Nissan Qashqai (2007-2010). Manual — part 764
SBC-4
< FUNCTION DIAGNOSIS >
SEAT BELT WARNING LAMP
FUNCTION DIAGNOSIS
SEAT BELT WARNING LAMP
System Diagram
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System Description
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Seat belt warning lamp will light up if the driver has started the engine or turned ignition switch to ON position.
DRIVER SIDE SEAT BELT WARNING LAMP OPEARATION
• Driver side seat belt warning lamp is built in combination meter.
• Warning lamp lights up if seat belt buckle switch is in OFF position (unbuckled).
• Warning lamp turns off if seat belt buckle switch is in ON position (buckled).
PASSENGER SIDE SEAT BELT WARNING LAMP OPERATION
• Passenger side seat belt warning lamp is located on center consol indicator unit.
• There is an occupant detection unit situated inside passenger seat. Note that passenger seat belt warning
lamp will not light up if the seat is unoccupied.
• If passenger seat is occupied and seat belt buckle is in OFF position warning lamp will light up.
• If passenger seat is occupied and seat belt buckle is in ON position warning lamp will turn off.
REAR SEAT BELT WARNING LAMP OPEATION
• Rear seat belt warning lamps are located on center consol indicator unit.
• Warning lamp lights up if seat belt buckle switch is in OFF position (unbuckled)
• Warning lamp turns off if seat belt buckle switch is in ON position (buckled).
• Regardless of rear seat belt status, warning lamp turns off approximately 35 seconds (the specified time)
after the engine has started.
JMHIA0232GB
SEAT BELT WARNING LAMP
SBC-5
< FUNCTION DIAGNOSIS >
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Component Parts Location
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Component Description
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JMHIA0231ZZ
1.
Seat belt warning lamp (built in com-
bination meter M34)
2.
Indicator unit M91
3.
Seat belt buckle switch (Driver side)
B22
4.
Occupant detection unit B48
A.
Behind seat cushion trim
Item
Function
Combination meter
• Driver seat belt warning lamp is built in combination meter.
• Detects the status of driver side passenger side seat belt buckle switch and controls warning
lamp operation.
Indicator unit
• Passenger side and rear seat belt warning lamps are built in indicator unit.
• Detects the status of rear seat belt buckle switch and controls the warning lamp illumination.
• Judges the status of engine by detection of the signal transmitted by alternator and performs
the control of seat belt warning lamp ON/OFF function.
Seat belt buckle switch
(driver/passenger/rear)
Detects seat belt feature status transmits signal to combination meter or to indicator unit.
SBC-6
< COMPONENT DIAGNOSIS >
INDICATOR UNIT POWER SUPPLY CIRCUIT
COMPONENT DIAGNOSIS
INDICATOR UNIT POWER SUPPLY CIRCUIT
Component Function Check
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1.
CHECK INDICATOR UNIT FUNCTION
1.
All seat belt buckle are unbuckle.
2.
Turn ignition switch ON.
3.
Check indicator unit operation.
Is the inspection results normal?
YES
>> Indicator unit power supply circuit is OK.
NO
>> Refer to
.
Diagnosis Procedure
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1.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect indicator unit connector.
3.
Check voltage between indicator unit connector and ground.
Is the inspection result normal?
YES
>> Refer to
GI-39, "Intermittent Incident"
.
NO
>> Repair or replace power supply circuit.
Terminals
Voltage(V)
(Approx.)
(+)
(-)
Indicator unit connector
Terminal
M91
7
Ground
Battery voltage
FRONT SEAT BELT BUCKLE SWITCH (DRIVER SIDE)
SBC-7
< COMPONENT DIAGNOSIS >
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FRONT SEAT BELT BUCKLE SWITCH (DRIVER SIDE)
Description
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• Detects if the seat belt is fastened or unfastened.
• Warning lamp turns OFF if the seat belt is fastened.
Component Function Check
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1.
CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE) FUNCTION
Check “SEAT BELT W/L” in DATA MONITOR mode with CONSULT-III
Is the inspection results normal?
YES
>> Seat belt buckle switch (driver side) function is OK.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000001083100
1.
CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE) FUNCTION
1.
Turn ignition switch ON.
2.
Check voltage between combination meter connector and ground.
Is the inspection result normal?
YES
>> Refer to
GI-39, "Intermittent Incident"
NO
>> GO TO 2.
2.
CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE) HARNESS
1.
Turn ignition switch OFF.
2.
Disconnect combination meter and seat belt buckle switch (driver side) connector.
3.
Check continuity between combination meter and seat belt buckle switch (driver side) harness connector.
4.
Check continuity between combination meter harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
CHECK GROUND CIRCUIT
Check continuity between seat belt buckle switch (driver side) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
Driver seat belt is unfastened
SEAT BELT W/L : ON
Driver seat belt is fastened
SEAT BELT W/L : OFF
Combination meter connector
Terminal
Condition
Voltage (V)
(Approx.)
M34
(+)
(-)
35
Ground
Driver seat belt is unfastened
0
Driver seat belt is fastened
5
Combination meter connector
Terminal
Seat belt buckle switch (driver side) connector
terminal
Continuity
M34
35
B22
1
Existed
Combination meter connector
Terminal
Ground
Continuity
M34
35
Not existed
Seat belt buckle switch (driver side) connector
Terminal
Ground
Continuity
B22
2
Existed
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