Qashqai J11. SRS Airbag control system - part 3

SRS AIR BAG SYSTEM

SRC-33

< WIRING DIAGRAM >

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JRHWC1583GB

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SRS AIR BAG SYSTEM

JRHWC1584GB

DIAGNOSIS AND REPAIR WORK FLOW

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< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow

INFOID:0000000010431027

OVERALL SEQUENCE

DETAILED FLOW

JMHIA2620GB

SRC-36

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORK FLOW

1.

GET INFORMATION FOR SYMPTOM

1.

Get detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurs).

2.

Check operation condition of the function that is malfunctioning.

>> GO TO 2.

2.

CHECK DTC

1.

Check DTC.

2.

Perform the following procedure if DTC is detected.

-

Record DTC (Print them out using CONSULT).

-

Erase DTC.

-

Study the relationship between the cause detected by DTC and the symptom described by the customer.

3.

Check related service bulletins for information.

Are any symptoms described and any DTC detected?

Symptom is described, DTC is detected>>GO TO 3.
Symptom is described, DTC is not detected>>GO TO 4.
Symptom is not described, DTC is detected>>GO TO 5.

3.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 5.

4.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 6.

5.

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC CONFIRMATION PROCEDURE for the detected DTC, and then check that DTC is detected
again.

Is DTC detected?

YES

>> GO TO 7.

NO

>> Check according to 

GI-41, "Intermittent Incident"

.

6.

DETECT MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS

Detect malfunctioning system according to SYMPTOM DIAGNOSIS based on the confirmed symptom in step
4, and determine the trouble diagnosis order based on possible causes and symptom.

>> GO TO 7.

7.

DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE

Inspect according to Diagnosis Procedure of the system.

Is malfunctioning part detected?

YES

>> GO TO 8.

NO

>> Check according to 

GI-41, "Intermittent Incident"

.

8.

REPAIR OR REPLACE THE MALFUNCTIONING PART

1.

Repair or replace the malfunctioning part.

2.

Reconnect parts or connectors disconnected during Diagnosis Procedure again after repair and replace-
ment.

3.

Check DTC. If DTC is detected, erase it.

DIAGNOSIS AND REPAIR WORK FLOW

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>> GO TO 9.

9.

FINAL CHECK

When DTC is detected in step 2, perform DTC CONFIRMATION PROCEDURE again, and then check that the
malfunction is repaired securely.
When symptom is described by the customer, refer to confirmed symptom in step 3 or 4, and check that the
symptom is not detected.

Is DTC detected and does symptom remain?

YES-1 >> DTC is detected: GO TO 7.
YES-2 >> Symptom remains: GO TO 4.
NO

>> Before returning the vehicle to the customer, always erase DTC.

SRC-38

< BASIC INSPECTION >

ADDITIONAL SERVICE WHEN REPLACING AIR BAG DIAGNOSIS SENSOR 

UNIT

ADDITIONAL SERVICE WHEN REPLACING AIR BAG DIAGNOSIS SEN-
SOR UNIT

Description

INFOID:0000000010431028

BEFORE REPLACEMENT

When replacing air bag diagnosis sensor unit, save or print current vehicle specification with CONSULT con-
figuration before replacement.
NOTE:
If “Before Replace ECU” of “Read / Write Configuration” cannot be used, use the “Manual Configuration” after
replacing air bag diagnosis sensor unit.

AFTER REPLACEMENT

CAUTION:

Follow the instructions listed below. Failure to do this may cause malfunctions to the air bag diagno-
sis sensor unit.
• Never perform “Read / Write Configuration” or “Manual Configuration” except for new air bag diag-

nosis sensor unit. 

• When replacing air bag diagnosis sensor unit, you must perform “Read / Write Configuration” or

“Manual Configuration” with CONSULT.

