DTC DETECTION LOGIC
| DTC No. |
CONSULT screen terms (Trouble diagnosis content) | DTC detection condition | |
|---|---|---|---|
| U1A0E |
SOS SWITCH ON STUCK (SOS switch ON stuck) |
Diagnosis condition | When ignition switch is ON. |
| Signal (terminal) | SOS switch signal | ||
| Threshold | Continue being turned ON | ||
| Diagnosis delay time | 10 seconds or more | ||
POSSIBLE CAUSE
Harness or connectors
Telematics switch
TCU
FAIL-SAFE
Telematics system does not function (Only SOS call does not operate)
Telematics switch LED indicator is turned OFF
PERFORM DTC CONFIRMATION PROCEDURE
CONSULT
Ignition switch ON.
Select “Self Diagnostic Result” mode of “TELEMATICS”.
Check DTC.
Is DTC U1A0E detected?
YES>>Proceed to DTC Diagnosis Procedure.
NO>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO>>Confirmation after repair: Inspection End.
CHECK ECALL SW FOR SHORT CIRCUIT
Ignition switch OFF.
Disconnect TCU connector and telematics switch connector.
Check the continuity between TCU connector and ground.
| TCU | Ground | Continuity | |
| Connector | Terminal | ||
| M126 | 37 | — | No |
Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair or replace harness or connectors.
CHECK TELEMATICS SWITCH
Check continuity between telematics switch terminals.
| Telematics switch connector R21 | Condition | Continuity | |
| Terminal | Terminal | ||
| 3 | 7 | Switch pressed | Yes |
| Switch released | No | ||
Is the inspection result normal?
YES>>Replace TCU. Refer to Removal and Installation.
NO>>Replace telematics switch. Refer to Removal and Installation.
U1a0b Mic in Conn
U1a10 Airbag Signal
Your vehicle has two types of security systems:
Vehicle security system NISSAN Vehicle Immobilizer SystemThe vehicle security system provides visual and audible alarm signals if someone opens the doors, liftgate or the hood when the system is armed. It is not, however, a motion detection type system that activates when a vehicle is moved or when a vibration occurs.