Keyless Entry: Description and Operation
REMOTE KEYLESS ENTRY SYSTEMSystem Description
INPUTS
Power is supplied at all times
- to BCM terminal 70
- through 50 A fusible link (letter f, located in the fuse and fusible link box).
- to BCM terminal 57
- through 15 A fuse [No. 22, located in the fuse block (J/B)].
When the key switch and key lock solenoid (floor shift) or key switch (column shift) is ON (inserted), power is supplied
- to BCM terminal 37
- through key switch and key lock solenoid (floor shift) or key switch (column shift) terminals 3 and 4
- through 10 A fuse [No. 19, located in the fuse block (J/B)].
When the ignition switch is in ACC or ON position, power is supplied
- to BCM terminal 11
- through 10 A fuse [No. 4, located in the fuse block (J/B)].
When the ignition switch is in ON or START position, power is supplied
- to BCM terminal 38
- through 10 A fuse (No. 59, located in the fuse and relay box).
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.
Keyfob signal is inputted to BCM from the remote keyless entry receiver.
The remote keyless entry system controls operation of the
- power door lock
- interior lamp and step lamps
- panic alarm
- hazard and horn reminder
- keyless power window down (open)
- auto door lock operation
OPERATED PROCEDURE
- When the keyfob is operated, the signal from the keyfob is sent and the remote keyless entry receiver receives the signal and sends it to the BCM. The BCM only locks/unlocks the doors if the ID number matches. (Remote control entry functions)
- Using the keyfob, the transmitter sends radio waves to the remote keyless entry receiver, which then sends the received waves to the BCM. Only if the ID number matches does the BCM lock/unlock the doors. (Remote control door function)
- Unless the key is inserted into the ignition key cylinder or one of the doors is opened within 1 minute after the UNLOCK switch on the keyfob is pressed, all the doors are automatically locked. (Auto lock function) - When a door is locked or unlocked, the vehicle turn signal lamps flash and the horn sounds to verify operation. (Active check function)
- When the key is in the ignition key cylinder [when the key switch and key lock solenoid (floor shift) or key switch (column shift) is ON (inserted)] and one of the doors is open, the door lock function does not work even when the door lock is operated with the keyfob.
- Keyfob ID set up is available.
- If a keyfob is lost, a new keyfob can be set up. A maximum of 5 IDs can be set up simultaneously.
Remote Control Entry Functions
Operation Description
- When a button on the keyfob is operated, the signal is sent from the keyfob and received by the remote keyless entry receiver.
- The received signal is sent to the BCM and compared with the registered ID number.
- If the ID number matches, the BCM sends the lock/unlock signal to each door lock actuator.
- When the door lock actuators receive this signal, each operates to lock/unlock its door.
- BCM locks all doors with input of LOCK signal from keyfob.
- When an UNLOCK signal is sent from keyfob once, driver's door will be unlocked.
- Then, if an UNLOCK signal is sent from keyfob again within 5 seconds, all other doors will be unlocked.
Remote control entry operation conditions
Auto Lock Function
Operation Description
- Unless the key is inserted into the ignition key cylinder, one of the doors is opened, or the keyfob is operated within 1 minute after a door lock is unlocked by keyfob operation, all the doors are automatically locked.
The 1 minute timer count is executed by the BCM and after 1 minute, the BCM sends the lock signal to all doors.
Lock operations are the same as for the remote control entry function.
Active Check Function
Operation Description
When a door is locked or unlocked by keyfob operation, the vehicle turn signals flash and the horn sounds to verify operation.
- When a button on the keyfob is operated, the signal is sent from the remote controller and received by the keyless remote entry receiver.
- The received signal is sent to the BCM and compared with the registered ID number.
- If the ID number matches, the BCM uses communication to send the turn signal flashing and horn signal to the IPDM E/R.
- The IPDM E/R flashes the turn signal lamps and sounds the horn for each keyfob operation.
Operating function of hazard and horn reminder
Hazard and Horn Reminder
BCM output to IPDM E/R for horn reminder signal as DATA LINE (CAN-H line and CAN-L line).
The hazard and horn reminder has C mode (horn chirp mode) and S mode (non-horn chirp mode).
How to change hazard and horn reminder mode
With CONSULT-II
Hazard and horn reminder can be changed using "WORK SUPPORT" mode in "MULTI ANSWER BACK SET".
Without CONSULT-II
Refer to Owner's Manual for instructions.
Interior Lamp Operation
When the following input signals are both supplied:
- all door switches are in the OFF position (when all the doors are closed) and
- interior lamp switch is in DOOR position.
Remote keyless entry system turns on interior lamp and (for 30 seconds) with input of UNLOCK signal from keyfob.
For detailed description, refer to "ROOM LAMP TIMER OPERATION".
Panic Alarm Operation
When key switch is OFF (when ignition key is removed from the key cylinder), remote keyless entry system turns on and off horn and headlamp intermittently with input of PANIC ALARM signal from keyfob.
The alarm automatically turns off after 25 seconds or when BCM receives any signal from keyfob.
Keyless Power Window Down (open) Operation
When keyfob unlock switch is turned ON with ignition switch OFF, and the switch is detected to be ON continuously for more than 1 second, the driver's door and passenger's door power windows are simultaneously opened.
Power window is operated to open and the operation continues as long as the keyfob unlock switch is pressed.
CAN Communication System Description
Refer to "Information Bus".