Qashqai J11. SRS Airbag control system - part 6

B142A IGN VOLTAGE

SRC-81

< DTC/CIRCUIT DIAGNOSIS >

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B142A IGN VOLTAGE

DTC Description

INFOID:0000000010431070

DTC DETECTION LOGIC

POSSIBLE CAUSE

[B142A–16]

• Malfunction of battery voltage (less than 9 V)
• Connection malfunction of harness or connector 
• Internal malfunction of air bag diagnosis sensor unit

[B142A–17]

• Malfunction of battery voltage (more than 16 V)
• Connection malfunction of harness or connector 
• Internal malfunction of air bag diagnosis sensor unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAG RESULT

 With CONSULT

1.

Turn ignition switch ON.

2.

Perform “Self Diagnostic Result” mode of “AIR BAG” using CONSULT.

Is malfunctioning part detected?

YES

>> Refer to 

SRC-81, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-41, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010431071

WARNING:

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait at least 3

minutes or more. (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device. 

1.

CHECK BATTERY VOLTAGE

Check battery voltage. Refer to 

PG-136, "FOR MAINTENANCE REQUIRED BATTERY MODELS : How to

Handle Battery"

 (For maintenance required battery) or 

PG-142, "FOR MAINTENANCE FREE BATTERY

MODELS : How to Handle Battery"

 (For maintenance free battery).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace battery. Refer to 

PG-155, "Removal and Installation"

.

2.

CHECK HARNESS CONNECTOR

Check the harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace harness connectors.

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B142A–16

IGNITION VOLTAGE
(Ignition voltage Low)

Power supply malfunction (low voltage) of air bag diagnosis sensor unit

B142A–17

IGNITION VOLTAGE
(Ignition voltage High)

Power supply malfunction (high voltage) of air bag diagnosis sensor 
unit

SRC-82

< DTC/CIRCUIT DIAGNOSIS >

B142A IGN VOLTAGE

3.

CHECK WIRING HARNESS

Check the wiring harness externals.
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace wiring harness.

4.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-28, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-81, "DTC Description"

.

Is DTC detected?

YES

>>  GO TO 1.

NO

>> INSPECTION END

B1430 SEAT BELT PRE-TENSIONER

SRC-83

< DTC/CIRCUIT DIAGNOSIS >

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B1430 SEAT BELT PRE-TENSIONER

DTC Description

INFOID:0000000010431072

DTC DETECTION LOGIC

POSSIBLE CAUSE

[B1430–09, B1430–1A]

• Connection malfunction or short circuit of harness and connector
• Internal malfunction of seat belt pre-tensioner LH
• Internal malfunction of air bag diagnosis sensor unit

[B1430–11]

• Connection malfunction or short circuit to ground of harness and connector
• Internal malfunction of seat belt pre-tensioner LH
• Internal malfunction of air bag diagnosis sensor unit

[B1430–12]

• Connection malfunction or short circuit to power supply of harness and connector
• Internal malfunction of seat belt pre-tensioner LH
• Internal malfunction of air bag diagnosis sensor unit

[B1430–13]

• Connection malfunction or open circuit of harness and connector
• Internal malfunction of seat belt pre-tensioner LH
• Internal malfunction of air bag diagnosis sensor unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAG RESULT

 With CONSULT

1.

Turn ignition switch ON.

2.

Perform “Self Diagnostic Result” mode of “AIR BAG” using CONSULT.

Is malfunctioning part detected?

YES

>> Refer to 

SRC-84, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-41, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B1430–09

PRE-TEN FRONT LH
[front seat belt pre-tensioner squib left hand 
component failures (cross connection)]

Seat belt pre-tensioner LH circuits are shorted to each other

B1430–11

PRE-TEN FRONT LH
(front seat belt pre-tensioner squib left hand 
circuit short to GND)

Seat belt pre-tensioner LH circuit is shorted to ground

B1430–12

PRE-TEN FRONT LH
(front seat belt pre-tensioner squib left hand 
circuit short to battery)

Seat belt pre-tensioner LH circuit is shorted to power supply circuit

B1430–13

PRE-TEN FRONT LH
(front seat belt pre-tensioner squib left hand 
circuit)

Seat belt pre-tensioner LH circuit is open

B1430–1A

PRE-TEN FRONT LH
(front seat belt pre-tensioner squib left hand 
circuit resistance below threshold)

Seat belt pre-tensioner LH circuits are shorted to each other

SRC-84

< DTC/CIRCUIT DIAGNOSIS >

B1430 SEAT BELT PRE-TENSIONER

Diagnosis Procedure

INFOID:0000000010431073

WARNING:

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait at least 3

minutes or more. (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1.

