Qashqai J11. Seat belt control system

SBC-2

< PRECAUTION >

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"

INFOID:0000000010323912

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the “SRS AIR BAG” and
“SEAT BELT” of this Service Manual.

WARNING:

Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precautions Necessary for Steering Wheel Rotation After Battery Disconnection

INFOID:0000000010323913

CAUTION:

Comply with the following cautions to prevent any error and malfunction.
• Before removing and installing any control units, first turn the ignition switch to the LOCK position,

then disconnect both battery cables.

• After finishing work, confirm that all control unit connectors are connected properly, then re-connect

both battery cables.

• Always use CONSULT to perform self-diagnosis as a part of each function inspection after finishing

work. If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.

For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.

OPERATION PROCEDURE

Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.

Turn the ignition switch to ACC position.
(At this time, the steering lock will be released.)

Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned.

Perform the necessary repair operation.

PRECAUTIONS

SBC-3

< PRECAUTION >

SBC

When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the ignition switch from ACC position to ON position, then to LOCK position. (The steering wheel will lock
when the ignition switch is turned to LOCK position.)

Perform self-diagnosis check of all control units using CONSULT.

Precautions for Removing Battery Terminal

INFOID:0000000010323915

When disconnecting the battery terminal, pay attention to the following.
• Always use a 12V battery as power source.
• Never disconnect battery terminal while engine is running.
• When removing the 12V battery terminal, turn OFF the ignition

switch and wait at least 30 seconds.

• For vehicles with the engine listed below, remove the battery termi-

nal after a lapse of the specified time:

NOTE:
ECU may be active for several tens of seconds after the ignition switch is turned OFF. If the battery terminal
is removed before ECU stops, then a DTC detection error or ECU data corruption may occur.

• After high-load driving, if the vehicle is equipped with the V9X engine, turn the ignition switch OFF and wait

for at least 15 minutes to remove the battery terminal.
NOTE:
• Turbocharger cooling pump may operate in a few minutes after the ignition switch is turned OFF.
• Example of high-load driving
- Driving for 30 minutes or more at 140 km/h (86 MPH) or more.
- Driving for 30 minutes or more on a steep slope.

• For vehicles with the 2-batteries, be sure to connect the main battery and the sub battery before turning ON

the ignition switch.
NOTE:
If the ignition switch is turned ON with any one of the terminals of main battery and sub battery discon-
nected, then DTC may be detected.

• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.

NOTE:
The removal of 12V battery may cause a DTC detection error.

D4D engine

: 20 minutes

ZD30DDTi

: 60 seconds

HRA2DDT

: 12 minutes

ZD30DDTT

: 60 seconds

K9K engine

: 4 minutes

M9R engine

: 4 minutes

R9M engine

: 4 minutes

V9X engine

: 4 minutes

YD25DDTi

: 2 minutes

SEF289H

SBC-4

< SYSTEM DESCRIPTION >

COMPONENT PARTS

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000010323897

JMHIA2901ZZ

No.

Component

Function

Rear seat belt buckle switch
(Center and RH)

Refer to

SBC-5, "Seat Belt Buckle Switch"

Seat belt buckle switch
(Driver side)

Refer to

SBC-5, "Seat Belt Buckle Switch"

Combination meter

• Receives seat belt buckle switch signal from seat belt buckle switch (driver side) and

air bag diagnosis sensor unit.

• Turns the seat belt warning lamp ON when the seat belt is unfastened.

Air bag diagnosis sensor unit

Transmits seat belt buckle switch signal to Combination meter.
Refer to

SRC-6, "Component Parts Location"

for detailed installation location.

Seat belt buckle switch
(Passenger side)

Refer to

SBC-5, "Seat Belt Buckle Switch"

Rear seat belt buckle switch
(LH)

Refer to

SBC-5, "Seat Belt Buckle Switch"

COMPONENT PARTS

SBC-5

< SYSTEM DESCRIPTION >

SBC

Seat Belt Buckle Switch

INFOID:0000000010323899

• Detects seat belt status and transmits seat belt buckle switch

(driver side) signal to combination meter.

• Detects seat belt status and transmits seat belt buckle switch (pas-

senger side and rear) signal to air bag diagnosis sensor unit.

