Power Locks: Description and Operation

POWER DOOR LOCK SYSTEM

System Description

Power is supplied at all times
- through 50 A fusible link (letter f, located in the fuse and fusible link box)
- to BCM terminal 70 and
- through 10 A fuse [No. 19, located in the fuse block (J/B)]
- to key switch and key lock solenoid terminal 3 (floor shift) or key switch terminal 3 (column shift)
- through 15 A fuse [No. 22, located in the fuse block (J/B)]
- to BCM terminal 57.

With ignition key inserted, power is supplied
- through key switch and key lock solenoid terminal 4 (floor shift) or key switch terminal 4 (column shift)
- to BCM terminal 37.

Ground is supplied to terminal 67 of BCM through body grounds M57, M61 and M79.
When the door is locked or unlocked with main power window and door lock/unlock switch, ground is supplied
- to CPU of main power window and door lock/unlock switch
- through main power window and door lock/unlock switch terminal 15 (King Cab) or 17 (Crew Cab)
- through grounds M57, M61 and M79.

Then main power window and door lock/unlock switch operation signal is supplied.
- to BCM terminal 22
- through main power window and door lock/unlock switch terminal 12 (King Cab) or 14 (Crew Cab).

When the door is locked or unlocked with power window and door lock/unlock switch RH, ground is supplied
- to CPU of power window and door lock/unlock switch RH
- through power window and door lock/unlock switch RH terminal 11
- through grounds M57, M61 and M79.

Then power window and door lock/unlock switch RH operation signal is supplied
- to BCM terminal 22
- through power window and door lock/unlock switch RH terminal 16.

When the door is locked with front door lock assembly LH (key cylinder switch), ground is supplied
- to main power window and door lock/unlock switch terminal 6 (King Cab) or 4 (Crew Cab)
- through key cylinder switch terminals 1 and 5
- through grounds M57, M61 and M79.

Then key cylinder switch operation signal is supplied
- to BCM terminal 22
- through main power window and door lock/unlock switch terminal 12 (King Cab) or 14 (Crew Cab).

When the door is unlocked with front door lock assembly LH (key cylinder switch), ground is supplied
- to main power window and door lock/unlock switch terminal 7 (King Cab) or 6 (Crew Cab)
- through key cylinder switch terminals 6 and 5
- through grounds M57, M61 and M79.

Then key cylinder switch operation signal is supplied
- to BCM terminal 22
- through main power window and door lock/unlock switch terminal 12 (King Cab) or 14 (Crew Cab).

KING CAB
BCM is connected to main power window and door lock/unlock switch and power window and door lock/unlock switch RH through a serial link.

When the front door switch LH is ON (door is open), ground is supplied
- to BCM terminal 47
- through front door switch LH terminals 2 and 3
- through grounds B7 and B19.

When the rear door switch upper LH is ON (door is open), ground is supplied
- to BCM terminal 47
- through rear door switch upper LH terminals 1 and 2
- through grounds B7 and B19.

When the rear door switch lower LH is ON (door is open), ground is supplied
- to BCM terminal 47
- through rear door switch lower LH terminals 1 and 2
- through grounds B7 and B19.

When the front door switch RH is ON (door is open), ground is supplied
- to BCM terminal 12
- through front door switch RH terminals 2 and 3
- through grounds B117 and B132.

When the rear door switch upper RH is ON (door is open), ground is supplied
- to BCM terminal 12
- through rear door switch upper RH terminals 1 and 2
- through grounds B117 and B132.

When the rear door switch lower RH is ON (door is open), ground is supplied
- to BCM terminal 12
- through rear door switch lower RH terminals 1 and 2
- through grounds B117 and B132.

CREW CAB
BCM is connected to main power window and door lock/unlock switch and power window and door lock/unlock switch RH through a serial link.

When the front door switch LH is ON (door is open), ground is supplied
- to BCM terminal 47
- through front door switch LH terminal 2
- through front door switch LH case ground.

When the front door switch RH is ON (door is open), ground is supplied
- to BCM terminal 12
- through front door switch RH terminal 2
- through front door switch RH case ground.

When the rear door switch LH is ON (door is open), ground is supplied
- to BCM terminal 48
- through rear door switch LH terminal 2
- through rear door switch LH case ground.

When the rear door switch RH is ON (door is open), ground is supplied
- to BCM terminal 13
- through rear door switch RH terminal 2
- through rear door switch RH case ground.

OUTLINE
Functions available by operating the door lock and unlock switches on driver's door and passenger's door
- Interlocked with the locking operation of door lock and unlock switch, door lock actuators of all doors are locked.
- Interlocked with the unlocking operation of door lock and unlock switch, door lock actuators of all doors are unlocked.

Functions available by operating the key cylinder switch on driver's door
- Interlocked with the locking operation of door key cylinder, door lock actuators of all doors are locked.
- When door key cylinder is unlocked, front door lock assembly LH is unlocked.
- When door key cylinder is unlocked for the second time within 5 seconds after the first operation, door lock actuators on all doors are unlocked.

Key reminder door system
When door lock and unlock switch is operated to lock doors with ignition key in key cylinder and any door open, all door lock actuators are locked and then unlocked.