Air Suspension Control Module Scan Tool Information
Air Suspension Control Module Scan Tool Parameters
| Parameter | System State | Expected Value | Description |
|---|---|---|---|
| Operating Conditions: Vehicle in park with Ignition switch ON | |||
| Air Pressure Sensor | - | Varies | The scan tool displays Volts. This is used to monitor the systems pressure. |
| Air Press. Sen. 5V Reference | - | Varies | The scan tool displays Volts. The voltage will fall below 4.75 volts or exceed 5.25 volts. |
| Air Suspension Mode Status | - | OK | The scan tool displays Ok, Jacked, Overloaded, and Failure. This is the current status of the air suspension module |
| Compressor Relay Cmd | - | OFF | The scan tool displays on or off. This indicates when the compressor relay is activated. |
| Compressor 1 Temperature | - | OK | The scan tool displays Ok or Hot. This identifies when the compressor thermal trip has set. |
| Compressor 2 Temperature | - | OK | The scan tool displays Ok or Hot. This identifies when the compressor thermal trip has set. |
| Control Valve 12V Ref. | - | Varies | The scan tool displays Volts. |
| ERH Switch | - | Released | The scan tool displays Released or Pressed. This indicates when the ERH switch is pressed. |
| ERH Switch Indicator | - | Off | The scan tool displays Off or On. This is the status of the extended ride height. |
| Exhaust Valve Command | - | Off | The scan tool displays Off or On. This is the state of the exhaust valve. |
| Inflator Switch | - | Released | The scan tool displays Released or Pressed. This indicates when the inflator switch is pressed. |
| Inflator Switch Indicator | - | Off | The scan tool displays Off or On. This is the status of the inflator switch. |
| LR Control Valve | - | Off | The scan tool displays Off or On. This is the status of the LR control Valve. |
| LR Position Sensor | - | Varies | The scan tool displays Volts. This detects height changes at the rear of the vehicle and sends a signal back to the ASCM to display the correct voltage |
| RR Control Valve Cmd | - | Off | The scan tool displays Off or On. This is the status of the RR control valve. |
| RR Position Sensor | - | Varies | The scan tool displays Volts. This detects height changes at the rear of the vehicle and sends a signal back to the ASCM to display the correct voltage |
| Suspension Pos. Sen. 5V Ref. | - | Varies | The scan tool displays Volts. The voltage will fall below 4.75 volts or exceed 5.25 volts. |
Air Suspension Output Controls
| Output Control | Description |
|---|---|
| Compressor Relay | This output control commands the compressor On or Off. |
| Depressurize System | This output control commands the suspension module to deflate the air springs. |
| ERH Switch Indicator | This output control commands the module to activate extended ride height. |
| Exhaust Valve | This output control commands the exhaust valve On or Off. |
| Inflator Switch Indicator | This output control commands the module to activate the accessory inflator. |
| LR Control Valve | This output control commands the left control valve On or Off. |
| Pressurize Valve | This output control commands the suspension module to inflate the air springs. |
| RR Control Valve | This output control commands the right control valve On or Off. |
| Suspension Position Calibration | This output control commands the module to calibrate the suspension position. |