Nissan Frontier. Manual - part 1171

B1023 PASSENGER AIR BAG OFF INDICATOR

SRC-49

< DTC/CIRCUIT DIAGNOSIS >

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B1023 PASSENGER AIR BAG OFF INDICATOR

Description

INFOID:0000000009480004

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 front passenger air bag off indicator and circuit for failures.

PART LOCATION

Refer to 

SRC-7, "SRS Component Parts Location"

.

DTC Logic

INFOID:0000000009480005

DTC DETECTION LOGIC 

With CONSULT

DTC CONFIRMATION PROCEDURE (With CONSULT)

1.

CHECK SELF-DIAG RESULT

1. Turn ignition switch ON.

2. Check for DTC using CONSULT.
Is the DTC detected?

YES (Current DTC)>>Refer to 

SRC-49, "Diagnosis Procedure"

.

YES (Past DTC)>>GO TO 2.

NO

>> Inspection End.

2.

ERASE SELF-DIAG RESULT

Erase the DTC using CONSULT.
Can the DTC be erased?

YES

>> Inspection End.

NO

>> Refer to 

SRC-49, "Diagnosis Procedure"

.

DTC CONFIRMATION PROCEDURE (Without CONSULT)

1.

CHECK SELF-DIAG RESULT

1. Turn ignition switch ON.

2. Check the air bag warning lamp status. Refer to 

SRC-15, "Self-Diagnosis Function (Without CONSULT)"

.

NOTE:

SRS will not enter diagnosis mode if no malfunction is detected in user mode.
Is the DTC detected?

YES

>> Refer to 

SRC-49, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009480006

1.

HARNESS CONNECTOR

Visually inspect all applicable harness connectors for the following:

• Visible damage to connector or terminal

• Loose terminal

• Poor connection

CONSULT name

DTC

DTC detecting condition

Repair order

PASS A/B INDCTR CKT

B1023

Front passenger air bag off indicator is 
malfunctioning.

1.

Visually check the wiring harness connection.

2.

Replace the harness if it has visible damage.

3.

Replace the front passenger air bag off indi-
cator.

4.

Replace the air bag diagnosis sensor unit.

5.

Replace the related harness.

SRC-50

< DTC/CIRCUIT DIAGNOSIS >

B1023 PASSENGER AIR BAG OFF INDICATOR

NOTE:

All harness connectors should be inspected from the air bag diagnosis unit to the end component (including

any in-line connectors).

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Perform one of the following repairs:

• Visible damage: Replace the harness.

• Loose terminal: Secure the terminal.

• Poor connection: Secure the connection.

2.

CONFIRM DTC

1. Reconnect all harness connectors.

2. Turn ignition switch ON.

3. Check for DTC using CONSULT.
Is DTC still current?

YES

>> GO TO 3

NO

>> Refer to 

GI-42, "Intermittent Incident"

.

3.

WIRING HARNESS

Check the wiring harness for visible damage

NOTE

.

NOTE:

The entire wiring harness should be inspected from the air bag diagnosis sensor unit to the end component

(including any in-line connectors).
Is the inspection result normal?

YES

>> GO TO 4

NO

>> Replace the harness.

4.

CONFIRM DTC

1. Reconnect all harness connectors.

2. Turn ignition switch ON.

3. Check for DTC using CONSULT.
Is DTC still current?

YES

>> GO TO 5

NO

>> Refer to 

GI-42, "Intermittent Incident"

.

5.

PASSENGER AIR BAG OFF INDICATOR

1. Replace the passenger air bag off indicator. Refer to 

IP-15, "Removal and Installation"

.

2. Turn ignition switch ON.

3. Check for DTC using CONSULT.
Is DTC still current?

YES

>> GO TO 6

NO

>> Clear DTC. Inspection End.

6.

AIR BAG DIAGNOSIS SENSOR UNIT

1. Replace the air bag diagnosis sensor unit. Refer to 

SR-23, "Removal and Installation"

.

2. Turn ignition switch ON.

3. Check for DTC using CONSULT.
Is DTC still current?

YES

>> GO TO 7

NO

>> Clear DTC. Inspection End.

7.

RELATED HARNESS

Replace the related harness.

