Nissan Quest E52. Instruction — part 1131
B1023 PASS A/B INDCTR CKT
SRC-53
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 1.
NO
>> INSPECTION END
SRC-54
< DTC/CIRCUIT DIAGNOSIS >
B1025, B1032, B1048 OCS SENSOR
B1025, B1032, B1048 OCS SENSOR
DTC Logic
INFOID:0000000009649869
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAG RESULT
With CONSULT
1.
Turn ignition switch ON.
2.
Perform “AIR BAG” Self Diagnostic Result CONSULT.
Without CONSULT
1.
Turn ignition switch ON.
2.
Check the air bag warning lamp status. Refer to
SRC-15, "On Board Diagnosis Function"
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:0000000009649870
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.
DIAGNOSTIC PROCEDURE
1.
CHECK HARNESS CONNECTOR
Check the connection of harness connector.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace harness connectors.
2.
CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace wiring harness.
3.
REPLACE OCCUPANT DETECTION SYSTEM CONTROL UNIT
1.
Replace occupant detection system control unit. Refer to
SR-32, "Removal and Installation"
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 4.
NO
>> INSPECTION END
4.
REPLACE OCCUPANT DETECTION SYSTEM SEAT SENSOR
DTC
Display contents of
CONSULT
DTC detecting condition
Possible cause
B1025
B1032
B1048
OCS SENSOR
Malfunction occurs in Occupant Detec-
tion System control unit, circuit of Occu-
pant Detection System control unit-Air
bag diagnosis sensor unit or Air bag di-
agnosis sensor unit
• Disconnection of wiring harness
• Internal breakdown in Occupant De-
tection System control unit
• Malfunction in air bag diagnosis sen-
sor unit
B1025, B1032, B1048 OCS SENSOR
SRC-55
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
1.
Replace passenger seat cushion frame. Refer to
(Instruction seat) or
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 5.
NO
>> INSPECTION END
5.
REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
1.
Replace air bag diagnosis sensor unit. Refer to
SR-29, "Removal and Installation"
.
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 1.
NO
>> INSPECTION END
SRC-56
< DTC/CIRCUIT DIAGNOSIS >
B1026, B1027, B1028, B1029, B1030, B1031 DIAGNOSIS SENSOR UNIT
B1026, B1027, B1028, B1029, B1030, B1031 DIAGNOSIS SENSOR UNIT
DTC Logic
INFOID:0000000009649871
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAG RESULT
With CONSULT
1.
Turn ignition switch ON.
2.
Perform “Self Diagnostic Result” mode of “AIR BAG” using CONSULT.
Without CONSULT
1.
Turn ignition switch ON.
2.
Check the air bag warning lamp status. Refer to
SRC-15, "On Board Diagnosis Function"
NOTE:
SRS does not enter the diagnosis mode if no malfunction is detected in the user mode.
Is malfunctioning part detected?
YES
>> Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009649872
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes
or more. (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 connectors.
2.
CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace wiring harness.
3.
REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
1.
Replace air bag diagnosis sensor unit. Refer to
SR-29, "Removal and Installation"
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 1.
NO
>> INSPECTION END
DTC
Display contents of
CONSULT
DTC detecting condition
Possible cause
B1026
B1027
B1028
B1029
B1030
B1031
CONTROL UNIT
Air bag diagnosis sensor unit is malfunctioning
Malfunction in air bag diagnosis sensor unit
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