Your Vehicle: 2009 Nissan-Datsun Altima V6-3.5L (VQ35DE)
 
Vehicle » A L L Diagnostic Trouble Codes ( DTC ) » Testing and Inspection » B Code Charts » B1020  
 
 
  B1020  
 

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 See: Restraints and Safety Systems\Air Bag Systems\Locations\SRS Air Bag System.

DTC Logic

DTC DETECTION LOGIC

With CONSULT-III

  

Without CONSULT-III

  

DTC CONFIRMATION PROCEDURE (With CONSULT-III)
1.Inspection START
Turn ignition switch ON.
>> GO TO 2.
2.CHECK SELF-DIAG RESULT
Check for the DTC on CONSULT-III.
Is the DTC detected?
YES >> Refer to Diagnosis Procedure (Component Diagnosis).
NO >> Inspection 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.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 See: Restraints and Safety Systems\Air Bag Systems\Locations\SRS Air Bag System.
>> 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 See: Body and Frame\Seats\Service and Repair\Removal and Replacement\Front Seat\Removal And Installation\Coupe.
>> GO TO 5
5.AIR BAG DIAGNOSIS SENSOR UNIT
Replace the air bag diagnosis sensor unit. Refer to See: Relays and Modules\Relays and Modules - Restraints and Safety Systems\Air Bag Control Module\Service and Repair.
>> END.