Nissan Maxima Service and Repair Manual: Door lock function

DOOR LOCK AND UNLOCK SWITCH

DOOR LOCK AND UNLOCK SWITCH : System Diagram

DOOR LOCK AND UNLOCK SWITCH : System Description

DOOR LOCK FUNCTION

Functions Available by Operating the Door Lock and Unlock Switches on Driver Door and Passenger Door

• Interlocked with the locking operation of door lock and unlock switch, door lock actuators of all door lock actuators are locked.
• Interlocked with the unlocking operation of door lock and unlock switch, door lock actuators of all door lock actuators are unlocked.

Functions Available by Operating the Key Cylinder Switch on Driver Door

• Interlocked with the locking operation of door key cylinder, door lock actuators of all door lock actuators are locked.

Selective Unlock Operation

• When door key cylinder is unlocked, door lock actuator driver side is unlocked.
• When door key cylinder is unlocked for the second time within 60 seconds after the first operation, door lock actuators on all doors are unlocked.

Select unlock operation mode can be changed using DOOR LOCK-UNLOCK SET mode in "WORK SUPPORT".

Refer to DLK-53, "DOOR LOCK : CONSULT Function (BCM - DOOR LOCK)".

Key Reminder System

Refer to DLK-49, "System Description".

DOOR LOCK AND UNLOCK SWITCH : Component Parts Location

1. BCM M16, M17, M18, M19, M21 (view with instrument panel removed)
2. Main power window and door lock/unlock switch D7, D8
3. Power window and door lock/unlock switch RH D105
4. Front door lock assembly LH (key cylinder switch) D10 Front door lock actuator RH D108
5. Front door switch LH B8 RH B108
6. Rear door switch LH B18 RH B116
7. Rear door lock actuator LH D205 RH D305
8. Trunk lamp switch and trunk release solenoid T7
9. Fuel lid door lock actuator B27
10. Combination meter M24 11. TCM F15

DOOR LOCK AND UNLOCK SWITCH : Component Description

DOOR REQUEST SWITCH

DOOR REQUEST SWITCH : System Diagram

DOOR REQUEST SWITCH : System Description

Only when pressing the request switch, it is possible to lock and unlock the door by carrying the Intelligent Key.

• The Intelligent Key system is a system that makes it possible to lock and unlock the door locks (door lock/ unlock function) by carrying the Intelligent Key, which operates based on the results of electronic ID verification using two-way communications between the Intelligent Key and the vehicle (BCM).
  CAUTION: The driver should always carry the Intelligent Key
• If an action that does not meet the operating conditions of the Intelligent Key system is taken, the buzzer goes off to inform the driver (Warning chime function).
• When a door lock is locked, unlocked or trunk open with request switch or remote controller button operation, the hazard lamps flash and the Intelligent Key warning buzzer or horn sounds (Hazard and buzzer/horn reminder function).
• The settings for each function can be changed with the CONSULT.
• If an Intelligent Key is lost, a new Intelligent Key can be registered. A maximum of 4 Intelligent Keys can be registered.
• It is possible to perform a diagnosis on the system and register an Intelligent Key with the CONSULT.

OPERATION DESCRIPTION/DOOR LOCK/UNLOCK

• When the BCM detects that each door request switch is pressed, it starts the outside key antenna and inside key antenna corresponding to the pressed door request switch and transmits the request signal to the Intelligent Key. And then, checks that the Intelligent Key is near the door.
• If the Intelligent Key is within the outside key antenna detection area, it receives the request signal and transmits the key ID signal to the BCM via remote keyless entry receiver.
• BCM receives the key ID signal and compares it with the registered key ID.
• BCM sends the door lock/unlock signal and sounds Intelligent Key buzzer warning (lock: 2 times, unlock: 1 time) at the same time as a reminder.
• With the doors locked, when either door request switch is pressed, that door is unlocked. When the same request switch is pressed again within 60 seconds, all doors and trunk are unlocked.
• With door(s) unlocked, when either door request switch is pressed, all doors and trunk are locked.

OPERATION CONDITION

If the following conditions are not satisfied, door lock/unlock operation is not performed even if the request switch is operated.

*: Even with a registered Intelligent Key remaining inside the vehicle, door locks can be unlocked from outside of the vehicle with a spare Intelligent Key as long as key IDs are different.

OUTSIDE KEY ANTENNA DETECTION AREA

The outside key antenna detection area of door lock/unlock function is in the range of approximately 80 cm (31. 50 in) surrounding the driver and passenger door handles (1).