>> END

B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM

SRC-51

< DTC/CIRCUIT DIAGNOSIS >

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B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM

Description

INFOID:0000000009480007

DTC B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM (OCS)

The OCS control unit is wired to the air bag diagnosis sensor unit. The air bag diagnosis sensor unit will mon-

itor the OCS for failures and interruptions 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

INFOID:0000000009480008

DTC DETECTION LOGIC 

With CONSULT

DTC CONFIRMATION PROCEDURE (With CONSULT)

1.

CHECK SELF-DIAG RESULT

1. Turn ignition switch ON.

2. Check for DTC using CONSULT.
Is the DTC detected?

YES (Current DTC)>>Refer to 

SRC-52, "Diagnosis Procedure"

.

YES (Past DTC)>>GO TO 2.

NO

>> Inspection End.

2.

ERASE SELF-DIAG RESULT

Erase the DTC using CONSULT.
Can the DTC be erased?

YES

>> Inspection End.

NO

>> Refer to 

SRC-52, "Diagnosis Procedure"

.

DTC CONFIRMATION PROCEDURE (Without CONSULT)

1.

CHECK SELF-DIAG RESULT

1. Turn ignition switch ON.

2. Check the air bag warning lamp status. Refer to 

SRC-15, "Self-Diagnosis Function (Without CONSULT)"

.

NOTE:

SRS will not enter diagnosis mode if no malfunction is detected in user mode.
Is the DTC detected?

CONSULT name

DTC

DTC detecting condition

Repair order

OCCUPANT SENS C/U

[UNIT FAIL]

B1017 The OCS control unit is malfunctioning.

1.

Replace the OCS control unit.

B1020

B1021

OCCUPANT SENS

[UNIT FAIL]

B1018

The OCS sensor mat is malfunctioning.

OCCUPANT SENS

[OTHER FAIL]

B1019

The OCS is malfunctioning.

OCCUPANT SENS C/U

[COMM FAIL]

B1022

Communication between the OCS control 
unit and the air bag diagnosis sensor unit is 
interrupted.

1.

Visually check the wiring harness connec-
tions to the OCS control unit and the seat sub-
hasrness.

2.

Replace the harness if it has visible damage.

3.

Replace the OCS control unit.

4.

Replace the air bag diagnosis sensor unit.

SRC-52

< DTC/CIRCUIT DIAGNOSIS >

B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM

YES

>> Refer to 

SRC-52, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009480009

1.

HARNESS CONNECTOR

Visually inspect all applicable harness connectors for the following:

• Visible damage to connector or terminal

• Loose terminal

• Poor connection

NOTE:

All harness connectors should be inspected from the air bag diagnosis sensor unit to the end component

(including any in-line connectors).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Perform one of the following repairs:

• Visible damage: Replace the harness.

• Loose terminal: Secure the terminal.

• Poor connection: Secure the connection.

2.

CONFIRM DTC

1. Reconnect all harness connectors.

2. Turn ignition switch ON.

3. Check for DTC using CONSULT.
Is DTC still current?

YES

>> GO TO 3.

NO

>> Refer to 

GI-42, "Intermittent Incident"

.

3.

WIRING HARNESS

Check the wiring harness for visible damage

NOTE

.

NOTE:

The entire wiring harness should be inspected from the air bag diagnosis sensor unit to the end component

(including any in-line connectors).
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace the harness.

4.

CONFIRM DTC

1. Reconnect all harness connectors.

2. Turn ignition switch ON.

3. Check for DTC using CONSULT.
Is DTC still current?

YES

>> GO TO 5.

NO

>> Refer to 

GI-42, "Intermittent Incident"

.

5.

REPLACE OCS CONTROL UNIT

1. Replace the OCS control unit. Refer to 

SR-25, "Removal and Installation"

.

2. Turn ignition switch ON.

3. Check for DTC using CONSULT.
Is DTC still current?

YES

>> GO TO 6.

NO

>> Clear DTC. Inspection End.

6.

AIR BAG DIAGNOSIS SENSOR UNIT

1. Replace the air bag diagnosis sensor unit. Refer to 

SR-23, "Removal and Installation"

.

2. Turn ignition switch ON.

3. Check for DTC using CONSULT.
Is DTC still current?