Scheme 1
Component Description
| Part name | Description |
|---|---|
| Suspension control unit | Monitors height sensor input to determine vehicle height. Actuates the compressor motor relay or exhaust valve solenoid to raise or lower the vehicle accordingly. Sends a ground signal to the combination meter to activate the CK SUSP indicator lamp. |
| Suspension air compressor (with built in exhaust valve solenoid) | When the compressor is actuated, it pumps air into the system to raise the rear suspension. When the exhaust valve solenoid is actuated, it vents air from the system to lower the rear suspension. |
| Height sensor | Provides vehicle height input to the suspension control unit. |
COMPONENT DESCRIPTION CHART
Description
The vehicle height sensor operates on a 5 volt reference signal from the suspension control unit. The suspension control unit also provides ground to the height sensor. Depending on vehicle height, the height sensor signal should have between 0.2V and 4.8V.
The compressor motor relay is controlled by the suspension control unit. The suspension control unit supplies voltage to the coil side of the relay to activate it. The compressor motor relay, when activated, supplies power to the suspension air compressor.
The exhaust valve solenoid controls the vent function of the suspension control system. The exhaust valve solenoid is built into the suspension air compressor. The suspension control unit supplies voltage to the exhaust valve solenoid to activate it.
The compressor motor relay is controlled by the suspension control unit. The suspension control unit supplies voltage to the coil side of the relay to activate it. The compressor motor relay, when activated, supplies power to the suspension air compressor.
The exhaust valve solenoid controls the vent function of the suspension control system. The exhaust valve solenoid is built into the suspension air compressor. The suspension control unit supplies voltage to the exhaust valve solenoid to activate it.
The vehicle height sensor operates on a 5 volt reference signal from the suspension control unit. The suspension control unit also provides ground to the height sensor.
The vehicle height sensor operates on a 5 volt reference signal from the suspension control unit. The suspension control unit also provides ground to the height sensor.
The suspension air compressor is supplied power by the compressor motor relay. The suspension control unit supplies power to the compressor motor relay in order to activate the relay and subsequently activate the suspension air compressor.
Receives suspension air compressor ON signal from suspension control unit. When activated, the compressor motor relay supplies power to the suspension air compressor.
Supplies vehicle height input to the suspension control unit.
Receives exhaust valve solenoid signal from suspension control unit. When activated, the exhaust valve solenoid releases air pressure from the suspension control system.
The CK SUSP warning lamp is controlled by a ground signal provided to the combination meter by the suspension control unit.
The suspension control system does not activate. It does not raise or lower the vehicle in response to ride height changes.
The suspension control system does not raise the vehicle in accordance with ride height changes.
The suspension control system does not lower the vehicle in accordance with ride height changes.