Nissan Rogue (T33) 2021-Present Service Manual: B2fac-12 Accessory Relay

Nissan Rogue (T33) 2021-Present Service Manual / Electrical & Power Control :: Power Control System / Power Distribution System :: Dtc/circuit Diagnosis / B2fac-12 Accessory Relay

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen items

(Trouble diagnosis content) 		DTC detection condition
B2FAC-12

Accessory relay

(Accessory relay) 		Diagnosis condition When ignition switch is ON
Signal (terminal) Accessory relay control signal [terminal #30 (with type A meter) or #34 (with type B meter)]
Threshold 16 V or more
Diagnosis delay time 1 second or more

POSSIBLE CAUSE

  • Harness or connectors (accessory relay control signal circuit is shorted to battery)

  • Accessory relay

  • BCM

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

  1. Ignition switch ON.

  2. Select “Self diagnosis result” mode of “BCM”.

Is DTC detected?

YES>>

Refer 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 ACCESSORY RELAY CONTROL SIGNAL CIRCUIT (SHORT TO BATTERY)

  1. Ignition switch OFF.

  2. Disconnect BCM connector and accessory relay connector.

  3. Check voltage between BCM harness connector and ground.

    With type A meter
    + -

    Voltage

    (Approx.)
    BCM
    Connector Terminal
    M51 30 Ground 0 V
    With type B meter
    + -

    Voltage

    (Approx.)
    BCM
    Connector Terminal
    M18 34 Ground 0 V

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair the harness or connector.

CHECK ACCESSORY RELAY

Check accessory relay. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

Replace accessory relay.

Component Inspection

CHECK ACCESSORY RELAY

  1. Ignition switch OFF.

  2. Disconnect accessory relay connector.

  3. Check continuity between accessory relay terminals.

Accessory relay Condition Continuity
Terminal
12 V direct current supply between terminals and . Yes
No current supply No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace accessory relay.

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