Chassis Control Module Scan Tool Information
Chassis Control Module Scan Tool Data Parameters
| Parameter | System State | Expected Value | Description |
|---|---|---|---|
| Operating Conditions: Ignition ON/Engine Idling at Normal Operating Temperature/Vehicle is in Park or Neutral | |||
| Desired Fuel Pressure | - | 306.8 kPa (44.5 psi) | This displays kPa (psi). This is the desired fuel pressure. |
| Fuel Pump Command | - | On | The scan tool displays On or Off. This is the current state of the fuel pump command. |
| Fuel Pump Signal Command | - | Varies | This displays %. This is the commanded fuel pump signal measured in percentage. |
| Fuel Pressure Sensor | - | 296.4-310.3 kPa (43-45 psi) | This displays kPa (psi). This is the current pressure at the fuel pressure sensor. |
| Fuel Pressure Sensor | - | 4.90-5.01 Volts | This displays Volts. This is the fuel pressure sensor voltage. |
| Ignition 1 Signal | - | Varies | This displays Volts. This is the current ignition 1 signal. |
| LT Fuel Pump Trim | - | Varies | This displays a numeric value. This is the long term (LT) fuel pump trim. |
| ST Fuel Pump Trim | - | Varies | This displays a numeric value. This is the short term (ST) fuel pump trim. |
Chassis Control Module Scan Tool Output Controls
| Output Control | Description |
|---|---|
| Fuel Pressure Control | This output control is used to control the fuel pressure. |
| Fuel Pump | This output control is used to command the fuel pump ON and OFF. |
| Fuel Pump Trim Reset | This output control is used to reset the fuel pump trim. |
Active Grille Air Shutter Scan Tool Data Parameters (If Equipped)
| Parameter | System State | Expected Value | Description |
|---|---|---|---|
| Operating Conditions: Ignition ON/Engine Idling at Normal Operating Temperature / Vehicle is in Park or Neutral | |||
| Active Grille Air Shutter Position Command (Single Shutter System) | - | Varies | This displays %. This is the commanded active grille air shutter position. |
| Active Grille Air Shutter Position (Single Shutter System) | - | Varies | This displays %. This is the actual active grille air shutter position. |
| Active Grille Air Shutter 1 Position Command (Dual Shutter System) | - | Varies | This displays %. This is the commanded active grille air shutter position. |
| Active Grille Air Shutter 1 Position (Dual Shutter System) | - | Varies | This displays %. This is the actual active grille air shutter position. |
| Active Grille Air Shutter 2 Position Command (Dual Shutter System) | - | Varies | This displays %. This is the commanded active grille air shutter position. |
| Active Grille Air Shutter 2 Position (Dual Shutter System) | - | Varies | This displays %. This is the actual active grille air shutter position. |
Active Grille Air Shutter Scan Tool Output Controls (If Equipped)
| Output Control | Description |
|---|---|
| Active Grille Air Shutter System (Single Shutter System) | This output control is used to perform the Active Grille Air Shutter Actuator test. It is used to cycle the active grille air shutter open and closed. The test result will display pass or fail based on the ability of the louvers to cycle open and closed. |
| Active Grille Air Shutter 1 (Dual Shutter System) | This output control is used to perform the Active Grille Air Shutter Actuator test. It is used to cycle the active grille air shutter open and closed. The test result will display pass or fail based on the ability of the louvers to cycle open and closed. |
| Active Grille Air Shutter 2 (Dual Shutter System) | This output control is used to perform the Active Grille Air Shutter Actuator test. It is used to cycle the active grille air shutter open and closed. The test result will display pass or fail based on the ability of the louvers to cycle open and closed. |
Exhaust Flow Control Valve Scan Tool Data Parameters (If Equipped)
| Parameter | System State | Expected Value | Description |
|---|---|---|---|
| Operating Conditions: Ignition ON/Engine Idling at Normal Operating Temperature / Vehicle is in Park or Neutral | |||
| Exhaust Flow Control Valve Command | - | Open/Closed | Exhaust Flow Valve Commanded State |
| Exhaust Flow Control Valve Command | - | % | Exhaust Flow Valve Commanded Duty Cycle (0%-100%) |
| Exhaust Flow Control Valve Performance Mode | - | Active/Inactive | Exhaust Flow Valve Control Status |
| Exhaust Flow Control Valve Rumble Mode | - | Active/Inactive | Exhaust Flow Valve Control Status |
| Exhaust Flow Control Valve | - | Active/Inactive | Exhaust Flow Valve Control Status |
Exhaust Flow Control Valve Scan Tool Output Controls (If Equipped)
| Output Control | Description |
|---|---|
| Exhaust Flow Control Valve Command | This output control is used to cycle the exhaust flow control valve open and closed. |
CCM Scan Tool Parameters for Trailer Brake Control System (If Equipped)
| Parameter | System State | Expected Value | Description |
|---|---|---|---|
| Operating Conditions: Ignition ON/Engine Idling at Normal Operating Temperature / Vehicle is in Park or Neutral | |||
| ABS Active Signal | - | OK | The scan tool displays Ok/Not Ok. The scan tool displays Ok when no problems are found with the ABS Active Signal serial data message from the electronic brake control module to the chassis control module. |
| Antilock Braking System | - | Inactive | The scan tool displays Active/Inactive. The scan tool displays Inactive when the ABS system is not functioning. |
| Automatic Brake Control Gain Request From EBCM | - | 0-100% | The scan tool displays a number between 0-100%. |
| Automatic Brake Request From EBCM | - | No | The scan tool displays Yes/No. This is a request from the EBCM to apply the trailer brakes. |
