Nissan Altima 2007-2012 Service Manual: B1017 – b1022 occupant classification system
Description
DTC B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM (OCS)
The occupant classification system control unit is wired to the air bag diagnosis sensor unit. The air bag diagnosis sensor unit will monitor the occupant classification system for control unit and sensor mat failures and interuptions in communication between the OCS control unit and the air bag diagnosis sensor unit.
PART LOCATION
Refer to SRC-7, "SRS Component Parts Location".
DTC Logic
DTC DETECTION LOGIC
With CONSULT-lll
Without CONSULT-lll
DTC CONFIRMATION PROCEDURE (With CONSULT-lll)
1.INSPECTION START
Turn ignition switch ON.
>> GO TO 2.
2.CHECK SELF-DIAG RESULT
Check for the DTC on CONSULT-lll.
Is the DTC detected? YES >> Refer to SRC-55, "Diagnosis Procedure (Component Diagnosis)".
NO >> Inspection End.
DTC CONFIRMATION PROCEDURE (Without CONSULT-lll)
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.IGNITION SWITCH
After air bag warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.
>> GO TO 3
3.WAIT TIME
Wait more than 3 seconds.
>> GO TO 4
4.REPEAT STEPS
Repeat steps 1 to 3 twice.
>> GO TO 5
5.IGNITION SWITCH
Turn ignition switch ON.
>> GO TO 6
6.DIAGNOSTIC MODE
SRS system is now in diagnostic mode and AIR BAG warning lamp flashes. Refer to SRC-7, "SRS Component Parts Location".
>> END
Diagnosis Procedure (Component Diagnosis)
Recheck SRS after each replacement.
1.DTC
Does CONSULT-III indicate B1022? YES or NO
YES >> GO TO 2
NO >> GO TO 4
2.HARNESS CONNECTOR
Is there any visible damage to the connector? YES or NO
YES >> Replace the harness.
NO >> GO TO 3
3.WIRING HARNESS
Is there any visible damage to the harness? YES or NO
YES >> Replace the harness.
NO >> GO TO 4
4.RH FRONT SEAT CUSHION ASSEMBLY
Replace the RH front seat cushion assembly. Refer to SE-23, "Removal and Installation".
>> GO TO 5
5.AIR BAG DIAGNOSIS SENSOR UNIT
Replace the air bag diagnosis sensor unit. Refer to SR-17, "Removal and Installation".
>> END.
B1023 passenger air bag off indicator
Description
DTC B1023 FRONT PASSENGER AIR BAG OFF INDICATOR
The front passenger air bag off indicator is wired to the air bag diagnosis
sensor unit. The air bag diagnosis
sensor unit monitors the ...
B1209 – b1210 collision detection
Description
DTC B1209 - B1210 COLLISION DETECTION
The air bag diagnosis sensor unit will set this DTC if it has detected a
collision which has resulted in a frontal
or side deployment of one or m ...
Other materials:
P1554 battery current sensor
Description
The power generation voltage variable control enables fuel consumption to be
decreased by reducing the
engine load which is caused by the power generation of the generator. The
battery current sensor is installed
to the battery cable at the negative terminal. The sensor measures t ...
CD changer
Diagnosis Procedure
1.CHECK FUSE
Check that the following fuses of the CD changer are not blown.
Are the fuses OK?
YES >> GO TO 2
NO >> Be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK POWER SUPPLY CIRCUIT
Check voltage between CD changer harness con ...
Spiral cable
Removal and Installation
REMOVAL
CAUTION:
• Before servicing, turn ignition switch OFF, disconnect both battery terminals
and wait at least three
minutes.
• Do not use air tools or electric tools for servicing.
• Do not disassemble the spiral cable.
• Do not allow oil, grease, ...