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Nissan Leaf. Manual - part 1103

DIAGNOSIS SYSTEM (AIR BAG)

SRC-13

< SYSTEM DESCRIPTION >

SRC

2. Turn ignition switch ON. Check the blinking pattern of air bag warning lamp.

There are 4 blinking patterns for the air bag warning lamp as per the following items.

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

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

• Air bag control unit system: 3 second blink followed by a 0.5 second blink repeated.

• Sensor system: Two 3 second blinks followed by a 0.5 second blink repeated.

Front air bag system

Side air bag system

Air bag control unit system

Sensor system

How to Erase Self-diagnostic Result

After a malfunction is repaired, turn the ignition switch OFF for one second or more, then turn ignition switch

ON. The diagnosis mode returns to the user mode. At that time the self-diagnostic result is cleared.

CONSULT Function

INFOID:0000000010122784

APPLICATION ITEM

CONSULT performs the following functions.

Number of 0.5 second blinks

Malfunctioning items

Driver air bag module

Passenger air bag module

Seat belt pre-tensioner LH

Seat belt pre-tensioner RH

Lap pre-tensioner LH

Number of 0.5-second blinks

Malfunctioning items

Side air bag module LH

Side air bag module RH

Curtain air bag module LH

Curtain air bag module RH

Number of 0.5 second blinks

Malfunctioning items

Collision detection

Air bag diagnosis sensor unit

Front passenger air bag indicator

Air bag cut OFF switch

Number of 0.5 second blinks

Malfunctioning items

Crash zone sensor

Satellite sensor LH

Satellite sensor RH

Other satellite sensor

Diagnosis mode

Description

Ecu Identification

Air bag diagnosis sensor unit ECU discriminated number (identification number) or part num-
ber is displayed. Air bag diagnosis sensor unit has individual ECU discriminated number
(identification number) or part number based on model and equipment.

Self Diagnostic Result

The current self diagnosis results (also indicated with the number of air bag warning lamp
blinks in the diagnosis mode) are displayed on CONSULT screen in real time. This refers to
a malfunctioning part requiring repairs.
Refer to

SRC-16, "DTC Index"

TROUBLE DIAG RECORD

With TROUBLE DIAG RECORD, diagnosis results previously erased by a reset operation
can be displayed on CONSULT screen.

SRC-14

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (AIR BAG)

CAUSE OF WARNING LAMP

The SRS air bag warning lamp blinks when the ignition voltage is a voltage value (9V or less, or 16 V or more)

at which the SRS air bag cannot operate normally. After blinking, if the ignition voltage returns to normal, SRS

air bag warning lamp turns OFF.DTC memory is not performed while the abnormal ignition voltage is detected.

The mode cannot be switched to trouble diagnosis mode when the ignition switch is operated.“No DTC” is dis-

played when checking “Self-diagnosis result” using CONSULT.

NOTE:

• SRS air bag warning may blink when the condition is out of detection area* of the satellite sensor in door.

The system is normal if SRS air bag warning lamp turns OFF after the condition returns within detection area

of the satellite sensor in door.

• SRS air bag warning lamp blinks when the zero point reset is incomplete after replacing the occupant detec-

tion system control unit. (SRS air bag warning lamp turns OFF after the zero point reset is complete.)

• *: Pressure inside of door is excessively low and air bag system cannot be operated normally (example: alti-

tude is approximately 4,000 m or more).

SELF-DIAG RESULT [CAN]

This item is displayed, but cannot be supported.

Cause of Warning Lamp

It displays the cause of warning lamp illumination that is not recorded in memory.

Diagnosis mode

Description

Display item

Display content

Actions by worker

IGN VOLT COND

The ignition voltage recognized by air bag system (air bag
control unit and occupant detection system control unit) is
displayed or a message stating that condition is out of de-
tection range of satellite sensor in door is displayed.
• OK: Normal
• LOW: The ignition voltage is low, high, or out of detec-

tion range of satellite sensor in door

Perform the check at an altitude of 4,000 m or
less.
• Check battery voltage if the ignition voltage

status is displayed as “LOW”.

• Check battery voltage if the ignition voltage

status is“OK” and the number of times detect-
ed is 1 or more. This is because an ignition
voltage error may be detected in the past.
NOTE:
If battery voltage is normal, the cause may be
that out of detection range of satellite sensor
in door is detected.

IGN VOLT TIME

Total number of times is displayed, summing up the num-
ber of times ignition voltage error is detected and the num-
ber of times that out of detection range of satellite sensor
in door is detected.
(Detection record is erased and counter returns to “0” by
“ERASE MEMORY” in “Self-diagnosis results” using CON-
SULT.)

