Nissan Sentra B18 (2020-2025) Service Manual / Restraints / Srs Air Bag Control System :: Dtc/circuit Diagnosis / Air Bag (air Bag Diagnosis Sensor Unit) / B1036-16 Ignition Voltage

Nissan Sentra B18 (2020-2025) Service Manual: B1036-16 Ignition Voltage

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC Detection Condition
B1036-16	Ignition voltage (Ignition voltage)	Diagnosis condition	When ignition switch is ON.
		Signal (terminal)	Ignition low voltage signal
		Threshold	Power supply malfunction (low voltage) of air bag diagnosis sensor unit
		Diagnosis delay time	10 seconds or more.

POSSIBLE CAUSE

Malfunction of battery voltage (9 V or less)
Connection malfunction of harness or connector
Internal malfunction of air bag diagnosis sensor unit

FAIL-SAFE

—

Confirmation Procedure

Confirmation Procedure

CHECK SELF DIAGNOSTIC RESULT
1. CONSULT
  1. Ignition switch ON.
  2. Select “Self Diagnostic Result” mode of “AIR BAG”.
  3. Check for DTC.
Is malfunctioning part detected?
YES >>
Refer to DTC Diagnosis Procedure.
NO >>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO >>
Confirmation after repair: Inspection End.

Dtc Diagnosis Procedure

DTC 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.

CHECK BATTERY VOLTAGE
1. Check battery voltage. Refer to Work Flow.
Is the inspection result normal?
YES >>
GO TO 2.
NO >>
Repair or replace the malfunctioning parts.
CHECK HARNESS CONNECTOR
1. Check the harness connector.
Is the inspection result normal?
YES >>
GO TO 3.
NO >>
Replace harness connectors.
CHECK WIRING HARNESS
1. Check the wiring harness externals.
Is the inspection result normal?
YES >>
GO TO 4.
NO >>
Replace wiring harness.
REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
1. 1. Replace air bag diagnosis sensor unit. Refer to Removal and Installation.
  2. Perform DTC confirmation procedure. Refer to DTC Confirmation Procedure.
Is DTC detected?
YES>>
GO TO 1.
NO>>
Inspection End.

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