• Complete the procedure of “Read / Write Configuration” or “Manual Configuration” in order.
• If you set incorrect “Read / Write Configuration” or “Manual Configuration”, incidents might occur.
• Configuration is different for each vehicle model. Confirm configuration of each vehicle model.

Work Procedure

INFOID:0000000010431029

1.

SAVING VEHICLE SPECIFICATION

CONSULT Configuration

Perform “Before Replace ECU” of “Read / Write Configuration” to save or print current vehicle specification.
NOTE:
If “Before Replace ECU” of “Read / Write Configuration” cannot be used, use the “Manual Configuration” after
replacing air bag diagnosis sensor unit.

>> GO TO 2.

2.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

Replace air bag diagnosis sensor unit. Refer to 

SR-28, "Removal and Installation"

.

>> GO TO 3.

3.

WRITING VEHICLE SPECIFICATION

CONSULT Configuration

Perform “After Replace ECU” of “Read / Write Configuration” or “Manual Configuration” to write vehicle speci-
fication. Refer to 

SRC-39, "Work Procedure"

.

>> WORK END

CONFIGURATION (AIR BAG DIAGNOSIS SENSOR UNIT)

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CONFIGURATION (AIR BAG DIAGNOSIS SENSOR UNIT)

Work Procedure

INFOID:0000000010431030

1.

WRITING MODE SELECTION

CONSULT Configuration

Select “Re/programming, Configuration” of air bag.

When writing saved data>>GO TO 2.
When writing manually>>GO TO 3.

2.

PERFORM “AFTER REPLACE ECU” OF “READ / WRITE CONFIGURATION”

CONSULT Configuration

Perform “After Replace ECU” of “Read / Write Configuration”.

>> GO TO 4.

3.

PERFORM “MANUAL CONFIGURATION”

CONSULT Configuration

1.

Select “Manual Configuration”.

2.

Touch “Next”.

3.

Select the “Type ID” searched by using FAST (service parts catalogue) to write the “Type ID” into the air
bag diagnosis sensor unit.

4.

Touch “OK”.

5.

Check that the configuration has been successfully written and touch “End”.

>> GO TO 4.

4.

CHECK ALL ECU SELF-DIAGNOSIS RESULTS

1.

Erase all ECU self-diagnosis results using CONSULT.

2.

Turn the ignition switch OFF.

3.

Turn the ignition switch ON.

4.

Check that all ECU self-diagnosis results have no DTC.

>> WORK END

SRC-40

< DTC/CIRCUIT DIAGNOSIS >

U1000 CAN COMM CIRCUIT

DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000010377825

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN H-line, CAN L-line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to 

LAN-39, "CAN COMMUNICATION SYSTEM : CAN System Spec-

ification Chart"

.

DTC Logic

INFOID:0000000010377826

DTC DETECTION LOGIC

POSSIBLE CAUSE

CAN communication system

FAIL-SAFE

—

Diagnosis Procedure

INFOID:0000000010377827

1.

PERFORM SELF DIAGNOSTIC

1.

Turn ignition switch ON and wait for 2 seconds or more.

2.

Check “SELF-DIAG RESULT [CAN]”.

Is DTC “U1000–01” displayed?

YES

>> Refer to 

LAN-24, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to 

GI-41, "Intermittent Incident"

.

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC Detection Condition

U1000–01

CAN COMM CIRCUIT
(CAN communication circuit)

When air bag diagnosis sensor unit cannot communicate CAN commu-
nication signal continuously for 2 seconds or more.

U1010 CONTROL UNIT (CAN)

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< DTC/CIRCUIT DIAGNOSIS >

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U1010 CONTROL UNIT (CAN)

DTC Logic

INFOID:0000000010377828

DTC DETECTION LOGIC

POSSIBLE CAUSE

Air bag diagnosis sensor unit

FAIL-SAFE

—

Diagnosis Procedure

INFOID:0000000010377829

1.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

When DTC “U1010–49” is detected, replace Air bag diagnosis sensor unit.