CHECK HARNESS CONNECTOR

Check the harness connector.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace harness connector.

2.

CHECK WIRING HARNESS

Check the wiring harness externals.
Is the inspection result normal?

YES

>> GO TO 3. 

NO

>> Replace wiring harness.

3.

REPLACE SEAT BELT PRE-TENSIONER LH

1.

Replace seat belt pre-tensioner LH. Refer to 

SB-7, "SEAT BELT RETRACTOR : Removal and Installa-

tion"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-83, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 4. 

NO

>> INSPECTION END

4.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT 

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-28, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-83, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 1. 

NO

>> INSPECTION END

B1431 SEAT BELT PRE-TENSIONER

SRC-85

< DTC/CIRCUIT DIAGNOSIS >

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B1431 SEAT BELT PRE-TENSIONER

DTC Description

INFOID:0000000010431074

DTC DETECTION LOGIC

POSSIBLE CAUSE

[B1431–09, B1431–1A]

• Connection malfunction or short circuit of harness and connector
• Internal malfunction of seat belt pre-tensioner RH
• Internal malfunction of air bag diagnosis sensor unit

[B1431–11]

• Connection malfunction or short circuit to ground of harness and connector
• Internal malfunction of seat belt pre-tensioner RH
• Internal malfunction of air bag diagnosis sensor unit

[B1431–12]

• Connection malfunction or short circuit to power supply of harness and connector
• Internal malfunction of seat belt pre-tensioner RH
• Internal malfunction of air bag diagnosis sensor unit

[B1431–13]

• Connection malfunction or open circuit of harness and connector
• Internal malfunction of seat belt pre-tensioner RH
• Internal malfunction of air bag diagnosis sensor unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAG RESULT

 With CONSULT

1.

Turn ignition switch ON.

2.

Perform “Self Diagnostic Result” mode of “AIR BAG” using CONSULT.

Is malfunctioning part detected?

YES

>> Refer to 

SRC-86, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-41, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B1431–09

PRE-TEN FRONT RH 
[front seat belt pre-tensioner squib right hand 
component failures (cross connection)]

Seat belt pre-tensioner RH circuits are shorted to each other

B1431–11

PRE-TEN FRONT RH 
(front seat belt pre-tensioner squib right hand 
circuit short to GND)

Seat belt pre-tensioner RH circuit is shorted to ground

B1431–12

PRE-TEN FRONT RH 
(front seat belt pre-tensioner squib right hand 
circuit short to battery)

Seat belt pre-tensioner RH circuit is shorted to power supply circuit

B1431–13

PRE-TEN FRONT RH 
(front seat belt pre-tensioner squib right hand 
circuit)

Seat belt pre-tensioner RH circuit is open

B1431–1A

PRE-TEN FRONT RH 
(front seat belt pre-tensioner squib right hand 
circuit resistance below threshold)

Seat belt pre-tensioner RH circuits are shorted to each other

SRC-86

< DTC/CIRCUIT DIAGNOSIS >

B1431 SEAT BELT PRE-TENSIONER

Diagnosis Procedure

INFOID:0000000010431075

WARNING:

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait at least 3

minutes or more. (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device. 

1.

CHECK HARNESS CONNECTOR

Check the harness connector.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace harness connector.

2.

CHECK WIRING HARNESS

Check the wiring harness externals.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace wiring harness.

3.

REPLACE SEAT BELT PRE-TENSIONER RH

1.

Replace seat belt pre-tensioner RH. Refer to 

SB-7, "SEAT BELT RETRACTOR : Removal and Installa-

tion"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-85, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 4.

NO

>> INSPECTION END

4.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT 

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-28, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-85, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 1.

