Windscreen Wipers
When enabled, this function will allow the control of vehicle windscreen wipers through the use of a Haltech PDM. You will note that the low speed winding is not used, and only the high speed winding is used. Since we can use PWM (Pulse Width Modulation) to control the PDM output pin which is directly connected to the wiper motor, we have complete control of the motor speed.
Wiring Diagram
Pinout:
| Pin | Function |
| A | Low Speed Winding |
| B | High Speed Winding |
| C | Park Switch 12V Supply |
| D | Park Switch Ground |
| E | Park Switch Common |
To differentiate between low speed and high speed winding, use a Multimeter on the resistance setting to probe the pins. High Speed Winding will have a lower resistance than the Low Speed Winding.
Method
To wire the motor up to a PDM:
| Pin | Connection on PDM |
| A | NOT connected |
| B | HBO driving it High to operate the motor |
| C | NOT connected |
| D | Battery Ground |
| E | An Input such as AVI with Pullup Enabled (Active Low) |
Wiring
This page is accessible when Windscreen Wipers function is enabled in Electrical.
Front Low Speed Enable:
Enables an input for the driver to request the wipers to operate in low speed mode.
Front Off Input Enable:
Enables an input for the driver to request the wipers to stay in park position.
Front Hold To Swipe Input Enable:
Enables an input for the driver to request wipers to operate at full speed while the switch is being held down and then turn off when the switch is in rest position.
Front Intermittent Mode:
This drop down menu allows you to choose the conditions of operation of the front wipers while in intermittent mode
Off: Removes the "Front Intermittent Input" wiring connection from the options.
Single Speed: Allows intermittent mode; where the windscreen wipers will pause between swipes.
Slow when Stopped: Allows the wipers to have a longer pause between swipes when the vehicle is stationary.
Voltage Input: Enables the Intermittent Voltage Settings to allow the use of a variable voltage input to control the pause time between swipes.
Rear Mode:
This drop down menu allows you to choose the conditions of operation of the rear wiper
Disabled: Removes the "Rear Park Input", "Rear Wiper Output", and Rear Full Speed" wiring connections from the options.
Rear Wiper Input: Enables an input for the driver to request the rear wiper to operate.
Follow Front When Reversing: Enables the rear wiper while in reverse gear if the front wipers are in operation.
Front Wiper Output:
This node allows you to assign the output for the front wipers.
Assign- Click to assign/reassign an available Half Bridge Output as Front Wiper Output.
Clear - Click to reset Input assignment.Front Park Input:
This node allows you to assign the park input for the front wipers (This is the rest position of the wipers when not in use)
Assign- Click to assign/reassign an available input as Front Wipers Park Input.
Clear- Click to reset Input assignment.
Front Full Speed Input:
This node allows you to assign the input for the front wipers when requesting full speed.
Assign- Click to assign/reassign an available input as Front Wipers Full Speed Input.
Conditional- Click to set up a generic condition to modify wiper behaviour.
Clear- Click to reset Input assignment.
Front Low Speed Input:
This node allows you to assign the input for the front wipers when requesting low speed.
Assign- Click to assign/reassign an available input as Front Wipers Low Speed Input.
Conditional- Click to set up a generic condition to modify wiper behaviour.
Clear- Click to reset Input assignment.
Front Intermittent Input:
This node allows you to assign the input for the front wipers when requesting intermittent speed.
Assign- Click to assign/reassign an available input as Front Wipers Intermittent Input.
Conditional- Click to set up a generic condition to modify wiper behaviour.
Clear- Click to reset Input assignment.
Front Off Input:
This node allows you to assign the input for the front wipers when not in operation.
Assign- Click to assign/reassign an available input as Front Wipers Off Input.
Conditional- Click to set up a generic condition to modify wiper behaviour.
Clear- Click to reset Input assignment.
Front Hold To Swipe Input:
This node allows you to assign the input for the front wipers when requesting full speed.
Assign- Click to assign/reassign an available input as Front Wipers Full Speed Input.
Conditional- Click to set up a generic condition to modify wiper behaviour.
Clear- Click to reset Input assignment.
Rear Wiper Output:
This node allows you to assign the output for the rear wiper.
Assign- Click to assign/reassign an available Half Bridge Output as Rear Wiper Output.
Clear - Click to reset Input assignment.Rear Park Input:
This node allows you to assign the park input for the rear wiper (This is the rest position of the wiper when not in use)
Assign- Click to assign/reassign an available input as Rear Park Input.
Clear - Click to reset Input assignment.Rear Full Speed Input:
This node allows you to assign the input for the Rear Wiper when requesting full speed.
Assign- Click to assign/reassign an available input as Front Wipers Full Speed Input.
Conditional- Click to set up a generic condition to modify wiper behaviour.
Clear- Click to reset Input assignment.
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