Nissan Sentra B18 (2020-2025) Service Manual: B0030 Rear Side Air Bag Module Lh

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC detecting condition
B0030–13	REAR SIDE A/B MODULE LH [OPEN]	Diagnosis condition	When ignition switch is ON.
		Signal (terminal)	Rear LH side air bag module circuit (terminals 3 and 4)
		Threshold	—
		Diagnosis delay time	—
B0030–12	REAR SIDE A/B MODULE LH [VB-SHORT]	Diagnosis condition	When ignition switch is ON.
		Signal (terminal)	Rear LH side air bag module circuit (terminals 3 and 4)
		Threshold	—
		Diagnosis delay time	—
B0030–11	REAR SIDE A/B MODULE LH [GND-SHORT]	Diagnosis condition	When ignition switch is ON.
		Signal (terminal)	Rear LH side air bag module circuit (terminals 3 and 4)
		Threshold	—
		Diagnosis delay time	—
B0030–1A	REAR SIDE A/B MODULE LH [SHORT]	Diagnosis condition	When ignition switch is ON.
		Signal (terminal)	Rear LH side air bag module circuit (terminals 3 and 4)
		Threshold	—
		Diagnosis delay time	—
B0030–1B	REAR SIDE A/B MODULE LH [HIGH RESISTANCE]	Diagnosis condition	When ignition switch is ON.
		Signal (terminal)	Rear LH side air bag module circuit (terminals 3 and 4)
		Threshold	—
		Diagnosis delay time	—
B0030–09	REAR SIDE A/B MODULE LH [SHORT]	Diagnosis condition	When ignition switch is ON.
		Signal (terminal)	Rear LH side air bag module circuit (terminals 3 and 4)
		Threshold	—
		Diagnosis delay time	—

POSSIBLE CAUSE

[OPEN]

• Connection malfunction or open circuit of harness and connector

• Internal malfunction of rear LH side air bag module

• Internal malfunction of air bag diagnosis sensor unit

[VB-SHORT]

• Connection malfunction or short circuit to power supply of harness and connector

• Internal malfunction of rear LH side air bag module

• Internal malfunction of air bag diagnosis sensor unit

[GND-SHORT]

• Connection malfunction or short circuit to ground of harness and connector

• Internal malfunction of rear LH side air bag module

• Internal malfunction of air bag diagnosis sensor unit

[SHORT]

• Connection malfunction or short circuit of harness and connector

• Internal malfunction of rear LH side air bag module

• Internal malfunction of air bag diagnosis sensor unit

[HIGH RESISTANCE]

• Connection malfunction or high resistance of circuit of harness and connector

• Internal malfunction of rear LH side air bag module

• Internal malfunction of air bag diagnosis sensor unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1. CHECK SELF DIAGNOSTIC RESULT

   1. CONSULT

      1. Ignition switch ON.

      2. Select “Self Diagnostic Result” mode of “AIR BAG”.

      3. Check for DTC.

   Is the DTC detected?

   YES>>

   (Current DTC) Refer to DTC Diagnosis Procedure.

   YES>>

   (Past DTC) GO TO 2.

   NO>>

   Inspection End.

2. ERASE SELF DIAGNOSTIC RESULT

   1. CONSULT

      Erase the DTC.

   Can the DTC be erased?

   YES >>

   Inspection End.

   NO >>

   Refer to DTC Diagnosis Procedure.

DTC CONFIRMATION PROCEDURE

1. CHECK SELF DIAGNOSTIC RESULT

   1. CONSULT

      1. Ignition switch ON.

      2. Check the air bag warning lamp status. Refer to 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 DTC Diagnosis Procedure.

   NO >>

   Inspection End.

Diagnosis Procedure

Diagnosis Procedure

Warning:

• Before servicing, ignition switch OFF, disconnect battery negative terminal, and wait at least 3 minutes or more (to discharge backup capacitor).

• Never use an unspecified tester or other measuring device.

1. HARNESS CONNECTOR

   1. 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

   1. CONSULT

      1. Reconnect all harness connectors.

      2. Ignition switch ON.

      3. Select “Self Diagnostic Result” mode of “AIR BAG”.

      4. Check for DTC.

   Is DTC still current?

   YES >>

   GO TO 3.

   NO >>

   Refer to Intermittent Incident.

3. WIRING HARNESS

   1. 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

   1. CONSULT

      1. Reconnect all harness connectors.

      2. Ignition switch ON.

      3. Select “Self Diagnostic Result” mode of “AIR BAG”.

      4. Check for DTC.

   Is DTC still current?

   YES >>

   GO TO 5.

   NO >>

   Refer to Intermittent Incident.

5. REAR LH SIDE AIR BAG MODULE

   1. CONSULT

      1. Replace the rear LH side air bag module. Refer to Removal and Installation.

      2. Ignition switch ON.

      3. Select “Self Diagnostic Result” mode of “AIR BAG”.

      4. Check for DTC.

   Is DTC still current?

   YES >>

   GO TO 6.

   NO >>

   Clear DTC. Inspection End.

6. AIR BAG DIAGNOSIS SENSOR UNIT

   1. CONSULT

      1. Replace the air bag diagnosis sensor unit. Refer to Removal and Installation.

      2. Ignition switch ON.

      3. Select “Self Diagnostic Result” mode of “AIR BAG”.

      4. Check for DTC.

   Is DTC still current?

   YES >>

   GO TO 7.

   NO >>

   Clear DTC. Inspection End.

7. RELATED HARNESS

   1. Replace the related harness.

   >>

   Inspection End.