LOW V RECORED

Number of times ignition switch ON is displayed after igni-
tion voltage error or out of detection range of satellite sen-
sor in door is detected.
(Detection record is erased and counter returns to “0” by
“ERASE MEMORY” in “Self-diagnosis results” using CON-
SULT.)

DIAGNOSIS SYSTEM (OCCUPANT DETECTION SYSTEM)

SRC-15

< SYSTEM DESCRIPTION >

SRC

DIAGNOSIS SYSTEM (OCCUPANT DETECTION SYSTEM)

CONSULT Function

INFOID:0000000010122785

ZERO POINT RESET DESCRIPTION

This vehicle adopts occupant detection system with a weight detecting method. When replacing, or removing

and installing passenger seat, always perform “Zero point reset” so that the vehicle recognizes zero point.

If zero point reset is incomplete, occupant detection seat sensor does not operate normally.

WORK SUPPORT

Monitor item

Description

Zero point reset function

Perform zero point reset. Refer to

SRC-37, "ZERO POINT RE-

SET : Special Repair Requirement"

SRC-16

< ECU DIAGNOSIS INFORMATION >

DIAGNOSIS SENSOR UNIT

ECU DIAGNOSIS INFORMATION

DIAGNOSIS SENSOR UNIT

DTC Index

INFOID:0000000010876195

DTC

Diagnostic item

Number of times of warning lamp

blinking in diagnosis mode

Reference page

System display

Item display

U1000–01

CAN COMM CIRCUIT

—

SRC-39, "Diag-
nosis Procedure"

U1010–49

CONTROL UNIT (CAN)

—

SRC-40, "Diag-
nosis Procedure"

B0001–00

DRIVER AIRBAG MODULE [SHORT]

Front air bag system

SRC-42, "Diag-
nosis Procedure"

B0001–09

DRIVER AIRBAG MODULE [SHORT]

B0001–11

DRIVER AIRBAG MODULE [GND-SHORT]

B0001–12

DRIVER AIRBAG MODULE [VB-SHORT]

B0001–13

DRIVER AIRBAG MODULE [OPEN]

B0001–1A

DRIVER AIRBAG MODULE [SHORT]

B0002–00

DRIVER AIRBAG MODULE 2 [SHORT]

Front air bag system

SRC-46, "Diag-
nosis Procedure"

B0002–09

DRIVER AIRBAG MODULE 2 [SHORT]

B0002–11

DRIVER AIRBAG MODULE 2 [GND-SHORT]

B0002–12

DRIVER AIRBAG MODULE 2 [VB-SHORT]

B0002–13

DRIVER AIRBAG MODULE 2 [OPEN]

B0002–1A

DRIVER AIRBAG MODULE 2 [SHORT]

B0010–09

ASSIST A/B MODULE [SHORT]

Front air bag system

SRC-50, "Diag-
nosis Procedure"

B0010–11

ASSIST A/B MODULE [GND-SHORT]

B0010–12

ASSIST A/B MODULE [VB-SHORT]

B0010–13

ASSIST A/B MODULE [OPEN]

B0010–1A

ASSIST A/B MODULE [SHORT]

B0011–09

ASSIST A/B MODULE 2 [SHORT]

Front air bag system

SRC-53, "Diag-
nosis Procedure"

B0011–11

ASSIST A/B MODULE 2 [GND-SHORT]

B0011–12

ASSIST A/B MODULE 2 [VB-SHORT]

B0011–13

ASSIST A/B MODULE 2 [OPEN]

B0011–1A

ASSIST A/B MODULE 2 [SHORT]

B0020–09

SIDE A/B MODULE LH [SHORT]

Side air bag system

SRC-56, "Diag-
nosis Procedure"

B0020–11

SIDE A/B MODULE LH [GND-SHORT]

B0020–12

SIDE A/B MODULE LH [VB-SHORT]

B0020–13

SIDE A/B MODULE LH [OPEN]

B0020–1A

SIDE A/B MODULE LH [SHORT]

B0021–09

CURTAIN A/B MODULE LH [SHORT]

Side air bag system

SRC-59, "Diag-
nosis Procedure"

B0021–11

CURTAIN A/B MODULE LH [GND-SHORT]

B0021–12

CURTAIN A/B MODULE LH [VB-SHORT]

B0021–13

CURTAIN A/B MODULE LH [OPEN]

B0021–1A

CURTAIN A/B MODULE LH [SHORT]

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