Nissan Murano: Security Control System :: Dtc/circuit Diagnosis / Horn Function

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

Component Function Check

CHECK FUNCTION

CONSULT

  1. Select "Nissan Murano Vehicle SECURITY HORN" in "Active Test" mode of "BCM(THEFT ALM)".

  2. Check the horn operation.

    Test item Description
    Nissan Murano Vehicle SECURITY HORN ON Horn Sounds (for 0.5 sec)

Is the operation normal?

YES>>

Inspection End.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK HORN FUNCTION

Check that horns function properly using horn switch.

Do horns sound?

YES>>

GO TO 2.

NO>>

Check horn circuit. Refer to Wiring Diagram.

CHECK HORN CONTROL CIRCUIT

  1. Disconnect horn relay connector.

  2. Disconnect IPDM E/R connector.

  3. Check continuity between IPDM E/R harness connector and horn relay harness connector.

    IPDM E/R Horn relay Continuity
    Connector Terminal Connector Terminal
    E119 22 H-1 (horn relay 1) 1 Yes
    23 E58 (horn relay 2)

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

    IPDM E/R Ground Continuity
    Connector Terminal
    E119 22 No
    23

Is the inspection result normal?

YES>>

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

NO>>

Repair or replace harness.

CHECK HORN CIRCUIT

  1. Disconnect horn connector.

  2. Check continuity between horn relay harness connector and horn harness connector.

    Horn relay Horn Continuity
    Connector Terminal Connector Terminal
    H-1 (horn relay 1) 3 E222 (horn [low]) 1 Yes
    E58 (horn relay 2) E232 (horn [high])

  3. Check continuity between horn relay harness connector and ground.

    Horn relay Ground Continuity
    Connector Terminal
    H-1 (horn relay 1) 3 No
    E58 (horn relay 2)

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace harness.

CHECK HORN RELAY

Refer to Component Inspection.

Is the inspection result normal?

YES>>

Replace malfunctioning horn. Refer to Removal and Installation.

NO>>

Replace malfunctioning horn relay.

Component Inspection

CHECK HORN RELAY

  1. Ignition switch OFF.

  2. Disconnect horn relay connector.

  3. Check voltage between horn relay terminal and ground under the following conditions:

Horn relay Condition Continuity
 
Terminal
3 2 12 V direct current supply between terminals 1 and 2 Yes
No current supply No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace horn relay.

    Hood Switch

    Component Function Check CHECK FUNCTION CONSULT Select “HOOD SW” and “HOOD SW 2” in “Data Monitor” mode of “IPDM E/R”. Check “HOOD SW” and “HOOD SW 2” indication under the following condition: Monitor item Condition Indication HOOD SW Hood Open OFF Close ON HOOD SW 2 Open ON Close OFF Is the indication normal? YES>> Hood switch is OK...

    Security Indicator Lamp

    Component Function Check CHECK FUNCTION CONSULT Select the "THEFT IND" in "Active Test" mode of "BCM(IMMU)". Check security indicator lamp operation...

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