Nissan Rogue (T33) 2021-Present Service Manual: 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
-
Select “Inside/outside antenna diagnosis” in “Work supports” mode of “INTELLIGENT KEY”.
-
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
-
Ignition switch OFF.
-
Disconnect Intelligent Key unit connector and push-button ignition switch connector.
-
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 -
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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