NO

>> INSPECTION END

B1432 LAP PRE-TENSIONER

SRC-87

< DTC/CIRCUIT DIAGNOSIS >

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B1432 LAP PRE-TENSIONER

DTC Description

INFOID:0000000010431076

POSSIBLE CAUSE

[B1432–09, B1432–30]

• Connection malfunction or short circuit of harness and connector
• Internal malfunction of lap pre-tensioner LH
• Internal malfunction of air bag diagnosis sensor unit

[B1432–11]

• Connection malfunction or short circuit to ground of harness and connector
• Internal malfunction of lap pre-tensioner LH
• Internal malfunction of air bag diagnosis sensor unit

[B1432–12]

• Connection malfunction or short circuit to power supply of harness and connector
• Internal malfunction of lap pre-tensioner LH
• Internal malfunction of air bag diagnosis sensor unit

[B1432–13]

• Connection malfunction or open circuit of harness and connector
• Internal malfunction of lap pre-tensioner LH
• Internal malfunction of air bag diagnosis sensor unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSTIC RESULT

 With CONSULT

1.

Turn ignition switch ON.

2.

Perform “Self Diagnostic Result” mode of “AIR BAG” using CONSULT.

Is malfunctioning part detected?

YES

>> Refer to 

SRC-87, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-41, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010431077

WARNING:

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B1432–09

PRE-TEN FRONT LH 2
[front lap seat belt pre-tensioner squib left 
hand component failures (cross connection)]

Lap pre-tensioner LH circuits are shorted to each other

B1432–11

PRE-TEN FRONT LH 2
(front lap seat belt pre-tensioner squib left 
hand circuit short to GND)

Lap pre-tensioner LH circuit is shorted to ground

B1432–12

PRE-TEN FRONT LH 2
(front lap seat belt pre-tensioner squib left 
hand circuit short to battery)

Lap pre-tensioner LH circuit is shorted to power supply circuit

B1432–13

PRE-TEN FRONT LH 2
(front lap seat belt pre-tensioner squib left 
hand circuit)

Lap pre-tensioner LH circuit is open

B1432–1A

PRE-TEN FRONT LH 2
(front lap seat belt pre-tensioner squib left 
hand circuit resistance below threshold)

Lap pre-tensioner LH circuits are shorted to each other

SRC-88

< DTC/CIRCUIT DIAGNOSIS >

B1432 LAP PRE-TENSIONER

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3

minutes. (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1.

CHECK HARNESS CONNECTOR

Check the harness connector.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace harness connector.

2.

CHECK WIRING HARNESS

Check the wiring harness externals.

Is the inspection result normal?

YES

>> GO TO 3. 

NO

>> Replace wiring harness.

3.

REPLACE LAP PRE-TENSIONER LH

1.

Replace lap pre-tensioner LH. Refer to 

SB-7, "SEAT BELT RETRACTOR : Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-87, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 4. 

NO

>> INSPECTION END

4.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT 

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-28, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-87, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 1. 

NO

>> INSPECTION END

B1433 LAP PRE-TENSIONER

SRC-89

< DTC/CIRCUIT DIAGNOSIS >

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B1433 LAP PRE-TENSIONER

DTC Description

INFOID:0000000010431078

POSSIBLE CAUSE

[B1433–09, B1433–1A]

• Connection malfunction or short circuit of harness and connector
• Internal malfunction of lap pre-tensioner RH
• Internal malfunction of air bag diagnosis sensor unit

[B1433–11]

• Connection malfunction or short circuit to ground of harness and connector
• Internal malfunction of lap pre-tensioner RH
• Internal malfunction of air bag diagnosis sensor unit

[B1433–12]

• Connection malfunction or short circuit to power supply of harness and connector
• Internal malfunction of lap pre-tensioner RH
• Internal malfunction of air bag diagnosis sensor unit

[B1433–13]

• Connection malfunction or open circuit of harness and connector
• Internal malfunction of lap pre-tensioner RH
• Internal malfunction of air bag diagnosis sensor unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSTIC RESULT

 With CONSULT

1.

Turn ignition switch ON.

2.

Perform “Self Diagnostic Result” mode of “AIR BAG” using CONSULT.

Is malfunctioning part detected?

