Nissan Rogue (T33) 2021-Present Service Manual: Dtc/circuit Diagnosis :: B2c20-12 Starter Control Relay

Nissan Rogue (T33) 2021-Present Service Manual / Body Exterior, Doors, Roof & Vehicle Security :: Security Control System / Dtc/circuit Diagnosis :: B2c20-12 Starter Control Relay

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen items

(Trouble diagnosis content) 		DTC detecting condition
B2C20-12

Starter control relay

(Starter control relay) 		Diagnosis condition Ignition switch ON
Signal (terminal) Starter cut relay signal
Threshold When BCM detects starter cut relay circuit is short to buttery
Diagnosis delay time 1 second or less

POSSIBLE CAUSE

  • Harness or connectors

    (Starter cut relay circuit is short to battery)

  • Starter cut relay

FAIL-SAFE

—

CONFIRMATION PROCEDURE

DTC CONFIRMATION

CONSULT

  1. Ignition switch ON under the following conditions and wait 1 second or more.

    • Selector lever: In the P position.

    • Brake pedal: Depressed.

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

Is the 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 STARTER CUT RELAY INPUT SIGNAL

Check voltage between BCM harness connector and ground.

(+) (-) Condition

Voltage

(Approx.)
BCM
Connector Terminal
E29 (with type B meter) 123 Ground Other than following Battery voltage
At engine cranking 0 V
E60 (with type A meter) 124

Is the inspection result normal?

YES>>

Inspection End.

NO>>

GO TO 2.

CHECK STARTER CUT RELAY INPUT SIGNAL CIRCUIT

  1. Ignition switch OFF.

  2. Disconnect BCM connector and starter cut relay connector.

  3. Check continuity between BCM harness connector and starter cut relay harness connector.

    BCM Starter cut relay Continuity
    Connector Terminal Connector Terminal
    E29 (with type B meter) 123 F55 9 Yes
    E60 (with type A meter) 124

  4. Check continuity between BCM harness connector and ground.

    BCM — Continuity
    Connector Terminal
    E29 (with type B meter) 123 Ground No
    E60 (with type A meter) 124

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness.

CHECK STARTER CUT RELAY

Check starter cut relay. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace starter cut relay.

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