Nissan Qashqai (2007-2010). Manual — part 790
B1056 DRIVER AIRBAG MODULE
SRC-47
< COMPONENT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
B1056 DRIVER AIRBAG MODULE
Description
INFOID:0000000001069792
DTC B1056 [GND-SHORT] DRIVER AIRBAG MODULE
For driver “AIR BAG”, crash is judged by main “G” sensor output signal and sub “G” sensor in front direction.
OPERATION
In case of frontal collision whose acceleration exceeds the specified level, the ignition materials are ignited by
electric ignition system. The system burns and introduces the chemical reaction of gas generating materials to
generate hot gases that flow into the air bag through a filter and expand the bag.
STRUCTURE
Air bag module mainly consists of air bag and inflator which inflates air bag.
INSTALLATION
Driver air bag module is installed on the center of steering wheel with retaining clips.
DTC Logic
INFOID:0000000001069793
DTC DETECTION LOGIC
With CONSULT-III
DTC No. Index (“SELF-DIAG [CURRENT]”), (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)
Without CONSULT-III
Warning Lamp Flash Code Chart
DTC CONFIRMATION PROCEDURE (With CONSULT-III)
1.
IGNITION SWITCH
Turn ignition switch ON.
>> GO TO 2.
2.
CONSULT-III
Check the “SELF-DIAG” RESULT with CONSULT-III.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1056
DRIVER AIRBAG MOD-
ULE
[GND-SHORT]
Driver air bag module circuit is shorted
to ground
(including the spiral cable).
1.
Visually check the wiring harness-
connection.
2.
Replace the harness if it has visi-
ble damage.
3.
Replace driver air bag module.
4.
Replace spiral cable.
5.
Replace diagnosis sensor unit
(ACU).
JMHIA0033GB
SRC-48
< COMPONENT DIAGNOSIS >
B1056 DRIVER AIRBAG MODULE
>> GO TO 3.
3.
DTC CODE
If DTC is detected. Refer to
>> END
DTC CONFIRMATION PROCEDURE (Without CONSULT-III)
NOTE:
• SRS will not enter diagnosis mode if no malfunction is detected in user mode.
1.
IGNITION SWITCH
Turn ignition switch ON.
>> GO TO 2.
2.
USER MODE-DIAG MODE
After air bag warning lamp illuminates for 7 seconds, turn ignition switch OFF within 1 second.
>> GO TO 3.
3.
USER MODE-DIAG MODE
Wait more than 3 seconds.
>> GO TO 4.
4.
USER MODE-DIAG MODE
Repeat step 1 to 3 twice. (Perform three times in all.)
>> GO TO 5.
5.
DIAG MODE
Turn ignition switch ON. (SRS is now in diagnosis mode.)
>> GO TO 6.
6.
DIAG MODE (AIR BAG WARNING LAMP)
Malfunctioning portion is indicated according to blinking times of air bag warning lamp. Refer to
>> END
Diagnosis Procedure (Component diagnosis)
INFOID:0000000001069794
With CONSULT-III
CAUTION:
B1056 DRIVER AIRBAG MODULE
SRC-49
< COMPONENT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
• Before servicing, turn ignition switch OFF, disconnect both battery terminals and wait at least 3 min-
utes. (To discharge backup capacitor.)
• Do not use unspecified tester or other measuring device.
DIAGNOSTIC PROCEDURE
1.
CHECK HARNESS CONNECTOR
Are connections of harness connectors and terminals correct?
YES
>> GO TO 2.
NO
>> Repair or replace harness connector.
2.
CHECK WIRING HARNESS
Is the outside of wiring harness normal, without any damage?
YES
>> GO TO 3.
NO
>> Replace wiring harness.
3.
CHECK SPIRAL CABLE
Is continuity of spiral cable good?
YES
>> GO TO 4.
NO
>> Repair or replace spiral cable.
4.
CHECK DRIVER AIR BAG MODULE
Is “AIR BAG” displayed on CONSULT-lll?
YES
>> Replace driver air bag module
NO
>> Replace diagnosis sensor unit (ACU).
SRC-50
< COMPONENT DIAGNOSIS >
B1057 DRIVER AIRBAG MODULE
B1057 DRIVER AIRBAG MODULE
Description
INFOID:0000000001069795
DTC B1057 [SHORT] DRIVER AIRBAG MODULE
For driver “AIR BAG”, crash is judged by main “G” sensor output signal and sub “G” sensor in front direction.
OPERATION
In case of frontal collision whose acceleration exceeds the specified level, the ignition materials are ignited by
electric ignition system. The system burns and introduces the chemical reaction of gas generating materials to
generate hot gases that flow into the air bag through a filter and expand the bag.
STRUCTURE
Air bag module mainly consists of air bag and inflator which inflates air bag.
INSTALLATION
Driver air bag module is installed on the center of steering wheel with retaining clips.
DTC Logic
INFOID:0000000001069796
DTC DETECTION LOGIC
With CONSULT-III
DTC No. Index (“SELF-DIAG [CURRENT]”), (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)
Without CONSULT-III
Warning Lamp Flash Code Chart
DTC CONFIRMATION PROCEDURE (With CONSULT-III)
1.
IGNITION SWITCH
Turn ignition switch ON.
>> GO TO 2.
2.
CONSULT-III
Check the “SELF-DIAG” RESULT with CONSULT-III.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1057
DRIVER AIRBAG MOD-
ULE
[SHORT]
Driver air bag module circuit are shorted
to each othor
(including the spiral cable).
1.
Visually check the wiring harness-
connection.
2.
Replace the harness if it has visi-
ble damage.
3.
Replace driver air bag module.
4.
Replace spiral cable.
5.
Replace diagnosis sensor unit
(ACU).
JMHIA0033GB
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