| Table 1: | Air Suspension Control Module Scan Tool Parameters |
| Table 2: | Air Suspension Output Controls |
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. |
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. |
