Interior Lights System Description - Control/Function - Honda Civic FC/FK 2016-2021

Interior Lights System Description - Control/Function

System Function

Initial state of connection of electric power supply

In the initial state of connection of electric power supply, close/open of each door is detected and controlled without being affected by states of the vehicle mode and the driver's door lock knob switch.

Input		Output Control
Each Door Switch	Vehicle Mode	Before Input Change	After Input Change
Any ON (Door open)	ACCESSORY or ON	??	Lights ON
Any ON (Door open)	OFF (LOCK)	??	Lights ON by timer condition 3
All OFF (Door close)	??	??	Lights OFF

NOTE: The "??" means that it is not used on this system.

Driver's door lock knob switch link

When the driver's door lock knob switch moves from the lock/unlock position, the body control module detects a driver's door open/close position, and controls the interior lights.

Input			Output Control
Driver's Door Lock Knob Switch (ON: LOCK)	Each Door Switch	Vehicle Mode	Before Input Change	After Input Change
ON ? OFF	All OFF (Door close)	Remote Engine Start	Lighting ON	Lights ON by timer condition 1
		Remote Engine Start	Lighting OFF	Lights ON by timer condition 5
		OFF (LOCK)	Lighting ON	Lights ON by timer condition 1
		OFF (LOCK)	Lighting OFF	Lights ON by timer condition 5
		ACCESSORY	??	Continue the status before input change
	Any ON (Door open)	OFF (LOCK) or ACCESSORY	??	Continue the status before input change
OFF? ON	All OFF (Door close)	Remote Engine Start	??	Lights OFF
	All OFF (Door close)	OFF (LOCK) or ACCESSORY	??	Lights OFF
	Any ON (Door open)	OFF (LOCK) or ACCESSORY	??	Continue the status before input change

NOTE: The "??" means that it is not used on this system.

Each door switch link

Anytime a door switch closes (ON signal), the body control module provides a ground to the interior lights.

Input			Output Control
Each Door Switch	Driver's Door Lock Knob Switch (ON: LOCK)	Vehicle Mode	Before Input Change	After Input Change
Any ON (Door open) ? All OFF (Door close)	OFF	Remote Engine Start	Lighting ON	Lights ON by timer condition 2
		Remote Engine Start	Lighting OFF	Continue the status before input change
		OFF (LOCK)	Lighting ON	Lights ON by timer condition 2
		OFF (LOCK)	Lighting OFF	Continue the status before input change
		ACCESSORY or ON	??	Lights OFF
	ON	??	??	Lights OFF
Any OFF (Door close) ? ON (Door open)	??	Remote Engine Start	Lighting ON	Lights ON by timer condition 3 (Timer restart)
		Remote Engine Start	Lighting OFF	Lights ON by timer condition 3
		OFF (LOCK)	Lighting ON	Lights ON by timer condition 3 (Timer restart)
		OFF (LOCK)	Lighting OFF	Lights ON by timer condition 3
		ACCESSORY or ON	??	Lights ON

NOTE: The "??" means that it is not used on this system.

Ignition key switch/Remote link

When the system detects that the key is inserted into the ignition key switch or the remote is inside the vehicle, it provides a ground to the interior lights.

Input		Output Control
Vehicle Mode	Each Door Switch	Before Input Change	After Input Change
ACCESSORY ? OFF (LOCK)	All Door Switch OFF (Close)	Lighting ON	Lights ON by timer condition 1
	All Door Switch OFF (Close)	Lighting OFF	Lights ON by timer condition 5
	Any Door Switch ON (Open)	??	Lights ON by timer condition 3
OFF (LOCK) ? ACCESSORY	All Door Switch OFF (Close)	??	Continue the status before input change
OFF (LOCK) ? ACCESSORY	Any Door Switch ON (Open)	??	Lights ON

NOTE: The "??" means that it is not used on this system.

Engine start/stop switch link

If the vehicle mode turns to the ACCESSORY mode or the ON mode with the doors closed and the entry light control system illuminating the start/stop switch lights, the body control module fades the lights off.

Input		Output Control
Vehicle Mode	Each Door Switch	Before Input Change	After Input Change
Remote Engine Start	All OFF	??	Lights OFF
Remote Engine Start	Any ON	??	Lights ON by timer condition 3
ON ? ACCESSORY	??	??	Continue the status before input change
ACCESSORY ? ON	All OFF	??	Lights OFF
ACCESSORY ? ON	Any ON	??	Lights ON
ON	All OFF	??	Lights OFF
ON	Any ON	??	Lights ON

NOTE: The "??" means that it is not used on this system.

Keyless link

When the body control module receives an unlock signal from the keyless transmitter or remote, it provides a ground to the interior lights.

Input			Output Control
Keyless Door LOCK/ UNLOCK Signal	Each Door Switch	Driver's Door Lock Knob Switch (ON: LOCK)	Before Input Change	After Input Change
UNLOCK signal	All OFF (Door close)	ON ? OFF or OFF	??	Lights ON by timer condition 4
	All OFF (Door close)	ON	??	Continue the status before input change
	Any ON (Door open)	??	??	Lights ON by timer condition 3
LOCK signal	All OFF (Door close)	OFF ? ON or ON	??	Lights OFF
	All OFF (Door close)	OFF	??	Continue the status before input change
	Any ON (Door open)	??	??	Continue the status before input change

NOTE: The "??" means that it is not used on this system.

Timer Control

The chart shows lighting duration, along with the dimming function that occurs at the end of the timer period.

Tailgate Link Control (5-door)

The body control module controls the cargo area light ON/OFF based on the tailgate latch signal.