JMHIA2684ZZ

SBC-6

< SYSTEM DESCRIPTION >

SYSTEM

SYSTEM

SEAT BELT WARNING LAMP CONTROL SYSTEM

SEAT BELT WARNING LAMP CONTROL SYSTEM : System Description

INFOID:0000000010323900

SYSTEM DIAGRAM

SEAT BELT WARNING LAMP OPERATION

Seat belt warning lamp on combination meter turns ON during a period when ignition switch is turns ON until
front seat belts are fastened. Seat belt warning lamp turns OFF when front seat belt is fastened. Seat belt
warning lamp turns ON again when front seat belt is unfastened.

REAR SEAT BELT WARNING LAMP OPEATION

Seat belt warning is displayed on information display for approximately 35 seconds when the following condi-
tions.
• Ignition switch is ON and engine starts running.
• Rear seat belt buckle switch is turned ON (rear seat belt is not fastened) and vehicle speed is 15km/h (9.3

MPH) or more.

Seat belt warning is canceled when the following conditions.
• Ignition switch is turned OFF.
• Approximately 35 seconds are passed since rear seat belt warning is displayed.

SEAT BELT WARNING CHIME OPERATION

Front seat belt warning chime sounds for approximately 90 seconds when the vehicle speed is approximately
15 km/h (9.3 MPH) or more while front seat belts are not fastened. Front seat belt warning chime stops when
front seat belt is fastened.
Rear seat belt warning chime sounds for approximately 50ms after rear seat belt warning is displayed.

JMHIA2902GB

SBC-12

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORK FLOW

GET INFORMATION FOR SYMPTOM

Get detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurs).

Check operation condition of the function that is malfunctioning.

>> GO TO 2.

CHECK DTC

Check DTC.

Perform the following procedure if DTC is detected.

Record DTC and freeze frame data (Print them out using CONSULT.)

Erase DTC.

Study the relationship between the cause detected by DTC and the symptom described by the customer.

Check related service bulletins for information.

Are any symptoms described and any DTC detected?

Symptom is described, DTC is detected>>GO TO 3.
Symptom is described, DTC is not detected>>GO TO 4.
Symptom is not described, DTC is detected>>GO TO 5.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer.
Also study the normal operation and fail-safe related to the symptom.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 5.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 6.

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC CONFIRMATION PROCEDURE for the detected DTC, and then check that DTC is detected
again. At this time, always connect CONSULT to the vehicle, and check self diagnostic results in real time.
If two or more DTCs are detected, refer to DTC INSPECTION PRIORITY CHART, and determine trouble diag-
nosis order.
NOTE:
• Freeze frame data is useful if the DTC is not detected.
• Perform Component Function Check if DTC CONFIRMATION PROCEDURE is not included on Service

Manual. This simplified check procedure is an effective alternative though DTC cannot be detected during
this check.
If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC CONFIR-
MATION PROCEDURE.

Is DTC detected?

YES

>> GO TO 7.

>> Check according to

GI-44, "Intermittent Incident"

DETECT MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS

Detect malfunctioning system according to SYMPTOM DIAGNOSIS based on the confirmed symptom in step
4, and determine the trouble diagnosis order based on possible causes and symptom.

Is the symptom described?

YES

>> GO TO 7.

>> Monitor input data from related sensors or check voltage of related module terminals using CON-

SULT.

DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE

DIAGNOSIS AND REPAIR WORK FLOW

SBC-13

< BASIC INSPECTION >

SBC

Inspect according to Diagnosis Procedure of the system.

Is malfunctioning part detected?

YES

>> GO TO 8.

>> Check according to

GI-44, "Intermittent Incident"

REPAIR OR REPLACE THE MALFUNCTIONING PART

Repair or replace the malfunctioning part.

Reconnect parts or connectors disconnected during Diagnosis Procedure again after repair and replace-
ment.

Check DTC. If DTC is detected, erase it.

>> GO TO 9.

FINAL CHECK

When DTC is detected in step 2, perform DTC CONFIRMATION PROCEDURE again, and then check that the
malfunction is repaired securely.
When symptom is described by the customer, refer to confirmed symptom in step 3 or 4, and check that the
symptom is not detected.

Is DTC detected and does symptom remain?

YES-1 >> DTC is detected: GO TO 7.
YES-2 >> Symptom remains: GO TO 4.
NO

>> Before returning the vehicle to the customer, always erase DTC.

