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Home >> Honda >> 2019 >> Clarity Plug-In Hybrid >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Security System / Keyless Entry System - Testing & Troubleshooting - (Plug-In) >> System Description >> Keyless Access
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Keyless Access

Smart Entry Function 

The body control module detects the input signal of the door outer handle touch sensor, the outer handle lock switch, or the trunk lid.

outer handle switch, and authenticates 2-way communication with the remote. The body control module then activates the door

lock/unlock actuator or trunk lid opener solenoid and provides an answer back signal.

For details on the illumination patterns of the warning lights and the functional check of the system, refer to keyless access system symptom troubleshooting information 

GHH420386Courtesy of HONDA, U.S.A., INC.

Smart Entry Answer Back 

Lock 

When the body control module receives a lock signal by the smart entry function, it sends a signal to the turn signal lights and the keyless buzzer sounds.

GHH420387Courtesy of HONDA, U.S.A., INC.

Unlock 

When the body control module receives an unlock signal by the smart entry function, it sends a signal two times to the turn signal lights and the keyless buzzer sounds.

GHH420388Courtesy of HONDA, U.S.A., INC.

Keyless Access System Operation Manual Customize 

The keyless access system can be enabled and disabled by the operation shown in the table. The system is enabled and disabled

each time the unlock button is pressed on the remote in the customize mode.

GHH420389Courtesy of HONDA, U.S.A., INC.

Backup Communication Function (Immobilizer Function) 

When key authentication between the remote and the body control module is not possible because of a system abnormality or a drop

of the battery voltage of the remote, the immobilizer function can be canceled by pressing the power switch once and bringing the

remote close to the power switch while the light of the power switch is flashing. This allows the immobilizer signal to be sent to the

body control module.

GHH420390Courtesy of HONDA, U.S.A., INC.

Remote Search Function 

Determines if the remote is present inside the vehicle. When the remote is taken out of the vehicle, the gauge control module will show a warning.

Lighting and Indicator Function 

The body control module controls the power switch light, displays information in the multi-information display (MID), and illuminates

the security indicators in the gauge control module.

Key Lockout Prevent Function 

The body control module monitors whether or not there is the remote in the vehicle. If the remote is in the vehicle, the system will not

lock the doors. If the driver manually locks and closes the doors with the remote in the vehicle, the body control module energizes the

driver's door lock actuator and unlocks the driver's door. When the trunk is closed with the remote left in the trunk, the body control

module detects the location of the remote unit and does not lock the trunk.

GHH420391Courtesy of HONDA, U.S.A., INC.

Registration Facility 

The body control module can store up to 6 remotes with the HDS.

Alarm Function 

Detects if the doors are opened or closed with the vehicle in the ACCESSORY/ON mode. When the remote is taken out of the

vehicle, the keyless buzzer will sound and the gauge control module (only when the vehicle is in the ON mode) will show a warning.

Before the remote battery level falls to the point where the remote cannot be detected, the gauge control module will show a warning

and an alarm will sound.

Customer Emergency 

When the power switch is pressed continuously at least three times or is held for 1.5 seconds or longer in an emergency while driving,

the vehicle will turn to the ACCESSORY mode, and the gear position/mode changes automatically to the N position/mode. When the

vehicle speed becomes slow, the gear position/mode automatically changes to the P position/mode, and the vehicle will turn to the

OFF (LOCK) mode.

Immobilizer Function 

The immobilizer function provides mutual authentication between the body control module, the PCM, and the VSA modulator-control

unit when the vehicle is turned to the ON mode. The engine stays running after start-up if the immobilizer signal matches. The body

control module authenticates the VSA modulator-control unit and the immobilizer signal only one time when the vehicle is turned to

the ON mode after reconnecting the battery, removal and installation of the back-up fuse, or removal and installation of the VSA

modulator-control unit.

For some model*, the brake pedal must be depressed to perform the immobilizer authentication.

*: Canada model

GHH420392Courtesy of HONDA, U.S.A., INC.

Panic Function 

When you press the PANIC button on the remote, the body control module sounds the horn and activates the exterior lights.

Walk Away Auto Lock Function 

The walk away auto lock function detects where the remote is and locks all doors on the vehicle when all the doors are closed and the

remote is outside of the vehicle and out of the range.

To operate the walk away auto lock system, it is necessary to enter the auto lock mode. To enter the auto lock mode, the following

conditions must be met:

Once the system enters the auto lock mode, the vehicle's buzzer beeps sound once.

After the auto lock mode is engaged and the remote is away more than 1.5 m (5 ft) from the vehicle for 2 sec. or more, all the doors

become locked. At that time, the vehicle's buzzer beeps once and some exterior lights blink once to confirm that the walk away lock

system is engaged.

However, if the remote is within 1.5 m (5 ft) from the vehicle for 30 sec. or more, the doors automatically lock.

The walk away auto lock system does not work under the following conditions:

The walk away auto lock system does not work and the vehicle's buzzer beeps under the following conditions:

Remote Climate Control Operation 

This function is used to operate the climate control unit remotely from outside the vehicle by using the remote. The remote climate

control operation is initiated by first pressing the lock button, then pressing and holding the AUTO A/C button on the remote within 5

sec. The A/C signal from the remote is received by the RF antenna and is sent from the body control module to the climate control

unit via the B-CAN to activate the climate control. The turn signal lights will blink to confirm that the vehicle condition has changed.

Pressing and holding the AUTO A/C button on the remote during the remote climate control operation stops the operation.

The remote climate control operation can be activated and deactivated under the following conditions.

Operation start conditions: 

Operation stop conditions: 

If the above deactivation conditions are not met, climate control stops in 30 min. with timer control.

Failsafe Function 

If there is a failure in the keyless access system that terminates the keyless access features, the system enters the failsafe mode and displays the keyless access indicator.