Nissan Rogue (T33) 2021-Present Service Manual: B3a72 Intelligent Battery Sensor

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / B3a72 Intelligent Battery Sensor

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
B3A72 00

USM Voltage Measurement Failure

(Open Circuit)

[USM voltage measurement failure (Open circuit)] 		Diagnosis condition

  • Ignition switch ON

  • Battery voltage: More than 11 V
Signal ―
Threshold Voltage value above 17.9V or voltage value below 4.8V.
Diagnosis delay time 60 seconds

POSSIBLE CAUSE

  • Harness or connectors (The IPDM E/R circuit is open or shorted.)

  • IPDM E/R

FAIL-SAFE

Engine Control System

Not applicable

Stop/Start System

Not applicable

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

  1. Ignition switch OFF and wait at least 10 seconds.

  2. Ignition switch ON.

  3. Ignition switch OFF and wait at least 10 seconds.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Ignition switch ON.

  2. Check DTC.

Is DTC detected?

YES>>

Proceed to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK IPDM E/R CIRCUIT

Check IPDM E/R. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace error-detected parts.

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