTING OF DTC B2477
COMPLETED
• Clear the DTC from the memory.
• Is any DTC displayed?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.
DTC B1317
Keyless control module power supply voltage increases (16.1 V or more).
DTC B1318
Keyless control module power supply voltage decreases (less than 9 V).
POSSIBLE
CAUSE
• When the keyless control module power supply voltage is not within 9—16 V
POSSIBLE
CAUSE
• Open or short circuit in wiring harness between battery and keyless control module
• Battery malfunction
• Keyless control module malfunction
STEP
INSPECTION
ACTION
1
INSPECT FUSE
• Remove the ROOM fuse.
• Is the fuse normal?
Yes
Go to the next step.
No
Replace the fuse.
2
INSPECT BATTERY
• Measure the battery positive voltage.
• Is the voltage 9 V—16 V?
Yes
Go to the next step.
No
The battery has a malfunction.
Inspect the charge/discharge system/
3
INSPECT WIRING HARNESS BETWEEN
BATTERY AND KEYLESS CONTROL
MODULE
• Turn the ignition switch to the ON position.
• Measure the keyless control module terminal
2A voltage
• Is the voltage 9 V—16 V?
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.
1871-1U-06B(09-02A).fm 5 ページ 2006年3月15日 水曜日 午前11時38分
ON-BOARD DIAGNOSTIC [ADVANCED KEYLESS SYSTEM]
09-02A–6
DTC B2170[ADVANCED KEYLESS SYSTEM]
id0902e1802500
Diagnostic procedure
End Of Sie
DTC B1126[ADVANCED KEYLESS SYSTEM]
id0902e1802600
Diagnostic procedure
End Of Sie
DTC B2170
Push switch.
DETECTION
CONDITION
• Detect the push switch OFF signal when ignition switch is ON position.
POSSIBLE
CAUSE
• Steering lock unit malfunction
• Open or short circuit in wiring harness between keyless control module and steering lock unit
• Keyless control module malfunction
STEP
INSPECTION
ACTION
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?
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.
2
INSPECT KEYLESS CONTROL MODULE
• Turn the ignition switch to the ON position.
• Is the DTC displayed?
— M-MDS: B2170
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.
DTC B1126
Steering lock unit internal malfunction.
DETECTION
CONDITION
• Detect the steering lock unit maifunction signal
POSSIBLE
CAUSE
• Steering lock unit maifunction
STEP
INSPECTION
ACTION
1
INSPECT STEERING LOCK UNIT
• Turn the ignition switch to the ON position.
• Is the DTC displayed?
— M-MDS: B1126
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.
1871-1U-06B(09-02A).fm 6 ページ 2006年3月15日 水曜日 午前11時38分
ON-BOARD DIAGNOSTIC [ADVANCED KEYLESS SYSTEM]
09-02A–7
09-02A
DTC U0236[ADVANCED KEYLESS SYSTEM]
id0902e1802700
Diagnostic procedure
End Of Sie
DTC B1093[ADVANCED KEYLESS SYSTEM]
id0902e1802800
Diagnostic procedure
End Of Sie
DTC U0236
Steering lock unit communication system.
DETECTION
CONDITION
• Steering lock unit communication error.
POSSIBLE
CAUSE
• Steering lock unit maifunction
• Open or short circuit in wiring harness between keyless control module and steering lock unit
• Keyless control module malfunction
STEP
INSPECTION
ACTION
1
INSPECT COMMUNICATION CIRCUIT FOR
CONTINUITY
• Disconnect keyless control module
connector and steering lock unit connector.
• Is there continuity between keyless control
module terminal 3H and steering lock unit
terminal K?
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..
Go to next step
2
INSPECT KEYLESS CONTROL MODULE
• Turn the ignition switch to the ON position.
• Is the DTC displayed?
— M-MDS: U0236
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.
DTC B1093
Unprogrammed steering lock unit.
DETECTION
CONDITION
• Unprogrammed steering lock unit.
POSSIBLE
CAUSE
• Steering lock unit malfunction
• Open or short circuit in wiring harness between keyless control module and steering lock unit
• Keyless control module malfunction
STEP
INSPECTION
ACTION
1
INSPECT COMMUNICATION CIRCUIT FOR
CONTINUITY
• Disconnect keyless control module
connector and steering lock unit connector.