>> Replace Air bag diagnosis sensor unit. Refer to 

SR-28, "Removal and Installation"

.

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC Detection Condition

U1010–49

CONTROL UNIT (CAN)
[Control unit (CAN)]

Air bag diagnosis sensor unit detected internal CAN communication cir-
cuit malfunction.

SRC-42

< DTC/CIRCUIT DIAGNOSIS >

B0001 DRIVER AIR BAG MODULE

B0001 DRIVER AIR BAG MODULE

DTC Description

INFOID:0000000010431038

DTC DETECTION LOGIC

POSSIBLE CAUSE

[B0001–00, B0001–09, B0001–1A]

• Connection malfunction or short circuit of harness and connector
• Internal malfunction of driver air bag module
• Internal malfunction of air bag diagnosis sensor unit

[B0001–11]

• Connection malfunction or short circuit to ground of harness and connector
• Internal malfunction of driver air bag module
• Internal malfunction of air bag diagnosis sensor unit

[B0001–12]

• Connection malfunction or short circuit to power supply of harness and connector
• Internal malfunction of driver air bag module
• Internal malfunction of air bag diagnosis sensor unit

[B0001–13]

• Connection malfunction or open circuit of harness and connector
• Internal malfunction of driver air bag module
• 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-42, "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:0000000010431039

WARNING:

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B0001–00

DRIVER AIRBAG MODULE 
[Driver Frontal Stage 1 Deployment Control 
(Subfault)]

Driver air bag module circuits   are shorted to each other
(including the spiral cable)

B0001–09

Driver air bag module circuits   are shorted to each other
(including the spiral cable)

B0001–11

Driver air bag module circuit is shorted to ground
(including the spiral cable)

B0001–12

Driver air bag module circuit is shorted to power supply circuit
(including the spiral cable)

B0001–13

Driver air bag module circuit is open
(including the spiral cable)

B0001–1A

Driver air bag module circuits   are shorted to each other
(including the spiral cable)

B0001 DRIVER AIR BAG MODULE

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< DTC/CIRCUIT DIAGNOSIS >

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• 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.

CHECK DTC

Perform each inspection according to the displayed DTC.

Which DTC is displayed?

[B0001–13]>> GO TO 4.
[B0001–12]>> GO TO 8.
[B0001–09]>> GO TO 5.
[B0001–00, B0001–09, B0001–1A]>> GO TO 6.

4.

CHECK SPIRAL CABLE CIRCUIT 1

1.

Turn ignition switch OFF.

2.

Disconnect driver air bag module connector and combination switch (spiral cable) connector.

3.

Check continuity between spiral cable terminals.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace spiral cable. Refer to 

SR-17, "Removal and Installation"

.

5.

CHECK SPIRAL CABLE CIRCUIT 2

1.

Turn ignition switch OFF.

2.

Disconnect driver air bag module connector and combination switch (spiral cable) connector.

3.

Check continuity between spiral cable terminal and ground.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace spiral cable. Refer to 

SR-17, "Removal and Installation"

.

6.

CHECK SPIRAL CABLE CIRCUIT 3

1.

Turn ignition switch OFF.

2.

Disconnect driver air bag module harness connector and combination switch (spiral cable) harness con-
nector.

3.

Check continuity between spiral cable terminals.

Terminal

Continuity 

13

17

Existed

14

18

Terminal

Ground

Continuity 

13

Not existed

14

SRC-44

< DTC/CIRCUIT DIAGNOSIS >

B0001 DRIVER AIR BAG MODULE

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace spiral cable. Refer to 

SR-17, "Removal and Installation"

.

7.

CHECK SPIRAL CABLE CIRCUIT 4

Check continuity between spiral cable terminals.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace spiral cable. Refer to 

SR-17, "Removal and Installation"

.

8.

REPLACE SPIRAL CABLE

1.

Replace spiral cable. Refer to 

SR-17, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-42, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 9.