YES

>> Refer to 

SRC-89, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-41, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010431079

WARNING:

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B1433–09

PRE-TEN FRONT RH 2
[front lap seat belt pre-tensioner squib right 
hand component failures (cross connection)]

Lap pre-tensioner RH circuits are shorted to each other

B1433–11

PRE-TEN FRONT RH 2
(front lap seat belt pre-tensioner squib right 
hand circuit short to GND)

Lap pre-tensioner RH circuit is shorted to ground

B1433–12

PRE-TEN FRONT RH 2
(front lap seat belt pre-tensioner squib right 
hand circuit short to battery)

Lap pre-tensioner RH circuit is shorted to power supply circuit

B1433–13

PRE-TEN FRONT RH 2
(front lap seat belt pre-tensioner squib right 
hand circuit)

Lap pre-tensioner RH circuit is open

B1433–1A

PRE-TEN FRONT RH 2
(front lap seat belt pre-tensioner squib right 
hand circuit resistance below threshold)

Lap pre-tensioner RH circuits are shorted to each other

SRC-90

< DTC/CIRCUIT DIAGNOSIS >

B1433 LAP PRE-TENSIONER

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3

minutes. (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1.

CHECK HARNESS CONNECTOR

Check the harness connector.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace harness connector.

2.

CHECK WIRING HARNESS

Check the wiring harness externals.

Is the inspection result normal?

YES

>> GO TO 3. 

NO

>> Replace wiring harness.

3.

REPLACE LAP PRE-TENSIONER RH

1.

Replace lap pre-tensioner RH. Refer to 

SB-7, "SEAT BELT RETRACTOR : Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-89, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 4. 

NO

>> INSPECTION END

4.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT 

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-28, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-89, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 1. 

NO

>> INSPECTION END

SRS AIR BAG WARNING LAMP DOES NOT TURN OFF

SRC-91

< SYMPTOM DIAGNOSIS >

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SYMPTOM DIAGNOSIS

SRS AIR BAG WARNING LAMP DOES NOT TURN OFF

Diagnosis Procedure

INFOID:0000000010377880

1.

CHECK 12V BATTERY

Check 12V battery. Refer to 

PG-136, "FOR MAINTENANCE REQUIRED BATTERY MODELS : How to Han-

dle Battery"

 (For maintenance required battery) or 

PG-142, "FOR MAINTENANCE FREE BATTERY MODELS

: How to Handle Battery"

 (For maintenance free battery).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts. 

2.

CHECK DTC WITH AIR BAG DIAGNOSIS SENSOR UNIT

Check that DTC is not detected with air bag diagnosis sensor unit.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Refer to 

SRC-19, "DTC Index"

.

3.

CHECK COMBINATION METER POWER SUPPLY AND GROUND CIRCUIT

Check combination meter unit power supply and ground circuit. Refer to 

MWI-61, "COMBINATION METER :

Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace the malfunctioning parts. 

4.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-28, "Removal and Installation"

.

2.

Check air bag warning lamp operation.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 5.

5.

REPLACE COMBINATION METER

1.

Replace combination meter. Refer to 

MWI-80, "Removal and Installation"

.

2.

Check air bag warning lamp operation.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

SRC-92

< SYMPTOM DIAGNOSIS >

SRS AIR BAG WARNING LAMP DOES NOT TURN ON

SRS AIR BAG WARNING LAMP DOES NOT TURN ON

Diagnosis Procedure

INFOID:0000000010377881

1.

CHECK DTC WITH AIR BAG DIAGNOSIS SENSOR UNIT AND COMBINATION METER

Check that DTC is not detected with air bag diagnosis sensor unit and combination meter.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Refer to 

SRC-19, "DTC Index"

 (air bag diagnosis sensor unit) and 

MWI-39, "DTC Index"

 (combi-

nation meter).

2.

CHECK COMBINATION METER POWER SUPPLY AND GROUND CIRCUIT

Check combination meter unit power supply and ground circuit. Refer to 

MWI-61, "COMBINATION METER :

Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace the malfunctioning parts. 

3.

CHECK AIR BAG FUSE

Check 10 A fuse [No. 2, located in fuse block (J/B)].

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace the fuse.

4.

CHECK HARNESS CONNECTOR

Check the harness connector.
Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace harness connectors.

5.

CHECK WIRING HARNESS

Check the wiring harness externals.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace wiring harness.

6.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-28, "Removal and Installation"

.

2.

Check air bag warning lamp operation.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 7.

7.

REPLACE COMBINATION METER

1.

Replace combination meter. Refer to 

MWI-80, "Removal and Installation"

.

2.

Check air bag warning lamp operation.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.