Hyundai Equus: Description and Operation

Second generation VI (2009–2024) / Hyundai Equus VI 2009-2024 Service Manual / Body Electrical System / Power Windows / Description and Operation

Function

B+ and Power Window Enable

ECU power ought to be supplied from B+ in order to secure the RAM and its memory.

ECU observes the level of power window enable to decide the state (normal mode, sleep mode). The ECU is allowed to operate the motor with power window enable = On and stop the motor as well as change to the sleep mode with power window enable=Off. However, the reverse by anti-pinch (safety) function ought to be completed regardless of the power window enable on/off.

Self Diagnosis

1)	Checksum error of RAM after Wake-Up

-	S/W reset, De-normalization

2)	Low voltage (Ubat<5V) in operating state

-	S/W reset, De-normalization

3)	Hall sensor direction error except speed hall sensor error(Hardware error, No plausibility between the switch command and rotational direction of the motor)

-	De-normalization, No auto up is allowed.

4)	Normalized and the position value of closing window is 3cm above the previous “0” position

-	Stop the movement, De-normalization

5)	Normalized and the position value of opening window is 5cm above the entire travel

-	Stop the movement, De-normalization

6)	Abnormal behavior of ECU

-	H/W reset by the watch dog control, No movement

7)	No plausibility of Flash ROM data after POR / wake-up

-	Stop the movement, De-normalization

Thermal Protection

Software provides an algorithm in order to prevent the motor from thermal overheating under the specified conditions like the valid Flash ROM Data.

After power on reset, the software thermal counter starts to count from the initial value. In case of motor running, software increases the thermal counter by using the motor heating characteristic, otherwise the thermal counter decreases by using the motor cooling characteristic.

There exist 2 thermal protection limits. If the software thermal counter is over the first limit, the motor movement stops until the software thermal counter decrease to the release limit temperature value, but still allows the current movement to finish. If the software thermal counter is over the second limit (while motor running), the movement stops at once until the release temperature value is reached (reversing will not be interrupted by software thermal protection).

Voltage supply = 13.5 V

Load = 3 N.m

Temperature = 23°C± 5°C

The motor is able to continue to operate at least “15” cycles without a break under the above conditions and after thermal protection is activated, the motor turns to the operational condition within “35±5” seconds.

Test starts with SW-thermal counter at the initial value.

Cycle: Full closed > 1sec. rest > Full opened > 1sec. rest

2nd heating limit > 1st heating limit

Normalization

After power on reset or error detection, the motor has to be normalized at the fully closed position. How to be normalized:

•	Move the window upwards into the fully closed position. As the window reaches the fully closed position, hold the power window switch in auto for t x tblock. If the block is recognized, the system state turns to normalized.

Block Control

“tblock” time is defined as the time duration that the system does not receive the valid hall sensor pulse while motor ON. When the system doesn’t detect the hall sensor pulse for tblock = 200ms ± 10ms the software recognizes the window state as a block and terminates the motor or carries out the reverse operation by anti-pinch (safety) function.

In case of the block detection within the anti-pinch (safety) function range, the system will act on the anti-pinch function.

Power Window Switch And Stuck Filter

The permanent active power window switches (input up and down) are ignored by software after input levels are active for t x (20 ± 0.4) sec.

Manual Up

2.	Manual Down

3.	(Panic) Automatic Up

4.	Automatic Down

Reverse Control By Anti-pinch (Safety) Function

When the safety function is active, ECU stops all sort of auto-up function at once and executes the reverse as mentioned below. Measuring manner of the reverse distance: Along the B-pillar (Refer to the next picture)

Panic Mode

Switch state	Switch state when safety is active	Window operation	Next switch input / window operation state			Next switch input
			Next input comes after	Switch state	Window operation
Express Up	Hold switch (Express up)	Safety active position + “L”	x t x 5 sec	2nd stage (Auto up)	Manual Up	Inhibit Panic mode
				2nd stage (Auto down)	Auto Down
			x t x 5 sec	2nd stage (Auto up)	Inhibit Panic mode
				2nd stage (Auto down)
	Neutral	Full reverse

“L”: Panic reverse distance (25mm)

Auto Up

Reverse distance

A.	Anti-pinch function occurs < 250mm: ~300mm from top rubber seal

B.	Anti-pinch function occurs > 250mm: Approx. 50mm from the position where the anti-pinch function becomes activated. A: Measure of reverse distance Measure according to leaning angle of B-pillar frame.

Reverse Operation Range

Type A: 4mm ~ a mm (Maximal travel – 100mm)

a: Front (about 346mm), Rear (about330mm)

the range of 4mm ~ 300mm, Safety function follows the regulation.

Measuring The Anti-pinch Force

Measuring tool: Diameter 25mm, 50mm and 200mm semi-rigid cylindrical bar (10N/mm stiffness)

Measuring method:

-	Put the semi-rigid bar described above into the space between the door frame and window edge and measure the pinching force from the point where the bar first contacts with the window.

-	There exists no semi-rigid bar measurement tool at present, so that a commonly used measuring tool is employed here. However, a special care should be taken to prevent the measuring tool from moving back and forth, for example, holding the tool by both hands and fix on the glass or on the frame.

-	The ECU shall reverse the window before it exerts a pinch force mentioned in the regulation

No rattling and swinging of the measurement kit on the window during the measuring

Denormalization

Under conditions below, ECU turns to denormalized status. After denormalization, auto up and safety function shall not be operated. In order to make these function active again, ECU should go through the normalization process illustrated in chapter 4.4.

Denormalization conditions:

1)	Continuous 15 times reverses

2)	Power off during motor operation

Driver side door opened and window glass is at the bottom(hard stop position) with IGN on, IGN Off x> within Tsec(BH: 2sec,VI:5sec), IGN On x> Manual Down switch signal input 3 times within 5sec x> De-normalization(If IGN off>on is not fulfilled within 2sec or manual down switch signal is not inputted within 5sec then repeat again this cycle)

Door and Glass Status	IGN Status	Input Time	IGN Status	Switch Input Status			Switch Input Times	Normalizati on Status
				Re-input time	IGN Status	Switch Input
Driver side door opened, Window glass is bottom with IGN on(Hard stop)	IGN Off	DtxTsec BH:2secVI:5sec	IGN On	x t x 5sec	IGN On	Press and release Manual down switch	3times	De-normalization

Sleep Mode

Conditions:

1)	Thermal counter decreases to the initial value

EN = Off

3)	(10±0.4) passed since the last movement

Depending on the value of thermal counter, the system turns to the sleep mode after “10” minutes with ignition = off.

Wake-up

Conditions:

1)	Hardware reset

EN = On

Rear Door Curtain Control

Condition:

1)	System reset (Refer to 4.4)

EN = On

Window State

WDW state	Closed	Not Closed
Signal	Low	High

If above condition is not satisfied, Window State Output is HIGH.

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