B1018

Description


DTC B1017, B1018, B1020, B1021, B1022, B1025, B1032, B1048 OCCUPANT CLASSIFICATION


SYSTEM (OCS)

The OCS control unit is wired to the air bag diagnosis sensor unit. The air bag diagnosis sensor unit will monitor the OCS for failures and interruptions in communication between the OCS control unit and the air bag diagnosis sensor unit.

PART LOCATION

Refer to "Component Parts Location" Locations.


DTC Logic


DTC DETECTION LOGIC

With CONSULT





Without CONSULT






DTC CONFIRMATION PROCEDURE (With CONSULT)


1. INSPECTION START

Turn ignition switch ON.
- GO TO 2.
Revision: March 20122013 Infiniti JX

2. CHECK SELF-DIAG RESULT

Check for the DTC on CONSULT.
Is the DTC detected?
YES- Refer to "Diagnosis Procedure" .
NO- Inspection End.

DTC CONFIRMATION PROCEDURE (Without CONSULT)

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 "Flash Code Index" Manufacturer Code Charts.
-END


Diagnosis Procedure

Recheck SRS after each corrective action.

1. HARNESS CONNECTOR

Is there any visible damage to the OCS sub-harness connectors or body connectors?
YES or NO
YES- Replace the harness.
NO- GO TO 2

2. WIRING HARNESS

Is there any visible damage to the OCS sub-harness or body harness?
YES or NO
YES- Replace the harness.
NO- GO TO 3
Revision: March 20122013 Infiniti JX

3. REPLACE OCS CONTROL UNIT AND SENSORS

Replace the OCS control unit and OCS sensors (seat frame and adjuster assembly). Refer to "Removal and Installation" Removal and Installation.
- GO TO 4

4. AIR BAG DIAGNOSIS SENSOR UNIT

Replace the air bag diagnosis sensor unit. Refer to "Removal and Installation" Removal and Installation.
-END.
Revision: March 20122013 Infiniti JX