Infiniti QX56 (Z62). Manual - part 1216

SRC-68

< DTC/CIRCUIT DIAGNOSIS >

B1051, B1056 DRIVER AIR BAG MODULE

4.

Check continuity between driver air bag module harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace combination switch (spiral cable). Refer to 

SR-14, "Removal and Installation"

.

4.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-26, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-67, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 5.

NO

>> INSPECTION END

5.

REPLACE DRIVER AIR BAG MODULE

1.

Replace driver air bag module. Refer to 

SR-11, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-67, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 1.

NO

>> INSPECTION END

Driver air bag module

Combination switch (spiral cable)

Continuity 

Connector

Terminal

Connector

Terminal

M301

10

M32

28

Existed

11

30

M300

12

29

9

30

Driver side air bag module

Ground

Continuity 

Connector

Terminal

M301

10

Not existed

11

M300

12

9

B1052, B1057 DRIVER AIR BAG MODULE

SRC-69

< DTC/CIRCUIT DIAGNOSIS >

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B1052, B1057 DRIVER AIR BAG MODULE

DTC Logic

INFOID:0000000006220002

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAG RESULT

 With CONSULT-III

1.

Turn ignition switch ON.

2.

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

 Without CONSULT-III

1.

Turn ignition switch ON.

2.

Check the air bag warning lamp status. Refer to 

SRC-14, "On Board Diagnosis Function"

.

NOTE:
SRS does not enter the diagnosis mode if no malfunction is detected in the user mode.
Is malfunctioning part detected?

YES

>> Refer to 

SRC-69, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006220003

WARNING:

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 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 SPIRAL CABLE CIRCUIT-I

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 combination switch (spiral cable) terminals.

DTC

Display contents of 

CONSULT-III

DTC detecting condition

Possible cause

B1052
B1057

DRIVER AIRBAG 
MODULE 
[SHORT]

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

• Harness or connectors

(The module circuit is shorted.)

• Malfunction in driver air bag module
• Malfunction in spiral cable
• Malfunction in air bag diagnosis sensor unit

SRC-70

< DTC/CIRCUIT DIAGNOSIS >

B1052, B1057 DRIVER AIR BAG MODULE

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace combination switch (spiral cable). Refer to 

SR-14, "Removal and Installation"

.

4.

CHECK SPIRAL CABLE CIRCUIT-II

Check continuity between combination switch (spiral cable) terminals.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace combination switch (spiral cable). Refer to 

SR-14, "Removal and Installation"

.

5.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-26, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-69, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 6.

NO

>> INSPECTION END

6.

REPLACE DRIVER AIR BAG MODULE

1.

Replace driver air bag module. Refer to 

SR-11, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-69, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 1.

NO

>> INSPECTION END

Combination switch (spiral cable)

Continuity 

Connector

Terminal

Connector

Terminal

M301

10

M301

11

Not existed

M300

9

12

Combination switch (spiral cable)

Continuity 

Connector

Terminal

Terminal

M32

28

29

Not existed

30

B1058, B1059, B1060, B1061, B1062, B1063 DIAGNOSIS SENSOR UNIT

SRC-71

< DTC/CIRCUIT DIAGNOSIS >

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B1058, B1059, B1060, B1061, B1062, B1063 DIAGNOSIS SENSOR UNIT

DTC Logic

INFOID:0000000006220004

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAG RESULT

 With CONSULT-III

1.

Turn ignition switch ON.

2.

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

 Without CONSULT-III

1.

Turn ignition switch ON.

2.

Check the air bag warning lamp status. Refer to 

SRC-14, "On Board Diagnosis Function"

.

NOTE:
SRS does not enter the diagnosis mode if no malfunction is detected in the user mode.

Is malfunctioning part detected?

YES

>> Refer to 

SRC-71, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006220005

WARNING:

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 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 connectors.

2.

CHECK WIRING HARNESS

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

YES

>> GO TO 3.

NO

>> Replace wiring harness.

3.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-26, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-71, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 1.

NO

>> INSPECTION END

DTC

Display contents of 

CONSULT-III

DTC detecting condition

Possible cause

B1058
B1059
B1060
B1061
B1062
B1063

CONTROL UNIT 

Air bag diagnosis sensor unit is malfunctioning

Malfunction in air bag diagnosis sensor unit