LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1010 (Rear Window Defogger) >> Rear Window Defogger >> Rear Window Defogger Switch Circuit Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Rear Window Defogger Switch Circuit Check

WARNING: This page is about a different car, the 2003 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK REAR WINDOW DEFOGGER SWITCH OPERATION 

    With CONSULT-II 

    Check ("REAR DEF SW", "IGN ON SW") in DATA MONITOR mode with CONSULT-II.

    1. When rear window defogger switch is turned to ON 
    2. REAR DEF SW : ON 
    3. When ignition switch is turned to ON 
    4. IGN ON SW : ON 
    Fig 1: Displaying REAR DEF SW, IGN ON SW In DATA MONITOR Mode
    G03358989Courtesy of NISSAN MOTOR CO., U.S.A.

    With out CONSULT-II 

    1. Turn ignition switch ON.
    2. Check voltage between BCM connector ground.
    CONNECTOR TERMINAL SPECIFICATION CHART

    Connector Terminal (Wire color) Condition Voltage (V) (Approx.)
    (+) (-)
    M37 69 (G/W) Ground Rear window defogger switch is pressed. 0
    Rear window defogger switch is OFF. 5

    OK or NG

    1. OK : Rear window defogger switch check is OK.
    2. NG : GO TO 2.
    Fig 2: Checking Voltage Between BCM Connector Ground
    G03358990Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK HARNESS CONTINUITY 
    1. Turn ignition switch OFF.
    2. Disconnect BCM and A/C and AV switch connector.
    3. Check continuity between BCM connector M37 terminal 69 and A/C and AV switch connector M48 terminal 16.
      1. 69 (G/W) - 16 (G/W) : Continuity should exist. 
      Fig 3: Checking Continuity Between BCM Connector M37 Terminal 69 And A/C And AV Switch Connector M48 Terminal 16
      G03358991Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between BCM connector M37 terminal 69 and ground
      1. 69 (G/W) - Ground : Continuity should not exist. 

    OK or NG

    1. OK : GO TO 3.
    2. NG : Repair or replace harness between BCM and A/C and AV switch.
  3. CHECK BCM OUTPUT SIGNAL 
    1. Connect BCM connector.
    2. Turn ignition switch ON.
    3. Check voltage between BCM connector M37 terminal 69 and ground.
      1. 69 (G/W) - Ground : Approx. 5 

    OK or NG

    1. OK : Replace A/C and AV switch.
    2. NG : Replace BCM.
    Fig 4: Checking Voltage Between BCM Connector M37 Terminal 69 And Ground
    G03358992Courtesy of NISSAN MOTOR CO., U.S.A.
scientia non olet · About LEMON Manuals