Nissan Cube. Manual - part 875

OCCUPANT DETECTION SYSTEM

SRC-17

< SYSTEM DESCRIPTION >

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Component Description

INFOID:0000000009946092

A.

Behind headlining

B.

Behind center pillar lower gamish

C.

Behind center console assembly

D.

Backside of passenger seat cushion 
frame

E.

Behind glove box assembly

F.

View with front grille removed

G.

View with steering wheel removed

Component parts

Outline of function

Occupant Detection System sensor

Detects if the passenger seat is empty or occupied

Occupant Detection System control unit

Transmits the passenger seat status (occupied or empty) to air bag diagnosis sensor unit

Passenger air bag OFF indicator

Turns the passenger air bag OFF indicator lamp ON when the passenger seat is occupied 
by a child or a child-seat

Air bag diagnosis sensor unit

• Performs the deploy judgement of passenger air bag based on the information from Oc-

cupant Detection System control unit.

• Passenger air bag OFF indicator turns ON or turns OFF when passenger state signal de-

tected by Occupant Detection System control unit is received.

SRC-18

< SYSTEM DESCRIPTION >

ON BOARD DIAGNOSTIC (OBD) SYSTEM

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Diagnosis Description

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CAUTION:

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

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

• Never repair, splice or modify the SRS wiring harness. If the harness is damaged, replace it with a

new one.

• Keep ground portion clean.

DIAGNOSIS FUNCTION

• The SRS self-diagnosis results can be read with air bag warning lamp and/or CONSULT.
• The user mode is exclusively prepared for the customer (driver). This mode warns the driver of a system

malfunction through the operation of the air bag warning lamp.

• The diagnosis mode allows the technician to locate and inspect the malfunctioning part.
• The mode applications for the air bag warning lamp and CONSULT are as per the following items.

×

: Application, —: Not application

Diagnosis with Air Bag Warning Lamp

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SELF DIAGNOSIS FUNCTION

There are two self diagnosis functions with air bag warning lamp per the following items.
• USER  MODE
• DIAGNOSIS MODE

CHANGE DIAGNOSIS MODE

• Diagnosis mode changes from user mode to diagnosis mode when changing operation is performed.
• In user mode, when SRS air bag warning lamp is not blinking, changing to diagnosis mode by ignition switch

operation is not possible.

• In diagnosis mode, when repair is complete and system is normal, the mode changes to user mode when

ignition switch is turned from OFF to ON.

PROCEDURE TO CHANGE DIAGNOSIS MODE

1.

Turn ignition switch from OFF to ON.

2.

SRS air bag lamp turns ON for 7 second and turns OFF, then turn ignition switch OFF within 1second after
the lamp turns OFF.

3.

After turning ignition switch OFF, wait for 3 seconds or more.

4.

Repeat operation 1 to 3 for 2 times so that operation 1 to 3 is repeated for 3times in total.

5.

Turn ignition switch from OFF to ON. Diagnosis mode changes.

USER MODE

In USER MODE, air bag warning lamp on combination meter blinks when a malfunction is detected and warns
the customer (driver).

How to Read Air Bag Warning Lamp

1.

Turn the ignition switch from OFF to ON, and check that the air bag warning lamp blinks.

2.

Compare the air bag warning lamp blinking pattern with the examples.

Air Bag Warning Lamp Examples

Diagnosis tool

User mode

Diagnosis mode

Air bag warning lamp

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CONSULT

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ON BOARD DIAGNOSTIC (OBD) SYSTEM

SRC-19

< SYSTEM DESCRIPTION >

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DIAGNOSIS MODE

The diagnosis mode can only be switched when a malfunction is detected in the user mode. Malfunctioning
system is indicated according to blinking pattern of air bag warning lamp.

How to Read Air Bag Warning Lamp

1.

Follow the procedures of “PROCEDURE TO CHANGE DIAGNOSIS MODE”, and switch to the diagnosis
mode.

2.

Turn ignition switch ON. Check the blinking pattern of air bag warning lamp.
There are 2 blinking patterns for the air bag warning lamp as per the following items. 
• Front air bag system: 3 second blink followed by a 0.5 second blink repeated.

