Infiniti FX35, FX50 (S51). Manual — part 1724
B1066, B1071 ASSIST A/B MODULE
SRC-61
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
B1066, B1071 ASSIST A/B MODULE
Description
INFOID:0000000005241118
For front passenger air bag module, crash is judged by main “G” sensor output signal and safing algorithm 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 the gas generating materials resulting in a chemical reaction. This
generates hot gases that flow into the air bag through a filter and expand the bag.
STRUCTURE
Front passenger air bag module mainly consists of air bag and inflator that inflates air bag.
INSTALLATION
Front passenger air bag module is installed on the instrument panel with fixed bolts.
DTC Logic
INFOID:0000000005241119
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAG RESULT
With CONSULT-III
1.
Turn ignition switch ON.
2.
Perform “AIR BAG” Self Diagnostic Result.
Without CONSULT-III
1.
Turn ignition switch ON.
2.
Check the air bag warning lamp status. Refer to
SRC-16, "Air Bag Warning Lamp Diagnosis"
.
NOTE:
SRS does not enter diagnosis mode if no malfunction is detected in user mode.
Is malfunctioning part detected?
YES
>> Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005241120
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3
minutes. (To discharge backup capacitor.)
• Never use unspecified tester or other measuring device.
1.
CHECK HARNESS CONNECTOR
Check the harness connector.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace harness connector.
2.
CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES
>> GO TO 3.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1066
B1071
ASSIST A/B MODULE
[VB-SHORT]
Front passenger air bag module circuit
is shorted to some power supply circuit
• Disconnection of wiring harness and
short
• Malfunction in front passenger air
bag module
• Malfunction in air bag diagnosis sen-
sor unit
SRC-62
< DTC/CIRCUIT DIAGNOSIS >
B1066, B1071 ASSIST A/B MODULE
NO
>> Replace wiring harness.
3.
REPLACE FRONT PASSENGER AIR BAG MODULE
1.
Replace front passenger air bag module. Refer to
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 4.
NO
>> INSPECTION END
4.
REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
1.
Replace air bag diagnosis sensor unit. Refer to
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 1.
NO
>> INSPECTION END
B1067, B1072 ASSIST A/B MODULE
SRC-63
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
B1067, B1072 ASSIST A/B MODULE
Description
INFOID:0000000005241121
For front passenger air bag module, crash is judged by main “G” sensor output signal and safing algorithm 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 the gas generating materials resulting in a chemical reaction. This
generates hot gases that flow into the air bag through a filter and expand the bag.
STRUCTURE
Front passenger air bag module mainly consists of air bag and inflator that inflates air bag.
INSTALLATION
Front passenger air bag module is installed on the instrument panel with fixed bolts.
DTC Logic
INFOID:0000000005241122
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAG RESULT
With CONSULT-III
1.
Turn ignition switch ON.
2.
Perform “AIR BAG” Self Diagnostic Result.
Without CONSULT-III
1.
Turn ignition switch ON.
2.
Check the air bag warning lamp status. Refer to
SRC-16, "Air Bag Warning Lamp Diagnosis"
.
NOTE:
SRS does not enter diagnosis mode if no malfunction is detected in user mode.
Is malfunctioning part detected?
YES
>> Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005241123
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3
minutes. (To discharge backup capacitor.)
• Never use unspecified tester or other measuring device.
1.
CHECK HARNESS CONNECTOR
Check the harness connector.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace harness connector.
2.
CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES
>> GO TO 3.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1067
B1072
ASSIST A/B MODULE
[GND-SHORT]
Front passenger air bag module circuit
is shorted to ground
• Disconnection of wiring harness and
short
• Malfunction in front passenger air
bag module
• Malfunction in air bag diagnosis sen-
sor unit
SRC-64
< DTC/CIRCUIT DIAGNOSIS >
B1067, B1072 ASSIST A/B MODULE
NO
>> Replace wiring harness.
3.
REPLACE FRONT PASSENGER AIR BAG MODULE
1.
Replace front passenger air bag module. Refer to
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 4.
NO
>> INSPECTION END
4.
REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
1.
Replace air bag diagnosis sensor unit. Refer to
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 1.
NO
>> INSPECTION END
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