Nissan Murano: Security Control System :: Dtc/circuit Diagnosis / B2608 Starter Relay

Nissan Murano (Z52) 2015-2024 Service Manual / Body Exterior, Doors, Roof & Vehicle Security / Security Control System :: Dtc/circuit Diagnosis / B2608 Starter Relay

DTC Description

DTC DETECTION LOGIC

NOTE:

  • If DTC B2608 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to DTC Description.

  • If DTC B2608 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to DTC Description.

DTC No. CONSULT screen terms (Trouble diagnosis content) DTC Detection Condition
B2608 STARTER RELAY (Starter relay) Diagnosis condition When ignition switch is ON.
Signal (terminal) —
Threshold BCM outputs starter motor relay OFF signal but BCM receives starter motor relay ON signal from IPDM E/R (CAN)
Diagnosis delay time —

POSSIBLE CAUSE

  • IPDM E/R

  • Harness or connectors

    (Starter relay circuit is open or shorted.)

  • Harness or connector

    (The CAN communication line is open or shorted.)

FAIL-SAFE

Inhibit engine cranking

DTC Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

  1. Ignition switch ON under the following conditions to start engine:

    • Shift selector lever: In the P (Park) position.

    • Brake pedal: Depressed.

  2. Wait 1 second after engine started.

  3. Select “Self Diagnostic Result” mode of “BCM”.

  4. Check DTC.

Is DTC detected?

YES>>

Refer to Diagnosis Procedure.

NO>>

Inspection End.

Diagnosis Procedure

CHECK DTC OF IPDM E/R

CONSULT

Select “Self Diagnostic Result” mode of “IPDM E/R”.

Is DTC detected?

YES>>

Perform the trouble diagnosis related to the detected DTC. Refer to DTC Index.

NO>>

GO TO 2.

CHECK BCM POWER SUPPLY CIRCUIT

  1. Ignition switch ON.

  2. Check voltage between BCM harness connector and ground.

    (+) (–) Condition

    Voltage

    (Approx.)
    BCM
    Connector Terminal
    M19 62 Ground Selector lever N (Neutral) or P (Park) position Battery voltage
    Other than above 0 V

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

GO TO 3.

CHECK STARTER RELAY CIRCUIT

  1. Ignition switch OFF.

  2. Disconnect IPDM E/R connector.

  3. Disconnect BCM connector.

  4. Check continuity between IPDM E/R harness connector and BCM harness connector.

    IPDM E/R BCM Continuity
    Connector Terminal Connector Terminal
    E119 33 M19 62 Yes

  5. Check continuity between IPDM E/R harness connector and ground.

    IPDM E/R Ground Continuity
    Connector Terminal
    E119 33 No

Is the inspection result normal?

YES>>

Replace IPDM E/R. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK INTERMITTENT INCIDENT

Refer to Intermittent Incident.

>>

Inspection End.

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