SELECTIVE UNLOCK FUNCTION

When an LOCK signal is sent from door request switch (driver side or passenger side), all doors will be locked.

When an UNLOCK signal is sent from door request switch (driver side or passenger side) once, driver's door will be unlocked.

Then, if an UNLOCK signal is sent from door request switch (driver side and passenger side) again within 60 seconds, all other door will be unlocked.

HAZARD AND BUZZER REMINDER FUNCTION

During lock, unlock, or trunk opening operation by each request switch, the hazard warning lamps and Intelligent Key warning buzzer will blink or honk as a reminder.

When doors are locked, unlocked by each request switch, IPDM E/R honks Intelligent Key warning buzzer as a reminder and transmits hazard request signal to BCM via CAN communication line.

BCM flashes hazard warning lamps as a reminder.

Operating function of hazard warning lamps and buzzer reminder

How to change hazard and buzzer reminder mode

AUTO DOOR LOCK FUNC

When all doors are locked, ignition switch is in OFF position and key switch is OFF (Intelligent Key is not inserted in key slot), doors are unlocked with door request switch When BCM does not receive the following signals within 60 seconds, all doors are locked.

• Door switch is ON (door is opened)
• Door is locked
• Ignition switch is ON (ignition switch is pressed)
• Key switch is ON (Intelligent Key is inserted in key slot)

Auto door lock mode can be changed by "AUTO LOCK SET" mode in "WORK SUPPORT". Refer to DLK-53, "INTELLIGENT KEY : CONSULT Function (BCM - INTELLIGENT KEY)".

ROOM LAMP OPERATION

When the following conditions are met:

• Condition of interior lamp switch is in DOOR position
• Door switch OFF (all the doors are closed)

Intelligent Key system turns on interior lamp (for up to 30 seconds maximum) by receiving UNLOCK signal from door request switch. For detailed description, refer to DLK-17, "DOOR LOCK AND UNLOCK SWITCH : System Description".

LIST OF OPERATION RELATED PARTS

Parts marked with × are the parts related to operation.

DOOR REQUEST SWITCH : Component Parts Location

1. Horn (low) E215 (view with front fender protector LH removed)
2. Horn (high) E216
3. IPDM E/R E17, E18
4. Horn relay H-1
5. Intelligent Key warning buzzer E28
6. Remote keyless entry receiver M27 (view with instrument panel removed)
7. Combination meter M24
8. BCM M16, M17, M18, M19, M20, M21 (view with instrument panel removed)
9. Stop lamp switch E38
10. Push button ignition switch M38 11. Key slot M40
11. CVT shift selector (park position switch (Intelligent Key system)) M78
12. Front console antenna M41 (view with center console assembly removed)
13. Front outside handle LH (outside key antenna) D6
    Front outside handle RH (outside key antenna) D106
14. Front outside handle LH (request switch) D15
    Front outside handle RH (request switch) D115
15. Front door lock assembly LH (door unlock sensor) D10
16. Front door switch LH B8 RH B108
17. Rear door switch LH B18 RH B116
18. Rear parcel shelf antenna B29
19. Trunk opener request switch T5
20. Rear bumper antenna B46
21. Trunk lamp switch and trunk release solenoid T7

DOOR REQUEST SWITCH : Component Description

INTELLIGENT KEY

INTELLIGENT KEY : System Diagram

INTELLIGENT KEY : System Description

The Intelligent Key has the same functions as the remote control entry system. Therefore, it can be used in the same manner as the remote controller by operating the door lock/unlock button.

OPERATION DESCRIPTION/DOOR LOCK/UNLOCK FUNCTION

• When door lock/unlock button of the Intelligent Key is pressed, lock signal or unlock signal is transmitted from Intelligent Key to BCM via remote keyless entry receiver.
• When BCM receives the door lock/unlock signal, it operates door lock actuator, flashes the hazard lamp (lock: 2 times, unlock: 1 time) and horn chirp signal to IPDM E/R at the same time as a reminder.
• IPDM E/R honks horn (lock: 1 time) as a reminder.

OPERATION CONDITION

OPERATION AREA

• Operating Range
• To ensure the Intelligent Key works effectively, use within 80 cm (31. 50 inch) range of each doors, however the operable range may differ according to surroundings. The remote control operation range is greater than that of the Intelligent Key. Refer to Owner's Manual for more details.