• Is there continuity between keyless control
module terminal 3H and steering lock unit
terminal E?
Yes
Perform the resetting procedure for the steering lock unit.
(See 09-14-35 STEERING LOCK UNIT ID CODE
REGISTRATION[ADVANCED KEYLESS SYSTEM].)
Go to the next step
No
Repair the wiring harness between the steering lock unit
and keyless control module.
Go to the next step
2
INSPECT STEERING LOCK UNIT
• Turn the ignition switch to the ON position.
• Is the DTC displayed?
— M-MDS: B1093
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.)
Go to the next step
No
DTC troubleshooting completed.
3
INSPECT KEYLESS CONTROL MODULE
• Turn the ignition switch to the ON position.
• Is the DTC displayed?
— M-MDS: B1093
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.
1871-1U-06B(09-02A).fm 7 ページ 2006年3月15日 水曜日 午前11時38分
ON-BOARD DIAGNOSTIC [ADVANCED KEYLESS SYSTEM]
09-02A–8
DTC U0214[ADVANCED KEYLESS SYSTEM]
id0902e1802900
Diagnostic procedure
End Of Sie
DTC B1133[ADVANCED KEYLESS SYSTEM]
id0902e1803000
Diagnostic procedure
DTC U0214
Keyless receiver.
DETECTION
CONDITION
• When the keyless receiver power supply voltage is less than 7.5 V.
POSSIBLE
CAUSE
• Keyless receiver malfunction
• Open or short circuit in wiring harness between keyless control module and keyless receiver
• Keyless control module malfunction
STEP
INSPECTION
ACTION
1
INSPECT WIRING HARNESS BETWEEN
KEYLESS RECEIVER AND GROUND
• Disconnect keyless receiver connector.
• Is there continuity between keyless receiver
terminal E and ground?
Yes
Go to next step.
No
Repair the wiring harness between the keyless receiver and
ground.
Go to next step.
2
INSPECT COMMUNICATION CIRCUIT FOR
CONTINUITY
• Disconnect keyless control module
connector and keyless receiver connector.
• Inspect the continuity between the following
connector terminals/
— keyless control module: 3A—keyless
receiver: A
— keyless control module: 3C—keyless
receiver: C
• Is voltage more than 7.5 V?
Yes
Go to next step.
No
Repair the wiring harness between the keyless receiver and
ground.
Go to next step.
3
INSPECT KEYLESS RECEIVER POWER
SUPPLY CIRCUIT
• Turn the ignition switch to the ON position.
• Measure voltage at terminal 3A of keyless
control module connector.
• Is voltage more than 7.5 V?
Yes
Replace keyless receiver.
(See 09-14-36 KEYLESS RECEIVER REMOVAL/
INSTALLATION.)
No
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].)
DTC B1133
Keyless antenna (exterior, LF)
DETECTION
CONDITION
• Keyless antenna dose not operated.
POSSIBLE
CAUSE
• Keyless antenna (exterior, LF) malfunction
• Open or short circuit in wiring harness between keyless control module and keyless antenna
• Keyless control module malfunction
STEP
INSPECTION
ACTION
1
INSPECT COMMUNICATION CIRCUIT FOR
CONTINUITY
• Disconnect keyless control module
connector and keyless antenna (exterior, LF)
connector.
• Inspect the continuity between the following
connector terminals.
— keyless control module: 1A—keyless
antenna: A
— keyless control module: 1B—keyless
antenna: B
• Is there continuity?
Yes
Replace keyless antenna (driver’s door).
(See 09-14-37 KEYLESS ANTENNA REMOVAL/
INSTALLATION[ADVANCED KEYLESS SYSTEM].)
Go to next step.
No
Repair the wiring harness between the keyless antenna
(exterior, LF) and keyless control module.
Go to next step.
2
INSPECT KEYLESS CONTROL MODULE
• Turn the ignition switch to the ON position.
• Is the DTC displayed?
— M-MDS: B1133
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.
1871-1U-06B(09-02A).fm 8 ページ 2006年3月15日 水曜日 午前11時38分
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