Nissan Rogue Service Manual: B14XX air bag diagnosis sensor unit

Nissan Rogue Service Manual / Restraints / SRS Airbag Control System / DTC/circuit diagnosis / B14XX air bag diagnosis sensor unit

Description

DTC B1XXX AIR BAG DIAGNOSIS SENSOR UNIT

The air bag diagnosis sensor unit will run self diagnostics when the ignition switch is turned ON. It has the potential to set many diagnostic trouble codes which will conform to the B1XXX format, but will not match any other SRS diagnostic trouble codes. Refer to SRC-18, "CONSULT Function (AIR BAG)".

DTC Logic

DTC DETECTION LOGIC

With CONSULT

CONSULT name	DTC	DTC detecting condition	Repair order
CONTROL UNIT [UNIT FAIL]	B14XX	Air bag diagnosis sensor unit is malfunctioning.	Refer to SRC-89, "Diagnosis Procedure".
AIRBAG DISPOSAL COMPLETION

DTC CONFIRMATION PROCEDURE (With CONSULT)

1.CHECK SELF-DIAG RESULT

Turn ignition switch ON.
Check for DTC using CONSULT.

Is the DTC detected? YES (Current DTC)>>Refer to SRC-89, "Diagnosis Procedure".

YES (Past DTC)>>GO TO 2.

NO >> Inspection End.

2.ERASE SELF-DIAG RESULT

Erase the DTC using CONSULT.

Can the DTC be erased? YES >> Inspection End.

NO >> Refer to SRC-89, "Diagnosis Procedure".

DTC CONFIRMATION PROCEDURE (Without CONSULT)

1.CHECK SELF-DIAG RESULT

Turn ignition switch ON.
Check the air bag warning lamp status. Refer to SRC-16, "On Board Diagnosis Function".

NOTE: SRS will not enter diagnosis mode if no malfunction is detected in user mode. Is the DTC detected? YES >> Refer to SRC-89, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

1.HARNESS CONNECTOR

Visually inspect all applicable harness connectors for the following:

Visible damage to connector or terminal
Loose terminal
Poor connection

NOTE: All harness connectors should be inspected from the air bag diagnosis sensor unit to the end component (including any in-line connectors).

Is the inspection result normal? YES >> GO TO 2.

NO >> Perform one of the following repairs:

Visible damage: Replace the harness.
Loose terminal: Secure the terminal.
Poor connection: Secure the connection.

2.CONFIRM DTC

Reconnect all harness connectors.
Turn ignition switch ON.
Check for DTC using CONSULT.

Is DTC still current? YES >> GO TO 3.

NO >> Refer to GI-41, "Intermittent Incident".

3.WIRING HARNESS

Check the wiring harness for visible damage.

NOTE: The entire wiring harness should be inspected from the air bag diagnosis sensor unit to the end component (including any in-line connectors).

Is the inspection result normal? YES >> GO TO 4.

NO >> Replace the harness.

4.CONFIRM DTC

Reconnect all harness connectors.
Turn ignition switch ON.

Is DTC still current? YES >> GO TO 5.

NO >> Refer to GI-41, "Intermittent Incident".

5.AIR BAG DIAGNOSIS SENSOR UNIT

Replace the air bag diagnosis sensor unit. Refer to SR-26, "Removal and Installation".
Turn ignition switch ON.
Check for DTC using CONSULT.

Is DTC still current? YES >> GO TO 6.

NO >> Clear DTC. Inspection End.

6.RELATED HARNESS

Replace the related harness.

>> END

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