NO

>> INSPECTION END

9.

REPLACE DRIVER AIR BAG MODULE

1.

Replace driver air bag module. Refer to 

SR-14, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-42, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 10.

NO

>> INSPECTION END

10.

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-42, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 1.

NO

>> INSPECTION END

Terminal

Continuity 

13

14

Not existed

Terminal

Continuity 

17

18

Not existed

B0010 PASSENGER AIR BAG MODULE

SRC-45

< DTC/CIRCUIT DIAGNOSIS >

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B0010 PASSENGER AIR BAG MODULE

DTC Description

INFOID:0000000010431040

DTC DETECTION LOGIC

POSSIBLE CAUSE

[B0010–09, B0010–1A]

• Connection malfunction or short circuit of harness and connector
• Internal malfunction of passenger air bag module
• Internal malfunction of air bag diagnosis sensor unit

[B0010–11]

• Connection malfunction or short circuit to ground of harness and connector
• Internal malfunction of passenger air bag module
• Internal malfunction of air bag diagnosis sensor unit

[B0010–12]

• Connection malfunction or short circuit to power supply of harness and connector
• Internal malfunction of passenger air bag module
• Internal malfunction of air bag diagnosis sensor unit

[B0010–13]

• Connection malfunction or open circuit of harness and connector
• Internal malfunction of passenger air bag module
• 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-45, "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:0000000010431041

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?

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B0010–09

ASSIST A/B MODULE
[Passenger Frontal Stage 1 Deployment Con-
trol (Subfault)]

Passenger air bag module circuits   are shorted to each other

B0010–11

Passenger air bag module circuit is shorted to ground

B0010–12

Passenger air bag module circuit is shorted to power supply circuit

B0010–13

Passenger air bag module circuit is open

B0010–1A

Passenger air bag module circuits   are shorted to each other

SRC-46

< DTC/CIRCUIT DIAGNOSIS >

B0010 PASSENGER AIR BAG MODULE

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 PASSENGER AIR BAG MODULE

1.

Replace passenger air bag module. Refer to 

SR-19, "Removal and Installation"

2.

Perform DTC confirmation procedure. Refer to 

SRC-45, "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-45, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 1.

NO

>> INSPECTION END

B0020 SIDE AIR BAG MODULE

SRC-47

< DTC/CIRCUIT DIAGNOSIS >

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B0020 SIDE AIR BAG MODULE

DTC Description

INFOID:0000000010431042

DTC DETECTION LOGIC

POSSIBLE CAUSE

[B0020–09, B0020–1A]

• Connection malfunction or short circuit of harness and connector
• Internal malfunction of side air bag module LH
• Internal malfunction of air bag diagnosis sensor unit

[B0020–11]

• Connection malfunction or short circuit to ground of harness and connector
• Internal malfunction of side air bag module LH
• Internal malfunction of air bag diagnosis sensor unit

[B0020–12]

• Connection malfunction or short circuit to power supply of harness and connector
• Internal malfunction of side air bag module LH
• Internal malfunction of air bag diagnosis sensor unit

[B0020–13]

• Connection malfunction or open circuit of harness and connector
• Internal malfunction of side air bag module 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-47, "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:0000000010431043

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?

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B0020–09

SIDE A/B MODULE LH 
[Left Side Airbag Deployment Control (Sub-
fault)]

Side air bag module LH circuits are shorted to each other

B0020–11

Side air bag module LH circuit is shorted to ground

B0020–12

Side air bag module LH circuit is shorted to power supply circuit

B0020–13

Side air bag module LH circuit is open

B0020–1A

Side air bag module LH circuits are shorted to each other

SRC-48

< DTC/CIRCUIT DIAGNOSIS >

B0020 SIDE AIR BAG MODULE

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 SIDE AIR BAG MODULE LH

1.

Replace side air bag module LH. Refer to 

SR-23, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-47, "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-47, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 1. 

NO

>> INSPECTION END