Nissan Murano Z51. Manual - part 1315

SRC-30

< DTC/CIRCUIT DIAGNOSIS >

[FOR USA AND CANADA]

B1018 OCCUPANT SENS

2.

CHECK AIR BAG WARNING LAMP

Check the air bag warning lamp status.
Is malfunctioning part detected?

YES

>> Refer to warning lamp flash code chart.

SRC-159

.

NO

>> INSPECTION END.

Diagnosis Procedure

INFOID:0000000005513504

With CONSULT-lll

WARNING:

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3

minutes. (To discharge backup capacitor.)

• Do not 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

>> Repair or replace harness connectors.

2.

CHECK WIRING HARNESS

Check the wiring harness externals.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace wiring harness.

3.

CHECK OCCUPANT CLASSIFICATION SYSTEM SENSOR

1.

Replace occupant classification system sensor. (front passenger side seat cushion assembly.)

2.

Check the screen of CONSULT-lll.

Is the inspection result normal?

YES

>> INSPECTION END.

NO

>> Check the intermittent incident. Refer to 

GI-39, "Intermittent Incident"

.

B1022 OCCUPANT SENS C/U

SRC-31

< DTC/CIRCUIT DIAGNOSIS >

[FOR USA AND CANADA]

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B1022 OCCUPANT SENS C/U

Description

INFOID:0000000005513505

DTC B1022 [COMM FAIL] OCCUPANT SENS C/U

Suppresses the deployment of front passenger air bag when the condition of passenger seat is empty or child
and child-seat. And turns on front passenger air bag OFF indicator (Cut-off telltale) lamp when the condition of
passenger seat is 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 electro-diagnosis tester CONSULT-lll
can detect the cause.

OPERATION

This unit classifies occupant in passenger seat and detects electrical malfunction in Occupant Classification
System (OCS) and transmits malfunction information to air bag control unit.

STRUCTURE

It is integrated into the seat sensor mat and detects the occupants and Occupant Classification System (OCS)
control unit that classifies the occupants.

INSTALLATION

 Occupant Classification System (OCS) control unit is installed in the passenger seat cushion.

DTC Logic

INFOID:0000000005513506

DTC DETECTION LOGIC

With CONSULT-lll

DTC No. Index (“SELF-DIAG [CURRENT]”), (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)

DTC CONFIRMATION PROCEDURE (With CONSULT-lll)

1.

INSPECTION START

Turn ignition switch ON.

>> GO TO 2.

2.

CHECK SELF-DIAG RESULT

Check the screen of CONSULT-lll.
Is malfunctioning part detected?

YES

>> Refer to 

SRC-32, "Diagnosis Procedure"

.

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.

INSPECTION START

Turn ignition switch ON.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B1022

OCCUPANT SENS C/U 
[COMM FAIL]

Trouble occurs in OCS-C/U, circuit of 
OCS-C/U-ACU or ACU

• Disconnection of wiring harness
• Internal breakdown in occupant clas-

sification system control unit

• Internal breakdown in air bag diag-

nosis sensor unit

SRC-32

< DTC/CIRCUIT DIAGNOSIS >

[FOR USA AND CANADA]

B1022 OCCUPANT SENS C/U

>> GO TO 2.

2.

CHECK AIR BAG WARNING LAMP

Check the air bag warning lamp status.

Is malfunctioning part detected?

YES

>> Refer to warning lamp flash code chart.

SRC-159

.

NO

>> INSPECTION END.

Diagnosis Procedure

INFOID:0000000005513507

With CONSULT-lll

WARNING:

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3

minutes. (To discharge backup capacitor.)

• Do not 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

>> Repair or replace harness connectors.

2.

CHECK WIRING HARNESS

Check the wiring harness externals.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace wiring harness.

3.

CHECK OCCUPANT CLASSIFICATION SYSTEM (C/U)

1.

Replace occupant classification system (C/U). (front passenger side seat cushion assembly.)

2.

Check the screen of CONSULT-lll.

Is the inspection result normal?

YES

>> INSPECTION END.

NO

>> Check the intermittent incident. Refer to 

GI-39, "Intermittent Incident"

.

B1023 PASS A/B INDCTR CKT

SRC-33

< DTC/CIRCUIT DIAGNOSIS >

[FOR USA AND CANADA]

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B1023 PASS A/B INDCTR CKT

Description

INFOID:0000000005513508

DTC B1023 PASS A/B INDCTR CKT

Suppresses the deployment of front passenger air bag when the condition of passenger seat is empty or child
and child-seat. And turns on front passenger air bag OFF indicator (Cut-off telltale) lamp when the condition of
passenger seat is 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 electro-diagnosis tester CONSULT-lll
can detect the cause.

OPERATION

Turns on front passenger air bag OFF indicator (Cut-off telltale) when the passenger seat is empty or occupied
by child-seat and child.

STRUCTURE

Front passenger air bag OFF indicator (Cut-off telltale) with LED illumination.

INSTALLATION

Front passenger air bag OFF indicator (Cut-off telltale) is installed at the instrument panel center.

DTC Logic

INFOID:0000000005513509

DTC DETECTION LOGIC

With CONSULT-lll

DTC No. Index (“SELF-DIAG [CURRENT]”), (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)

DTC CONFIRMATION PROCEDURE (With CONSULT-lll)

1.

INSPECTION START

Turn ignition switch ON.

>> GO TO 2.

2.

CHECK SELF-DIAG RESULT

Check the screen of CONSULT-lll.

Is malfunctioning part detected?

YES

>> Refer to 

SRC-34, "Diagnosis Procedure"

.

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.

INSPECTION START

Turn ignition switch ON.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B1023

PASS A/B INDCTR CKT 
[UNIT FAIL]

Cut-off telltale circuit is open or shorted 
to ground or the circuits are shorted 
each other

• Disconnection of wiring harness
• Internal breakdown in front passen-

ger air bag cut-off indicator unit

• Internal breakdown in air bag diag-

nosis sensor unit