Nissan Versa Sedan. Instruction - part 748

B1017, B1018, B1020, B1021, B1022, B1025, B1032, B1048 OCS SYSTEM

SRC-87

< DTC/CIRCUIT DIAGNOSIS >

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B1017, B1018, B1020, B1021, B1022, B1025, B1032, B1048 OCS SYSTEM

Description

INFOID:0000000009269187

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 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-4, "Component Parts Location"

.

DTC Logic

INFOID:0000000009269188

DTC DETECTION LOGIC 

With CONSULT

Without 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-88, "Diagnosis Procedure"

.

CONSULT name

DTC

DTC detecting condition

Repair order

OCCUPANT SENS C/U

[UNIT FAIL]

B1017 The OCS control unit is malfunctioning.

1.

Visually check the wiring harness connec-
tions to the OCS control unit.

2.

Replace the harness if it has visible damage.

3.

Replace the OCS control unit and OCS sen-
sors (seat frame and adjuster assembly).

B1020

B1021

OCCUPANT SENS

[UNIT FAIL]

B1018 The OCS sensor is malfunctioning.

1.

Visually check the wiring harness connec-
tions to the OCS sensors.

2.

Replace the harness if it has visible damage.

3.

Replace the OCS control unit and OCS sen-
sors (seat frame and adjuster assembly).

B1025

B1032

B1048

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 
harness.

2.

Replace the harness if it has visible damage.

3.

Replace the OCS control unit and OCS sen-
sors (seat frame and adjuster assembly).

4.

Replace the air bag diagnosis sensor unit.

AWHIA0357GB

SRC-88

< DTC/CIRCUIT DIAGNOSIS >

B1017, B1018, B1020, B1021, B1022, B1025, B1032, B1048 OCS SYSTEM

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-88, "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, "Trouble Diagnosis 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-88, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009269189

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 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-45, "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.

B1017, B1018, B1020, B1021, B1022, B1025, B1032, B1048 OCS SYSTEM

SRC-89

< DTC/CIRCUIT DIAGNOSIS >

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Is DTC still current?

YES

>> GO TO 5.

NO

>> Refer to

GI-45, "Intermittent Incident"

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5.

AIR BAG DIAGNOSIS SENSOR UNIT

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

SR-27, "Removal and Installation"

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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.

REPLACE OCS CONTROL UNIT AND SENSORS

Replace the OCS control unit and OCS sensors (seat frame and adjuster assembly).  Refer to 

SR-30,

"Removal and Installation"

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>> END

SRC-90

< DTC/CIRCUIT DIAGNOSIS >

B1209 – B1210 COLLISION DETECTION

B1209 – B1210 COLLISION DETECTION

Description

INFOID:0000000009269190

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 more air bags or pre-tensioners. If this DTC is detected after a SRS repair, the air

bag diagnosis sensor unit has not yet been replaced. This DTC can not be erased.

PART LOCATION

Refer to 

SRC-4, "Component Parts Location"

.

DTC Logic

INFOID:0000000009269191

DTC DETECTION LOGIC 

With CONSULT

DTC CONFIRMATION PROCEDURE (With CONSULT)

1.

INSPECTION START

Turn ignition switch ON.

>> GO TO 2.

2.

CHECK SELF-DIAG RESULT

Check for the DTC on CONSULT.
Is the DTC detected?

YES

>> Refer to 

SRC-90, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009269192

Refer to 

SR-5, "For Frontal Collision"

 or 

SR-7, "For Side and Rollover Collision"

.

CONSULT name

DTC

DTC detecting condition

Repair order

FRONTAL COLLISION 

DETECTION

B1209

Driver and/or front passenger air bag mod-
ules are deployed.

Refer to 

SR-5, "For Frontal Collision"

.

SIDE COLLISION DE-

TECTION

B1210

Side and/or curtain air bag modules are 
deployed.

Refer to 

SR-7, "For Side and Rollover Collision"

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