Fall-down Detection Function

This function prevents the tailgate from suddenly falling down because of an accumulation of snow, or other causes. If the pulser in the drive unit detects abnormal pulses, the tailgate starts to open. If this operation is activated twice, the tailgate will close automatically. If the obstruction detection function detects any obstruction several times during this fall-down detection function, the tailgate stops moving.

NOTE: If the tailgate falls repeatedly, replace the tailgate support strut (see TAILGATE SUPPORT STRUT REPLACEMENT ).

Auto open action completed
Tailgate falling is detected
Clutch reconnect when falling is detected
Auto open action (power tailgate motor reverse action)
Close function activated from fully open position

Fig 1: Fall-down Detection Function Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

POWER TAILGATE BUZZER BEEP PATTERN

Condition	Beep Pattern
When the tailgate starts to open automatically	Beeps 1 time
When the tailgate starts to close automatically	Beeps 1 time
When the reverse operation is started after the tailgate has detected any obstruction	Beeps 3 times
When reverse operation is started by switch operation	Beeps 3 times
When vehicle speed exceeds 1.2 mph (2 km/h) while the tailgate is opening automatically	Beeps 3 times
When the shift lever is shifted to any position other than P while the tailgate is closing automatically	Beeps 3 times
When the fail-safe is detected (other than the neutral switch, the release switch, the ratchet switch, the full latch switch, or the half latch switch malfunction fail-safe) while the tailgate is operating automatically	Beeps 3 times
When the operating time is over	Beeps 3 times
When vehicle speed exceeds 1.2 mph (2 km/h) while the tailgate is closing automatically	Beeps intermittently until the condition is corrected
When pinch sensor on is detected while the tailgate is closing automatically	Beeps 3 times
When the pinch sensor detects an obstruction while the tailgate is closing automatically	Beeps 3 times
When the tailgate is not fully-latched, and the following condition is met: The shift lever is any position other than P, and the brake pedal position switch and parking brake switch is OFF, and the vehicle speed exceeds 1.2 mph(2 km/h)	Beeps intermittently until the condition is corrected
When the tailgate fall-down detection function is activated	Beeps continuously