Infiniti FX35, FX50 (S51). Manual — part 1718
B1025, B1032, B1048 OCS SENSOR
SRC-37
< DTC/CIRCUIT DIAGNOSIS >
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B1025, B1032, B1048 OCS SENSOR
Description
INFOID:0000000005241082
Suppresses the deployment of front passenger air bag when the condition of passenger seat is empty or occu-
pied with a child and child-seat. Also illuminates front passenger air bag OFF indicator lamp when the condi-
tion of passenger seat is occupied with a child-seat and child. In case of malfunction the blinking of the air bag
warning lamp reports the malfunction to driver, and by the on board self-diagnosis system or CONSULT-III can
detect the cause.
OPERATION
This unit classifies occupant in passenger seat and detects electrical malfunction in Occupant Detection Sys-
tem and transmits malfunction information to air bag control unit.
STRUCTURE
It is integrated into the seat sensor mat and detects the occupants and Occupant Detection System control
unit that classifies the occupants.
INSTALLATION
Occupant Detection System control unit is installed in the passenger seat cushion.
DTC Logic
INFOID:0000000005241083
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAG RESULT
With CONSULT-III
1.
Turn ignition switch ON.
2.
Perform “AIR BAG” Self Diagnostic Result CONSULT-III.
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:0000000005241084
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.
DTC No.
Trouble diagnosis name
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
SRC-38
< DTC/CIRCUIT DIAGNOSIS >
B1025, B1032, B1048 OCS SENSOR
2.
CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace wiring harness.
3.
CHECK OCCUPANT DETECTION SYSTEM CONTROL UNIT
1.
Replace seat cushion frame. 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
B1026, B1027, B1028, B1029, B1030, B1031 DIAGNOSIS SENSOR UNIT
SRC-39
< DTC/CIRCUIT DIAGNOSIS >
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B1026, B1027, B1028, B1029, B1030, B1031 DIAGNOSIS SENSOR UNIT
Description
INFOID:0000000005241085
Checks the entire SRS and displays the malfunction either by illuminating or blinking the air bag warning lamp
on the combination meter. Malfunctioning part can be detected by on board self-diagnosis system and CON-
SULT-III.
OPERATION
It detects a shock that exceeds a specified level and monitors whether the driver and passenger air bags, front
side air bag, side curtain air bag and pre-tensioner seat belts operate normally.
STRUCTURE
It contains the “G” sensors for both frontal and side collisions and spare battery function in case of main bat-
tery damage in collision.
INSTALLATION
Air bag diagnosis sensor unit is installed under the center console with fixed bolts.
DTC Logic
INFOID:0000000005241086
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:0000000005241087
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 connectors.
2.
CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1026
B1027
B1028
B1029
B1030
B1031
CONTROL UNIT
Air bag diagnosis sensor unit is mal-
functioning or out of the specification
• Malfunction in air bag diagnosis sen-
sor unit
• Configuration in air bag diagnosis
sensor unit does not match the vehi-
cles specification
SRC-40
< DTC/CIRCUIT DIAGNOSIS >
B1026, B1027, B1028, B1029, B1030, B1031 DIAGNOSIS SENSOR UNIT
YES
>> GO TO 3.
NO
>> Replace wiring harness.
3.
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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