Nissan Rogue (T33) 2021-Present Service Manual: Dtc/circuit Diagnosis :: U1ca3-08 Lin Communication 4

Nissan Rogue (T33) 2021-Present Service Manual / Body Interior :: Seat / Dtc/circuit Diagnosis :: U1ca3-08 Lin Communication 4

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen items

(Trouble diagnosis content) 		DTC detection condition
U1CA3-08

LIN communication 4

(Local interconnect network communication 4) 		Diagnosis condition Engine running
Signal (terminal) LIN (heated seat) signal (terminal #45)
Threshold A/C amp. is not transmitting or receiving LIN communication with each seat heater
Diagnosis delay time 2 seconds or more

POSSIBLE CAUSE

  • Fuse

  • Harness or connectors (seat heater circuit is open or short to ground)

  • Each seat cushion heater

  • A/C amp.

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

  1. Start the engine.

  2. Select “Self diagnosis result” mode of “HVAC”.

Is 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 DTC

CONSULT

  1. Start the engine.

  2. Select “Self diagnosis result” mode of “HVAC”.

  3. Check following DTC.

    DTC

    Items

    (CONSULT screen terms)     		Reference
    U1CA6-02 FRONT SEAT HEATER RH COMMUNICATION DTC Description
    U1CA7-02 FRONT SEAT HEATER LH COMMUNICATION DTC Description
    U1CA8-02 REAR SEAT HEATER RH COMMUNICATION DTC Description
    U1CA9-02 REAR SEAT HEATER LH COMMUNICATION DTC Description

Is DTC detected?

YES>>

Perform DTC diagnosis procedure that is detecting.

NO>>

Replace A/C amp. Refer to Removal and Installation.

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