Honda Pilot: Keyless Access System Description - Control/Function

Smart Entry Function

The keyless access/TPMS control unit detects the input signal of the door outer handle touch sensors, the door outer handle lock switches, the tailgate outer handle switch, and the tailgate lock switch, and authenticates 2-way communication with the remote. Then the keyless access/TPMS control unit sends a door lock/unlock signal and an answer back signal to the MICU via the B-CAN.

Refer to the symptom troubleshooting information for the pattern of indicator and the checking method of the system.

Keyless Entry Function

The keyless access/TPMS control unit receives keyless transmitter signal from the remote, and authenticates the RF signal. Then the keyless access/TPMS control unit sends a door lock/unlock signal and tailgate release signal* to the MICU via the B-CAN.

*: Without power tailgate

Remote Search Function

Determine if the remote is present inside the vehicle during operation.

Lighting and Indicator Function

The keyless access/TPMS control unit controls the engine start/stop switch indicator, displays information in the multi-information display (MID), and illuminates the keyless access indicators in the gauge control module.

Backup Communication Function

When key authentication between the remote and the keyless access/TPMS control unit 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 engine start/stop switch button once and bringing the remote close to the engine start/stop switch while the indicator of the engine start/stop switch is flashing. This causes the built-in immobilizer receiver of the engine start/stop switch to receive the immobilizer signal and to send the immobilizer signal to the keyless access/TPMS control unit.

Remote Engine Start System

Start The Engine

The remote engine start feature is initiated by first pressing the lock button, then pressing and holding the "ENGINE" button within 5 seconds on the remote transmitter.

An RF signal from the remote transmitter is received by the keyless access/TPMS control unit, which then sends the request to start the engine to the PCM. At the same time, the keyless access/TPMS control unit authenticates the key for the immobilizer system.

The PCM starts the engine and sends feedback to the keyless access/TPMS control unit indicating the status of the engine.

The keyless access/TPMS control unit disables the headlights and windshield wipers via the B-CAN and an IG1 REM signal to the MICU. The keyless access/TPMS control unit also disables the power windows, door locks and the gauge control module illumination by sending a signal over the B-CAN to all related control units.

Remote Engine Start Link

When the engine is started by the remote, the climate control unit and the power seat control unit are activated through the keyless access/TPMS control unit via the B-CAN. Then the climate control unit activates the ventilated seat control unit, the heated windshield wiper area system, and the rear window and power mirror defoggers via the B-CAN.

Key Lockout Prevent Function

The keyless access/TPMS control unit 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 or tailgate with the remote in the vehicle, the MICU energizes the driver's door lock actuator and unlocks the driver's door.

Electric Steering Lock (Canada and Mexico Models)

The electric steering lock control unit is built into the electric steering lock, and it controls the steering lock motor. When the remote code is identified, the electric steering lock control unit unlocks the steering lock by controlling the steering lock motor.

Immobilizer Function

The immobilizer function uses the GEN 5/GEN 6 protocol, and the immobilizer function is deactivated by mutual communication between the keyless access/TPMS control unit, the PCM, and the MICU via the S-NET.

Alarm Function

Detects the door open or close with the vehicle in the ACCESSORY/ON mode. When the remote is taken out of the vehicle, keyless buzzer will sound and multi-information display (only at the vehicle in the ON mode) will show a warning. Before the remote battery level falls to the point where the remote cannot be detected, The multi-information display (MID) will show a warning and an alarm will sound. Command to display shift to P warning should be transmitted via B-CAN.

Registration Facility

The keyless access/TPMS control unit can store up to 6 remotes with the HDS.

Fault Diagnosis Function

The system has a fault diagnosis function. If any malfunction occurs, the keyless access indicator comes on in the gauge control module.

Client Emergency

When the engine start/stop switch button is pressed quickly 2 times or held for 1.5 seconds in an emergency while driving, the engine turns off, and the vehicle mode switches to ACCESSORY. In this mode, the steering wheel remains unlocked (with steering lock).

Panic Function

When you press the PANIC button on the remote, the keyless access/TPMS control unit sends a signal to the MICU via the B-CAN to sound the horn and activate the exterior lights.

Walk Away Auto Lock Function

This system is equipped depending on specifications.

The walk away auto lock system 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, all the following conditions must be met:

• The vehicle is in OFF(LOCK) mode
• Any door is closed, and then all the doors become closed.
• The remote is not inside of the vehicle.
• The remote is outside and within 2m of the vehicle.

The vehicle's buzzer beeps once to confirm that the auto lock mode is engaged.

After the auto lock mode is engaged and the remote is away more than 2m from the vehicle for 2 or more seconds, 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.

After the auto lock mode is engaged, if remote is within 2m from the vehicle for 30 seconds or more, the doors automatically lock.

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

• The remote is inside of the vehicle
• Any door is closed when the remote is away more than 2m from the vehicle.
• Any door is opened after the auto lock mode is engaged.

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

• The remote is away more than 2m from the vehicle while closing the power tailgate.
• A communication error occurs between the remote and the vehicle.

The walk away auto lock system can be cancelled temporarily by customization.

Keyless Access System Description - Overview

Keyless Access System

The keyless access system enables you to lock/unlock the doors and the tailgate remotely. The keyless access system uses the LF- RF communication system. It sends the LF signal via the LF antenna, and the keyless access/TPMS control unit receives the RF signal from the remote.

Some models come equipped with the remote engine start system.

*: With keyless access function

*: With rear keyless access function

Keyless Access System Description - System Diagram