Nissan Leaf. Manual — part 1100
SRC-1
RESTRAINTS
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SECTION
SRC
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B
SRC
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CONTENTS
SRS AIRBAG CONTROL SYSTEM
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
Precaution for Technicians Using Medical Electric
. ..
Point to Be Checked Before Starting Maintenance
Work . . . . . . . . . . . . . . . . . . ..
Service . . . . . . . . . . . . . . . . . ..
Precaution for Removing 12V Battery . . . . . ...
SYSTEM DESCRIPTION . . . . . . . ..
COMPONENT PARTS . . . . . . . . . .
Component Parts Location . . . . . . . . . ....
SYSTEM . . . . . . . . . . . . . . . ..
System Description . . . . . . . . . . . . ...
DIAGNOSIS SYSTEM (AIR BAG) . . . . . .
Description . . . . . . . . . . . . . . . ..
On Board Diagnosis Function . . . . . . . . .
CONSULT Function . . . . . . . . . . . .
DIAGNOSIS SYSTEM (OCCUPANT DETEC-
TION SYSTEM) . . . . . . . . . . . . ..
CONSULT Function . . . . . . . . . . . .
ECU DIAGNOSIS INFORMATION . . . ..
DIAGNOSIS SENSOR UNIT . . . . . . . ..
DTC Index . . . . . . . . . . . . . . . ..
Flash Code Index . . . . . . . . . . . . .
WIRING DIAGRAM . . . . . . . . . ..
SRS AIR BAG SYSTEM . . . . . . . . . .
Wiring Diagram . . . . . . . . . . . . . ...
BASIC INSPECTION . . . . . . . . ...
DIAGNOSIS AND REPAIR WORK FLOW . .
Work Flow . . . . . . . . . . . . . . . .
INSPECTION AND ADJUSTMENT . . . . ..
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT . . . . . . . . . . . . . .
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Description . . . . . . . . .
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement . ..
ZERO POINT RESET . . . . . . . . . . . . .
ZERO POINT RESET : Description . . . . . . .
ZERO POINT RESET : Special Repair Require-
ment . . . . . . . . . . . . . . . . . . .
INTERMITTENT INCIDENT . . . . . . . ..
Inspection Procedure . . . . . . . . . . . ..
DTC/CIRCUIT DIAGNOSIS . . . . . . .
U1000 CAN COMM CIRCUIT . . . . . . ...
DTC Description . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
U1010 CONTROL UNIT (CAN) . . . . . . .
DTC Description . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
B0001 DRIVER AIR BAG MODULE . . . . .
DTC Description . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
B0002 DRIVER AIR BAG MODULE . . . . .
DTC Description . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
B0010 PASSENGER AIR BAG MODULE . .
Description . . . . . . . . . . . . . . . ...
DTC Description . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
SRC-2
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
B0020 SIDE AIRBAG MODULE LH . . . . ..
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
B0021 SIDE CURTAIN AIR BAG MODULE LH
...
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
B0028 SIDE AIRBAG MODULE RH . . . . .
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
B0029 SIDE CURTAIN AIR BAG MODULE
RH . . . . . . . . . . . . . . . . . ..
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
B0091 FRONT SIDE AIR BAG SATELLITE
SENSOR LH . . . . . . . . . . . . . ..
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
B0093 FRONT DOOR SATELLITE SENSOR
LH . . . . . . . . . . . . . . . . . ...
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
B0094 CRASH ZONE SENSOR . . . . . .
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
B0096 FRONT SIDE AIR BAG SATELLITE
SENSOR RH . . . . . . . . . . . . . ..
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
B0098 FRONT DOOR SATELLITE SENSOR
RH . . . . . . . . . . . . . . . . . ..
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
B00A0 OCCUPANT CLASSIFICATION SYS-
TEM CONTROL UNIT . . . . . . . . . .
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
B00D5 FRONT PASSENGER AIR BAG OFF
INDICATOR . . . . . . . . . . . . . ...
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
B1428 SEAT BELT BUCKLE SWITCH LH . ...
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
B1429 SEAT BELT BUCKLE SWITCH RH . ..
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1430, B1432 SEAT BELT PRE-TENSIONER
LH . . . . . . . . . . . . . . . . . ..
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
B1431 SEAT BELT PRE-TENSIONER . . . .
Description . . . . . . . . . . . . . . . ..
DTC Description . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
B142A IGN VOLTAGE . . . . . . . . . .
Description . . . . . . . . . . . . . . .
DTC Description . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B142X COLLISION DETECTION . . . . . .
Description . . . . . . . . . . . . . . .
DTC Description . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B14XX AIR BAG DIAGNOSIS SENSOR UNIT ..
Description . . . . . . . . . . . . . . .
DTC Description . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
SYMPTOM DIAGNOSIS . . . . . . ...