Air bag warning lamp operation (user mode) 

SRS condition

Reference item

• No malfunction is detected
• No further action is necessary

—

• The system is malfunctioning
• Self diagnostic result is not erased af-

ter repair

Erase “Self Diagnostic Result” 
Refer to 

SRC-24, "CONSULT Func-

tion"

, How to Erase Self-diagnostic 

Result

Battery voltage is low (less than 9 V)

Check “Cause of Warning Lamp” 
with CONSULT.
Refer to 

SRC-24, "CONSULT Func-

tion"

Zero point reset is not completed

Go to 

SRC-9, "ZERO POINT RE-

SET : Description"

Intermittent malfunction is detected in 
the past

Go to 

GI-40, "Intermittent Incident"

• Air bag is deployed
• Seat belt pre-tensioner is deployed

Go to 

SRC-153, "Diagnosis Proce-

dure"

 or 

SRC-154, "Diagnosis Pro-

cedure"

• Air bag diagnosis sensor unit is mal-

functioning

• Air bag power supply circuit is mal-

functioning

• Air bag warning lamp circuit is mal-

functioning

Go to 

SRC-172, "Diagnosis Proce-

dure"

• Air bag diagnosis sensor unit is mal-

functioning

• Air bag warning lamp circuit is mal-

functioning

Go to 

SRC-173, "Diagnosis Proce-

dure"

SHIA0011E

SHIA0012E

SHIA0013E

SHIA0014E

SRC-20

< SYSTEM DESCRIPTION >

ON BOARD DIAGNOSTIC (OBD) SYSTEM

• Side air bag system: Two 1.5 second blinks followed by a 0.5 second blink repeated.

Front air bag system

Number of 0.5 second blinks

Malfunctioning items

Blinking pattern

0

• Self-diagnostic result is not erased after repair
• Intermittent malfunction is detected in the past

Refer to the following items
• Refer to How to Erase Self-di-

agnostic Result 

•

GI-40, "Intermittent Incident"

1

Seat belt pre-tensioner RH

Refer to the following items
•

SRC-76, "DTC Logic"

•

SRC-78, "DTC Logic"

•

SRC-80, "DTC Logic"

•

SRC-82, "DTC Logic"

2

Driver air bag module

Refer to the following items
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SRC-54, "DTC Logic"

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SRC-56, "DTC Logic"

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SRC-58, "DTC Logic"

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SRC-60, "DTC Logic"

•

SRC-74, "DTC Logic"

3

Seat belt pre-tensioner LH

Refer to the following items
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SRC-84, "DTC Logic"

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SRC-86, "DTC Logic"

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SRC-88, "DTC Logic"

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SRC-90, "DTC Logic"

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Occupant Detection System control unit

Refer to the following items
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SRC-32, "DTC Logic"

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SRC-34, "DTC Logic"

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SRC-36, "DTC Logic"

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SRC-40, "DTC Logic"

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Crash zone sensor

Refer to the following items
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SRC-44, "DTC Logic"

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SRC-46, "DTC Logic"

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SRC-48, "DTC Logic"

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SRC-50, "DTC Logic"

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Air bag diagnosis sensor unit

Refer to the following items
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SRC-26, "DTC Logic"

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SRC-28, "DTC Logic"

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SRC-30, "DTC Logic"

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SRC-42, "DTC Logic"

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SRC-52, "DTC Logic"

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SRC-62, "DTC Logic"

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SRC-72, "DTC Logic"

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SRC-92, "DTC Logic"

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SRC-94, "DTC Logic"

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SRC-108, "DTC Logic"

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SRC-126, "DTC Logic"

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SRC-145, "DTC Logic"

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SRC-147, "DTC Logic"

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SRC-149, "DTC Logic"

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SRC-151, "DTC Logic"

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SRC-160, "DTC Logic"

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SRC-162, "DTC Logic"

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Passenger air bag module

Refer to the following items
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SRC-64, "DTC Logic"

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SRC-66, "DTC Logic"

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SRC-68, "DTC Logic"

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SRC-70, "DTC Logic"

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Passenger air bag OFF indicator

Refer to 

SRC-38, "DTC Logic"

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Air bag diagnosis sensor unit

Refer to 

SRC-128, "DTC Logic"