| Automatic-Brake Torque | - | The scan tool displays a numerical value. | |
| Automatic-Brake Torque Signal | - | Ok | The scan tool displays Ok/Not Ok. The scan tool displays Ok when no problems are found with the Automatic Brake Torque Signal serial data message to the chassis control module. |
| Automatic Braking Active Signal | - | Ok | The scan tool displays Ok/Not OK. The scan tool displays OK when no problems are found with the Automatic Braking Active Signal serial data message to the chassis control module. |
| Automatic Braking Event | - | Not Detected | The scan tool displays Detected/Not Detected. This parameter represents a command to apply the trailer brakes from the adaptive cruise control system. |
| Brake Master Cylinder Pressure Sensor | - | Varies | The scan tool will display brake fluid pressure in the master cylinder. The scan tool will display a kPa or psi signal received from the chassis control module. |
| Brake Pressure Signal | - | OK | The scan tool will display Ok/Not Ok. The scan tool will display a serial data message received from the chassis control module. |
| Brake Request from EBCM | - | Ok | The scan tool displays Ok/Not Ok. The scan tool displays Ok when no problems are found with the Brake Request signal serial data message from the electronic brake control module to the chassis control module. |
| Desired Trailer Brake Control Duty Cycle | - | 0-100% | The scan tool displays a number between 0-100%. This number represents a duty cycle request signal from the chassis control module to the trailer brake power module. |
| Deviation Between Manual Trailer Brake Apply Request Signal 1 and 2 | - | Varies | The scan tools displays a percentage difference between the Apply Request Signal 2 and Redundant Request Signal 1. |
| Driver Initiated Brake Event | - | Not Detected | The scan tool displays Detected/Not Detected. The scan tool detects when the driver has applied the trailer brakes. |
| Induced Voltage by Trailer Brake Coil | - | 0-20 V | The scan tool displays a voltage. This number represents the actual voltage supplied by the trailer brake power module to the trailer brakes. |
| Manual Trailer Brake Apply Request Signal 1 | - | Varies | The scan tool displays a percentage. This represents a brake apply signal between the chassis control module and the trailer brake power module. |
| Manual Trailer Brake Apply Request Signal 2 | - | Varies | The scan tool displays a percentage. This represents a brake apply signal between the chassis control module and the trailer brake power module. |
| Stop Lamp Signal | - | Not Requested | The scan tool displays Requested/Not Requested. This is the brake pedal position sensor signal from the BCM to the chassis control module. |
| Trailer Brake Automatic Control State | - | Normal | The scan tool displays Normal/Active/Temporarily Inhibited/Temporarily Limited/Permanently Failed/Communication Failed/Disabled by Calibration. This represents the operational state of the chassis control module. |
| Trailer Brake Control Duty Cycle | - | 0-100% | The scan tool displays a percentage. This is the pulse width modulated output signal from the trailer brake power module to the trailer brakes. |
| Trailer Brake Control Output Circuit | - | Okay | The scan tool displays Unknown/Short to Battery/Short to Ground/Okay. This represents the state of health of the output circuit from the trailer brake power module to the trailer brakes. |
| Trailer Brake Control Output Circuit | - | 0-20 V | The scan tool displays a voltage. This represents the voltage supplied by the trailer brake power module to the trailer brakes. |
| Trailer Brake Power Control Module | - | De-Energized | The scan tool displays Energized/De-Energized. This represents the state of the trailer brake power module. |
| Trailer Brake Power Control Module Battery Voltage | - | Varies | The scan tool displays a voltage. This represents the battery voltage supplied to the trailer brake power module. |
| Trailer Brake Type | - | Undefined | The scan tool displays Undefined when a trailer is not connected to the vehicle. The scan tool displays Electromagnetic Brakes or Electrohydraulic Brakes when a trailer is connected to the vehicle. The type displayed is based on what is detected by the chassis control module. |
| Trailer Brake User Gain | - | Varies | The scan tool displays percent of full gain setting. The scan tool displays 0-100%. Each full gain setting represents an increment of approximately 10 percent of full gain setting. Approximately 40% will be indicated with a gain setting of 4.0, 65% will be indicated with a gain setting of 6.5, etc. |
| Trailer Brake User Gain Switch | - | Varies | The scan tool displays percent of full gain setting. The scan tool displays 0-100%. Each full gain setting represents an increment of approximately 10 percent of full gain setting. Approximately 40% will be indicated with a gain setting of 4.0, 65% will be indicated with a gain setting of 6.5, etc. |
| Vehicle Speed | - | Varies | The scan tool displays 0-327 km/h (0-204 mph). The scan tool displays 0 km/h (0 mph) when the vehicle is not moving. This is the vehicle speed serial data message from the ECM. |
| Vehicle Stability Enhancement System Signal | - | Ok | The scan tool displays Ok/Not Ok. The scan tool displays Ok when no problems are found with the Vehicle Stability Enhancement System signal to the chassis control module. |
| Wheel Speed Signal | - | Ok | The scan tool displays Ok/Not Ok. The scan tool displays Ok when no problems are found with the Wheel Speed signal from the EBCM to the chassis control module. |