SRS AIR BAG WARNING LAMP DOES NOT
TURN OFF . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
SRS AIR BAG WARNING LAMP DOES NOT
TURN ON . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
SRS AIR BAG WARNING LAMP BLINKS . ..
PRECAUTIONS
SRC-3
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Technicians Using Medical Electric
INFOID:0000000010122775
OPERATION PROHIBITION
WARNING:
• Parts with strong magnet is used in this vehicle.
• Technicians using a medical electric device such as pacemaker must never perform operation on the
vehicle, as magnetic field can affect the device function by approaching to such parts.
NORMAL CHARGE PRECAUTION
WARNING:
• If a technician uses a medical electric device such as an implantable cardiac pacemaker or an
implantable cardioverter defibrillator, the possible effects on the devices must be checked with the
device manufacturer before starting the charge operation.
• As radiated electromagnetic wave generated by PDM (Power Delivery Module) at normal charge
operation may affect medical electric devices, a technician using a medical electric device such as
implantable cardiac pacemaker or an implantable cardioverter defibrillator must not approach motor
room [PDM (Power Delivery Module)] at the hood-opened condition during normal charge operation.
PRECAUTION AT TELEMATICS SYSTEM OPERATION
WARNING:
• If a technician uses implantable cardiac pacemaker or implantable cardioverter defibrillator (ICD),
avoid the device implanted part from approaching within approximately 220 mm (8.66 in) from inte-
rior/exterior antenna.
• The electromagnetic wave of TCU might affect the function of the implantable cardiac pacemaker or
the implantable cardioverter defibrillator (ICD), when using the service, etc.
• If a technician uses other medical electric devices than implantable cardiac pacemaker or implant-
able cardioverter defibrillator (ICD), the electromagnetic wave of TCU might affect the function of the
device. The possible effects on the devices must be checked with the device manufacturer before
TCU use.
PRECAUTION AT INTELLIGENT KEY SYSTEM OPERATION
WARNING:
• If a technician uses implantable cardiac pacemaker or implantable cardioverter defibrillator (ICD),
avoid the device implanted part from approaching within approximately 220 mm (8.66 in) from inte-
rior/exterior antenna.
• The electromagnetic wave of intelligent key might affect the function of the implantable cardiac
pacemaker or the implantable cardioverter defibrillator (ICD), at door operation, at each request
switch operation, or at engine starting.
• If a technician uses other medical electric devices than implantable cardiac pacemaker or implant-
able cardioverter defibrillator (ICD), the electromagnetic wave of intelligent key might affect the func-
tion of the device. The possible effects on the devices must be checked with the device
manufacturer before intelligent key use.
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000010508806
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. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
SRC-4
< PRECAUTION >
PRECAUTIONS
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which 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 the SR section.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT 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 three minutes before performing any service.
Point to Be Checked Before Starting Maintenance Work
INFOID:0000000010122777
The high voltage system may starts automatically. It is required to check that the timer air conditioner
and timer charge (during EVSE connection) are not set before starting maintenance work.
NOTE:
If the timer air conditioner or timer charge (during EVSE connection) is set, the high voltage system starts
automatically even when the power switch is in OFF state.
Service
INFOID:0000000010122778
• Never use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
• Before servicing the SRS, turn power switch OFF, disconnect 12V battery negative terminal and wait 3 min-
utes or more.Refer to
SRC-4, "Precaution for Removing 12V Battery"
For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-
tensioner to deploy. Therefore, never work on any SRS connectors or wires until at least 3 minutes have
passed.
• Diagnosis sensor unit must always be installed with their arrow marks “
⇐” pointing towards the front of the
vehicle for proper operation. Also check diagnosis sensor unit for cracks, deformities or rust before installa-
tion and replace as required.
• The spiral cable must be aligned with the neutral position since its rotations are limited. Never turn steering
wheel and column after removal of steering gear.
• Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad side
facing upward and seat mounted front side air bag module standing with the stud bolt side facing down.
• Conduct self-diagnosis to check entire SRS for proper function after replacing any components.
• After air bag inflates, the front instrument panel assembly should be replaced if damaged.
• Always replace instrument panel pad following front passenger air bag deployment.
• Never solder the harness when making repairs. Check that harness is not pinched and that there is no con-
tact with other components.
• Never allow harness to come in contact with oil, grease, waste oil, or water.
• Never insert foreign materials, such as a screwdriver, into the harness connector. (This is to prevent acci-
dental activation caused by static electricity.)
• Always use CONSULT or SRS air bag warning lamp to perform the circuit diagnosis. (Never use an electric
tester such as a circuit tester.)
Precaution for Removing 12V Battery
INFOID:0000000010122779
1. Check that EVSE is not connected.
NOTE:
If EVSE is connected, the air conditioning system may be automatically activated by the timer A/C func-
tion.
2. Turn the power switch OFF
→ ON → OFF. Get out of the vehicle. Close all doors (including back door).
3. Check that the charge status indicator lamp does not blink and wait for 5 minutes or more.
NOTE:
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