System Description
REMOTE KEYLESS ENTRY SYSTEMSystem Description
INPUTS
Power is supplied at all times
- through 40 A fusible link (letter F, located in the fuse and fusible link box)
- to BCM terminal 55,
- through 10 A fuse [No.18, located in the fuse block (J/B)]
- to BCM terminal 42,
- through 10 A fuse [No. 21, located in the fuse block (J/B)]
- to key switch terminal 2.
When the ignition switch is ON or START position, power is supplied
- through 10 A fuse [No.1, located in the fuse block (J/B)]
- to BCM terminal 38.
When the ignition switch is ACC or ON position, power is supplied
- through 10 A fuse [No. 6, located in the fuse block (J/B)]
- to BCM terminal 11.
Ground is supplied
- to BCM terminal 52
- through body grounds M30 and M66.
When the driver side door switch is ON (door is OPEN), ground is supplied
- to BCM terminal 62
- through driver side door switch terminal 1 and
- through driver door switch case ground.
When the passenger side door switch is ON (door is OPEN), ground is supplied
- to BCM terminal 12
- through passenger side door switch terminal 1 and
- through passenger side door switch case ground.
When the back door switch (For coupe models) is ON (door is OPEN), ground is supplied
- to BCM terminal 58
- through the back door switch terminals 1 and 3 and
- through body grounds B5, B6, D105 and T14.
When the trunk room lamp switch (For roadster models) is ON (trunk is OPEN), ground is supplied
- to BCM terminal 57
- through the trunk room lamp switch terminals 1 and 2 and
- through body grounds B5,B6 and T14.
When the key switch is ON (key is inserted in ignition key cylinder), power is supplied
- through key switch terminal 1
- to BCM terminal 37.
Key fob signal is inputted to remote keyless entry receiver (the antenna of the system is built in remote keyless entry receiver).
Remote keyless entry receiver sends keyfob signal
- to BCM terminal 20
- from remote keyless entry receiver terminal 2.
The remote keyless entry system controls operation of the
- power door lock
- hazard and horn reminder
- auto door lock
- interior lamp and step lamp
- panic alarm
- back door opener (For coupe)
- trunk lid opener (For roadster)
- keyless power window down (open)
OPERATION PROCEDURE
Power Door Lock Operation
BCM receives a LOCK signal from key fob. BCM locks all doors receiving of LOCK signal from key fob. When an UNLOCK signal is sent from key fob once, driver's door will be unlocked.
Then, if an UNLOCK signal is sent from key fob again within 5 seconds, all other doors will be unlocked.
Hazard Reminder
When the doors are locked or unlocked by key fob, power is supplied to hazard warning lamp and it flashes as follows
- LOCK operation: C mode (flash twice) or S mode (flash twice)
- UNLOCK operation: C mode (flash once) or S mode (does not flash)
Horn Reminder
BCM output to IPDM E/R for horn reminder signal as DATA LINE (CAN H line and CAN L line).
The horn reminder has C mode (horn chirp mode) and S mode (non-horn chirp 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-II
Hazard and horn reminder can be changed using "WORK SUPPORT" mode in "MULTI ANSWER BACK SET". Refer to "Work Support".
Without CONSULT-II
When LOCK and UNLOCK signals are sent from the key fob for more than 2 seconds at the same time, the hazard and horn reminder mode is changed and hazard warning lamp flashes and horn sounds as shown.
Auto Door Lock Operation
Auto lock function signal is sent for operation when any of the following signals are not sent within 1 minute after the unlock signal is sent from the key fob:
- when door switch is turned ON for open.
- when the key switch is turned ON.
- when the lock signal is sent from the key fob.
Auto door lock mode can be changed using "WORK SUPPORT" mode in "AUTO LOCK SET". Refer to "Work Support".
Interior Lamp and Step Lamp Operation
When the following conditions come:
- condition of interior lamp switch is DOOR position;
- door switch OFF (when all the doors are closed);
Remote keyless entry system turns on interior lamp (for 30 seconds) with input of UNLOCK signal from key fob.
For detailed description, refer to "MAP LAMP TIMER OPERATION".
Panic Alarm Operation
When key switch is OFF (when ignition key is not inserted in key cylinder), BCM turns on and off horn and headlamp intermittently with input of PANIC ALARM signal from key fob.
The alarm automatically turns off after 25 seconds or when BCM receives any signal from key fob.
For detailed description, refer to "PANIC ALARM OPERATION".
Back Door Operation/For Coupe
When a BACK DOOR OPEN signal is sent with key OFF (ignition key removed from key cylinder) from key fob, power is supplied through BCM terminal 19.
When power and ground are supplied, back door opener actuator opens back door.
Trunk Opener Operation/For Roadster
When a TRUNK OPEN signal is sent with key OFF (ignition key removed from key cylinder) from key fob, power is supplied through BCM terminal 19.
When power and ground are supplied, trunk lid opener actuator opens trunk.
Keyless Power Window Down (open) Operation
When key fob unlock switch is turned ON with ignition switch OFF, and key fob unlock switch is detected to be on continuously for 3 seconds, 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 key fob unlock switch is pressed.