LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2012 >> Altima Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Security Control System (Coupe)) >> DTC/Circuit Diagnosis >> Key Cylinder Switch >> Component Function Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Component Function Check

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL

    Check KEY CYL UN-SW, KEY CYL UN-SW in "DATA MONITOR" mode for "POWER DOOR LOCK SYSTEM" with CONSULT. Refer to "DOOR LOCK: CONSULT FUNCTION (BCM - DOOR LOCK) ".

    Monitor item Condition
    KEY CYL LK-SW Lock : ON
    Neutral / Unlock : OFF
    KEY CYL UN-SW Unlock : ON
    Neutral / Lock : OFF

    Is the inspection result normal? 

    YES: Key cylinder switch is OK.

    NO: With LH and RH anti-pinch, refer to "DIAGNOSIS PROCEDURE (WITH LH AND RH ANTI-PINCH) ".

    NO: With LH anti-pinch only, refer to "DIAGNOSIS PROCEDURE (WITH LH ANTI-PINCH ONLY) ".