SBC-14

< DTC/CIRCUIT DIAGNOSIS >

SEAT BELT BUCKLE SWITCH (DRIVER SIDE)

DTC/CIRCUIT DIAGNOSIS

SEAT BELT BUCKLE SWITCH (DRIVER SIDE)

Description

INFOID:0000000010500922

• Detects whether or not the seat belt is fastened when the ignition switch turns ON. If the seat belt is not fas-

tened, illuminates the seat belt warning lamp on the combination meter.

• The seat belt buckle switch is installed in the seat belt buckle.

Diagnosis Procedure

INFOID:0000000010500924

CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE)

Check seat belt buckle switch (driver side).
Refer to

SBC-14, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 2.

>> Replace seat belt buckle (driver side). Refer to

SB-8, "FRONT SEAT BELT BUCKLE : Removal

and Installation"

CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT

Disconnect seat belt buckle switch (driver side) connector.

Check continuity between seat belt buckle switch (driver side) and ground.

LHD models

RHD models

Is the inspection result normal?

YES

>> INSPECTION END

>> Repair or replace harness.

Component Inspection

INFOID:0000000010500925

CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE)

Turn ignition switch OFF.

Disconnect seat belt buckle switch connector.

Check continuity of seat belt buckle (driver side).

Is the inspection result normal?

YES

>> INSPECTION END

>> Replace seat belt buckle (driver side). Refer to

SB-8, "FRONT SEAT BELT BUCKLE : Removal

and Installation"

Seat belt buckle switch (driver side)

Ground

Continuity

Connector

Terminal

B11

Existed

Seat belt buckle switch (driver side)

Ground

Continuity

Connector

Terminal

B69

Existed

Seat belt buckle switch (driver side)

Condition

Continuity

Terminal

When driver side seat belt is
not fastened

Existed

When driver side seat belt is
fastened

Not existed

SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)

SBC-15

< DTC/CIRCUIT DIAGNOSIS >

SBC

SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)

Description

INFOID:0000000010500926

• Detects whether or not the seat belt is fastened when the ignition switch turns ON. If the seat belt switch is

not fastened, illuminates the seat belt warning lamp on the combination meter.

• The seat belt buckle switch is installed in the seat belt buckle.

Diagnosis Procedure

INFOID:0000000010500928

CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)

Check seat belt buckle switch (passenger side).
Refer to

SBC-16, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 2.

>> Replace seat belt buckle (passenger side). Refer to

SB-8, "FRONT SEAT BELT BUCKLE :

Removal and Installation"

CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT1

Disconnect seat belt buckle switch (passenger side) connector and occupant sensor connector.

Check continuity between seat belt buckle switch (passenger side) and occupant sensor.

LHD models

RHD models

Check continuity between seat belt buckle switch (passenger side) and ground.

LHD models

RHD models

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair or replace harness.

CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT2

Check continuity between occupant sensor and ground.

LHD models

RHD models

Seat belt buckle switch (passenger side)

Occupant sensor

Continuity

Connector

Terminal

Connector

Terminal

B69

B91

Existed

Seat belt buckle switch (passenger side)

Occupant sensor

Continuity

Connector

Terminal

Connector

Terminal

B11

B20

Existed

Seat belt buckle switch (passenger side)

Ground

Continuity

Connector

Terminal

B69

Not existed

Seat belt buckle switch (passenger side)

Ground

Continuity

Connector

Terminal

B11

Not existed

Occupant sensor

Ground

Continuity

Connector

Terminal

B91

Existed

Occupant sensor

Ground

Continuity

Connector

Terminal

B20

Existed

SBC-16

< DTC/CIRCUIT DIAGNOSIS >

SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)

Is the inspection result normal?

YES

>> Replace seat cushion trim. Refer to

SE-28, "Removal and Installation"

>> Repair or replace harness.

Component Inspection

INFOID:0000000010500929

CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)

Turn ignition switch OFF.

Disconnect seat belt buckle switch connector.

Check continuity of seat belt buckle (passenger side).

Is the inspection result normal?

YES

>> INSPECTION END

>> Replace seat belt buckle (passenger side). Refer to

SB-8, "FRONT SEAT BELT BUCKLE :

Removal and Installation"

Seat belt buckle switch (passenger side)

Condition

Continuity

Terminal

When driver side seat belt is
not fastened

Existed

When driver side seat belt is
fastened

Not existed

Qashqai J11. Seat belt control system - part 1