1996 Infiniti Q45 BaseFACTORY OEM SERVICE PROCEDURE

Mode II (Switch Signal Monitor)

  1. In this mode, BCM and LCU's monitor respective switches in LAN system for input signals. Switch input signals are monitored in the following order.

    BCM

    • Hood Switch
    • Trunk Compartment Light Switch
    • Trunk Lid Key Cylinder Tamper Switch
    • Trunk Lid Lock/Unlock Switch
    • Door Switches
    • Rear Window Defogger Switch
    • Headlight Switch (First Position)
    • Wiper Switch (INT Function)
    • Wiper Switch (WASH Function)
    • Illumination Control Switch
    • Automatic Drive Positioner Cancel Switch
    • Steering Switch (Tilt - UP/DOWN)
    • Steering Switch (Telescopic - FRONT/REAR)
    • Door Mirror Select Switch (LEFT/RIGHT)
    • Door Mirror Control Switch (LEFT/RIGHT)
    • Door Mirror Control Switch (UP/DOWN)
    • Power Window Lock Switch
    • Power Window Main Switches (UP/DOWN)

    LCU 01-A

    • Headrest Switch (UP/DOWN)
    • Seat Sliding Switch (FRONT/REAR)
    • Seat Reclining Switch (FRONT/REAR)
    • Seat Lifting Switch (Front - UP/DOWN)
    • Seat Lifting Switch (Rear - UP/DOWN)
    • Memory Switch 1
    • Memory Switch 2
    • Set Switch
    • Door Lock/Unlock Switch

    LCU 01-B

    • Power Window Sub-Switch (UP/DOWN)
    • Power Window Automatic Switch
    • Door Key Cylinder Switch
    • Key Cylinder Tamper Switch
    • Lock Knob/Position Detecting Switch
    • Door Handle Switch

    LCU 02-A

    • Headrest Switch (UP/DOWN)
    • Seat Sliding Switch (FRONT/REAR)
    • Seat Reclining Switch (FRONT/REAR)
    • Seat Lifting Switch (Front - UP/DOWN)
    • Seat Lifting Switch (Rear - UP/DOWN)

    LCU 02-B

    • Door Key Cylinder Switch
    • Key Cylinder Tamper Switch
    • Lock Knob/Position Detecting Switch
    • Power Window Sub-Switch (UP/DOWN)
    • Door Handle Switch

    LCU 03

    • Power Window Sub-Switch (UP/DOWN)
    • Lock Knob/Position Detecting Switch

    LCU 04

    • Power Window Sub-Switch (UP/DOWN)
    • Lock Knob/Position Detecting Switch

    LCU 05

    • Door Switch
    • Seat Belt Switch

    LCU 06

    • Door Switch

    LCU 07

    • Door Lock Button
    • Door Unlock Button
    • Interior Light Button
    • Trunk Lid Opener Button

  2. To enter on-board diagnostic Mode II, turn ignition off. Ensure shift lever is in "P" position. Set power window lock switch in OFF position. Ensure all doors are closed. Set interior light switch in "O" position.
  3. Turn ignition on and then off. Repeatedly press rear defogger switch more than 10 times in 10 seconds and keep it pressed in. Self-diagnostic indicator lights should come on. Turn ignition switch to ON position when indicator lights come on.
  4. System is now in on-board diagnostic Mode II. Indicator lights will come on and chime will sound each time input signal from a switch is detected. See Fig 1 . To exit diagnostic mode, turn ignition off.
Fig 1: Switch Input Signal Patterns
G96J06332Courtesy of NISSAN MOTOR CO., U.S.A.
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