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This air suspension controller manages up to 4 Air Springs as an intelligent switchbox with user-adjustable control of valve speed. The AccuAir SwitchSpeed™ also manages your Air Compressor(s) to keep onboard air at an ideal pressure for your application (If Optional Electronic Tank Pressure Sensor is connected).
Table Of Contents Description Page Number Terms & Conditions Service Disable & General Understanding General Operation Setup Programming 9-13 Operation Trouble Indication & Diagnosis 14-15 System Diagram 16-17...
CUSTOMER. Warranty ACCUAIR will repair or replace any failed components for the life of the vehicle given that the components were installed and operated as intended by ACCUAIR. Upon the return of a failed component(s), ACCUAIR will determine the cause of failure.
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If the vehicle system voltage drops below 10.5 volts during operation, the SwitchSpeed™ will automatically turn the compressor(s) OFF and show the trouble indication below. The SwitchSpeed™ will go back to normal operation once the vehicle system voltage reaches 12.5 volts or the ignition is cycled.
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This air suspension controller manages up to 4 Air Springs as an intelligent switchbox with user-adjustable control of valve speed. The AccuAir SwitchSpeed™ also manages your Air Compressor(s) to keep onboard air at an ideal pressure for your application (If Optional Electronic Tank Pressure Sensor is connected).
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CUSTOMER. Warranty ACCUAIR will repair or replace any failed components for the life of the vehicle given that the components were installed and operated as intended by ACCUAIR. Upon the return of a failed component(s), ACCUAIR will determine the cause of failure.
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SwitchSpeed™ Controller (Main) 70Amp Fuse 12 V Batt (F1) 10 Amp ECU Fuse BATT_12V Compressor(s) (F2) 3 Amp Relay Compressor Relay Fuse When using other MFG’s COMP_1 valves: P_SENS Compressor 1 Compressor 2 (Optional) V_GND 1.) Up 4 White/Black 2.) Up 3 White/Orange 3.) Up 2...
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Installation Overview: After your Air Springs and Suspension Components have been installed, you can begin installing the AccuAir components in the following order: Install VU4 (Valve Unit) Install ECU (Electronic Control Unit) Install SwitchSpeed™ Controller Install Tank Pressure Sensor (Optional)
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VU4 (Valve Unit) Mounting: Valve Mounting Considerations • These valves are 100% weather-proof and can be mounted under vehicle. • You will need to mount the ECU near the valves, so make sure that there is enough space for both items. Step-by-Step 1.) Find a flat location to mount the VU4.
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ECU Mounting: ECU Mounting Considerations • The ECU is 100% weather-proof and can be mounted under vehicle next to the valves. • The ECU can be mounted upright or on its back as seen below. (If back mounted, back tabs must be removed) •...
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Example 1: Pressure Sensor Mounting. (In the top of the tank) Air Tank WARNING: Optional compressor control require use of an AccuAir Pressure Sensor. System cannot be connected to any other brand of Pressure Sensor or Pressure Switch. Step-By-Step 1.) Coat the threads of the Sensor and any threaded fitting or adapter used in the air supply system with a thread sealer to help prevent air leaks.
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Installing & Wiring Air Compressor(s): Air Compressor(s) Mounting Considerations • There should be a fuse in between the Compressor(s) and the battery. • The Compressor(s) get very HOT during operation. Make sure to leave space between items that are susceptible to heat. (Wires, Nylon-Air Line, etc.) Step-By-Step 1.) Find a location for the Compressor(s) to be mounted with good air circulation.
1.) First connect the Main Harness at the ECU then route each section to each component on the vehicle. 2.) Route the SwitchSpeed™ harness (Mini USB Cable) to the inside of the vehicle and leave until later in installation. Route the single purple wire labeled “HEADLIGHTS”...
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SwitchSpeed™ Controller Mounting: SwitchSpeed™ Controller Mounting • Choose a mounting location that will allow the driver to operate and view the SwitchSpeed™ Controller from the driver’s seat. Once your target mounting position has been found, use the template to drill mounting holes.
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Now your system components are installed, plumbed, and wired (Mechanical Air Suspension Components, Compressor(s), Tank(s), Tank Pressure Sensor, Valves, Air Line, ECU, and SwitchSpeed™ Controller), it is time to test the system. To Begin Testing The System: Turn the vehicle Ignition ON, or start the vehicle.
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TOP VIEW Drill Size: 5/32” SwitchSpeed™ Mounting Template. Bottom Side with USB Connector Accept no compromises, choose only quality performance suspension parts.
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