SELECTIVE UNLOCK FUNCTION

When a LOCK signal is transmitted from Intelligent Key, all doors will be locked.

When an UNLOCK signal is transmitted from Intelligent Key once, driver's door will be unlocked.

Then, if an UNLOCK signal is transmitted from Intelligent Key again within 5 seconds, all other doors will be unlocked.

HAZARD AND HORN REMINDER FUNCTION

When doors are locked or unlocked by Intelligent Key, BCM flashes hazard warning lamps as a reminder and sends horn chirp signal to IPDM E/R. IPDM E/R sounds horn as a reminder.

The hazard and horn reminder has a horn chirp mode (C mode) and a non-horn chirp mode (S mode).

Operating function of hazard and horn reminder

Hazard and horn reminder does not operate if any door switch is ON (any door is OPEN).

How to change hazard and horn reminder mode

With CONSULT

Without CONSULT

Refer to Owner's Manual for instructions.

AUTO DOOR LOCK FUNCTION

Auto Door Lock Function

When all doors are locked, ignition switch is OFF (ignition switch is not pressed) and key switch is OFF (Intelligent Key is not inserted in key slot), doors are unlocked with Intelligent Key button. When BCM does not receive the following signals within 60 seconds, all doors are locked.

• Door switch is ON (door is opened)
• Door is locked
• Ignition switch is ON
• Key switch is ON (Intelligent Key is inserted in key slot)

Auto door lock mode can be changed by DOOR LOCK-UNLOCK SET mode in "WORK SUPPORT".

PANIC ALARM FUNCTION

When ignition switch is OFF (ignition switch is not pressed) and key switch is OFF (Intelligent Key is not inserted in key slot), BCM receives PANIC ALARM signal from Intelligent Key.

BCM turns on and off headlamp intermittently and transmits theft warning horn signal to IPDM E/R. Then, IPDM E/R turns on and off horn intermittently.

The headlamp flashes and the horn sounds intermittently.

The alarm automatically turns off:

• After 25 seconds
• When BCM receives any signal from Intelligent Key
• When BCM receives any signal from driver or passenger request switch with Intelligent Key in range Panic alarm function mode can be changed by PANIC ALARM SET mode in "WORK SUPPORT".

KEYLESS POWER WINDOW DOWN (OPEN) FUNCTION

Front power windows (with left and right front power window anti-pinch system) open when the unlock button on Intelligent Key is activated and kept pressed for more than 3 seconds with the ignition switch OFF. The windows keep opening if the unlock button is continuously pressed.

The power window opening stops when the following operations are performed:

• When the unlock button is kept pressed more than 15 seconds.
• When the ignition switch is turned ON while the power window opening is operated.
• When the unlock button is released.

  While retained power operation activates, keyless power window down (open) function cannot be operated

Keyless power window down operation mode can be changed by PW DOWN SET mode in "WORK SUPPORT".

ROOM LAMP ILLUMINATION OPERATION

When the following conditions are met:

• Condition of interior lamp switch is in DOOR position
• Door switch OFF (all the doors are closed)

Intelligent Key system turns on interior lamp (for 15 seconds) by receiving UNLOCK signal from Intelligent Key. For detailed description

LIST OF OPERATION RELATED PARTS

Parts marked with × are the parts related to operation.

INTELLIGENT KEY : Component Parts Location

1. Horn (low) E215 (view with front fender protector LH removed)
2. Horn (high) E216
3. IPDM E/R E17, E18
4. Horn relay H-1
5. Intelligent Key warning buzzer E28
6. Remote keyless entry receiver M27 (view with instrument panel removed)
7. Combination meter M24
8. BCM M16, M17, M18, M19, M20, M21 (view with instrument panel removed)
9. Stop lamp switch E38
10. Push button ignition switch M38
11. Key slot M40
12. CVT shift selector (park position switch (Intelligent Key system)) M78
13. Front console antenna M41 (view with center console assembly removed)
14. Front outside handle LH (outside key antenna) D6
    Front outside handle RH (outside key antenna) D106
15. Front outside handle LH (request switch) D15
    Front outside handle RH (request switch) D115
16. Front door lock assembly LH (door unlock sensor) D10
17. Front door switch LH B8 RH B108
18. Rear door switch LH B18 RH B116
19. Rear parcel shelf antenna B29
20. Trunk opener request switch T5
21. Rear bumper antenna B46
22. Trunk lamp switch and trunk release solenoid T7

INTELLIGENT KEY : Component Description