Nissan Rogue (T33) 2021-Present Service Manual: Dtc/circuit Diagnosis :: B2090-14 Nats Antenna Amp.

Nissan Rogue (T33) 2021-Present Service Manual / Body Exterior, Doors, Roof & Vehicle Security :: Security Control System / Dtc/circuit Diagnosis :: B2090-14 Nats Antenna Amp.

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen items

(Trouble diagnosis content) 		DTC detecting condition
B2090–14

NATS antenna amp.

(Nissan anti-theft system antenna amplifier) 		Diagnosis condition Work supports ‟Inside/outside antenna diagnosis”: activated
Signal (terminal) NATS antenna amp. signal
Threshold Inactive communication between NATS antenna amp. and Intelligent Key unit
  1 second or less

POSSIBLE CAUSE

  • Harness or connectors

    (NATS antenna amp. circuit is open or shorted.)

  • Push-button ignition switch (NATS antenna amp.)

  • Intelligent Key unit

FAIL-SAFE

Diagnosis delay time

—

CONFIRMATION PROCEDURE

DTC CONFIRMATION

CONSULT

  1. Select “Inside/outside antenna diagnosis” in “Work supports” mode of “INTELLIGENT KEY”.

  2. Select “Self diagnosis result” mode of “INTELLIGENT KEY”.

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 NATS ANTENNA AMP. COMMUNICATION SIGNAL

Check signal between push-button ignition switch harness connector and ground using an oscilloscope.

(+) (–) Condition

Signal

(Reference value)
Push-button ignition switch
Connector Terminal
M17 2 Ground Intelligent Key battery is removed and brake pedal is depressed When a registered Intelligent Key backside is contacted to push-button ignition switch 0 V
Other than above

3 When a registered Intelligent Key backside is contacted to push-button ignition switch 0 V
Other than above

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK NATS ANTENNA AMP. COMMUNICATION SIGNAL CIRCUIT

  1. Ignition switch OFF.

  2. Disconnect Intelligent Key unit connector and push-button ignition switch connector.

  3. Check continuity between push-button ignition switch harness connector and Intelligent Key unit harness connector.

    USA production
    Push-button ignition switch Intelligent Key unit Continuity
    Connector Terminal Connector Terminal
    M17 2 M184 19 Yes
    3 20
    Japan production
    Push-button ignition switch Intelligent Key unit Continuity
    Connector Terminal Connector Terminal
    M17 2 M189 19 Yes
    3 20

  4. Check continuity between push-button ignition switch harness connector and ground.

    Push-button ignition switch — Continuity
    Connector Terminal
    M17 2 Ground No
    3

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness.

REPLACE PUSH-BUTTON IGNITION SWITCH

Replace push-button ignition switch. Refer to Removal and Installation.

Is the inspection result normal?

YES>>

Inspection End.

NO>>

GO TO 4.

REPLACE INTELLIGENT KEY UNIT

Replace Intelligent Key unit. Refer to Removal and Installation.

>>

Inspection End.

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