Nissan Cube. Instruction — part 908

B1186, B1187, B1188, B1189, B1190, B1191 DIAGNOSIS SENSOR UNIT

SRC-149

< DTC/CIRCUIT DIAGNOSIS >

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B1186, B1187, B1188, B1189, B1190, B1191 DIAGNOSIS SENSOR UNIT

Description

INFOID:0000000009946283

• It detects a shock that is more than the specified level and monitors whether the driver and passenger air

bags, side air bag, curtain air bag, and pre-tensioner seat belts operate normally.

• It contains the “G” sensors for both frontal and side collisions and spare battery function in case of main bat-

tery damage in collision.

DTC Logic

INFOID:0000000009946284

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAG RESULT

With CONSULT

1.

Turn ignition switch ON.

2.

Perform “AIR BAG” Self Diagnostic Result.

Without CONSULT

1.

Turn ignition switch ON.

2.

Check the air bag warning lamp status. Refer to

SRC-18, "Diagnosis with Air Bag Warning Lamp"

.

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-149, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009946285

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 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, "Exploded View"

.

2.

Perform DTC confirmation procedure. Refer to

SRC-149, "DTC Logic"

.

DTC

Display contents of

CONSULT

DTC detecting condition

Possible cause

B1186
B1187
B1188
B1189
B1190
B1191

CONTROL UNIT

Air bag diagnosis sensor unit is malfunctioning

Malfunction in air bag diagnosis sensor unit

SRC-150

< DTC/CIRCUIT DIAGNOSIS >

B1186, B1187, B1188, B1189, B1190, B1191 DIAGNOSIS SENSOR UNIT

Is DTC detected?

YES

>> GO TO 1.

NO

>> INSPECTION END

B1202, B1203, B1204, B1205, B1206, B1207 DIAGNOSIS SENSOR UNIT

SRC-151

< DTC/CIRCUIT DIAGNOSIS >

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SRC

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B1202, B1203, B1204, B1205, B1206, B1207 DIAGNOSIS SENSOR UNIT

Description

INFOID:0000000009946286

• It detects a shock that is more than the specified level and monitors whether the driver and passenger air

bags, side air bag, curtain air bag, and pre-tensioner seat belts operate normally.

• It contains the “G” sensors for both frontal and side collisions and spare battery function in case of main bat-

tery damage in collision.

DTC Logic

INFOID:0000000009946287

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAG RESULT

With CONSULT

1.

Turn ignition switch ON.

2.

Perform “AIR BAG” Self Diagnostic Result.

Without CONSULT

1.

Turn ignition switch ON.

2.

Check the air bag warning lamp status. Refer to

SRC-18, "Diagnosis with Air Bag Warning Lamp"

.

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-151, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009946288

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 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, "Exploded View"

.

2.

Perform DTC confirmation procedure. Refer to

SRC-151, "DTC Logic"

.

DTC

Display contents of

CONSULT

DTC detecting condition

Possible cause

B1202
B1203
B1204
B1205
B1206
B1207

CONTROL UNIT

Air bag diagnosis sensor unit is malfunctioning

Malfunction in air bag diagnosis sensor unit

SRC-152

< DTC/CIRCUIT DIAGNOSIS >

B1202, B1203, B1204, B1205, B1206, B1207 DIAGNOSIS SENSOR UNIT

Is DTC detected?

YES

>> GO TO 1.

NO

>> INSPECTION END