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Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK VEHICLE SECURITY HORN RELAY CONTROL SIGNAL
    1. Turn power switch ON.
    2. Select "VEHICLE SECURITY HORN" in "ACTIVE TEST" mode of "THEFT ALM" of "BCM" using CONSULT.
    3. Check voltage between IPDM E/R harness connector and ground under the following conditions.
      VOLTAGE REFERENCE CHART

      (+) (-) Condition Voltage (V) (Approx.)
      IPDM E/R VEHICLE SECURITY HORN
      Connector Terminal
      E13 34 Ground ON 0 - 1
      OFF 9 - 16

      Is the operation normal? 

      YES: Go to  5.

      NO: Go to 2.

  2. CHECK VEHICLE SECURITY HORN RELAY POWER SUPPLY
    1. Turn power switch OFF.
    2. Disconnect vehicle security horn relay.
    3. Check voltage between vehicle security horn relay harness connector and ground.
      VOLTAGE REFERENCE CHART

      (+) (-) Voltage (V) (Approx.)
      Vehicle security horn relay
      Connector Terminal
      E73 2 Ground Battery voltage

      Is the inspection result normal? 

      YES: Go to 3.

      NO-1: Check 10 A fuse [No. 31 located in the fuse block (J/B)].

      NO-2: Check harness for open or short between vehicle security horn relay and fuse.

  3. CHECK VEHICLE SECURITY HORN CONTROL CIRCUIT
    1. Disconnect IPDM E/R connector.
    2. Check continuity between IPDM E/R harness connector and vehicle security horn relay harness connector.
      CONTINUITY REFERENCE CHART

      IPDM E/R Vehicle security horn relay Continuity
      Connector Terminal Connector Terminal
      E13 34 E73 1 Existed
    3. Check continuity between IPDM E/R harness connector and ground.
      CONTINUITY REFERENCE CHART

      IPDM E/R Ground Continuity
      Connector Terminal
      E13 34 Not existed

      Is the inspection result normal? 

      YES: Go to 4.

      NO: Repair or replace harness.

  4. CHECK VEHICLE SECURITY HORN RELAY

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION ".

    NO: Replace vehicle security horn relay.

  5. CHECK VEHICLE SECURITY HORN CIRCUIT
    1. Disconnect vehicle security horn relay.
    2. Disconnect vehicle security horn connector.
    3. Check continuity between vehicle security horn relay harness connector and vehicle security horn harness connector.
      CONTINUITY REFERENCE CHART

      Vehicle security horn relay Vehicle security horn Continuity
      Connector Terminal Connector Terminal
      E73 3 E6 1 Existed
    4. Check continuity between vehicle security horn relay harness connector and ground.
      CONTINUITY REFERENCE CHART

      Vehicle security horn relay Ground Continuity
      Connector Terminal
      E73 3 Not existed
    5. Check continuity between vehicle security horn harness connector and ground.
      CONTINUITY REFERENCE CHART

      Vehicle security horn Ground Continuity
      Connector Terminal
      E7 2 Existed

      Is the inspection result normal? 

      YES: Go to 6.

      NO: Repair or replace harness.

  6. CHECK VEHICLE SECURITY HORN RELAY

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: Replace vehicle security horn.

    NO: Replace vehicle security horn relay.

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