Liftgate Close Actuator Motor Control Module Scan Tool Information
WARNING: This page is about a different car, the 2009 GMC Envoy and 2009 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Liftgate Module Scan Tool Data Parameters
| Parameter | System State | Expected Value | Description |
|---|---|---|---|
| Operating Conditions: Ignition ON | |||
| Battery Voltage | __ | Varies | The scan tool displays 8-14 volts. The amount of battery voltage available at the passenger door module endgate module/liftgate module |
| Defog Relay Voltage | __ | Varies | The scan tool displays the voltage supplied to the rear defogger grid. |
| Fob 1-4 Battery | __ | OK | The scan tool displays OK to indicate a good battery voltage level was last received. |
| Fob 1-4 Programmed | __ | Yes | The scan tool displays Yes/No. The scan tool displays Yes when the fob is programmed |
| Ign. Since Current DTC | __ | Varies | The scan tool displays 0-100. The number of the ignition cycles since the setting of the most recent current diagnostic trouble code (DTC). |
| Last Fob Button Pressed | __ | Unlock | The scan tool displays Dr. Door Unlock, All Door Unlock, Door Lock, indicating the last input received from a programmed fob. |
| LF Pressure Sensor ID | __ | Numeric | The scan tool displays a number up to 8 digits in length, or an asterisk. A number displayed indicates the left front tire pressure sensors unique identification (ID) code, and that it has been learned into the EGM/LGMs memory. An asterisk indicates the sensors ID code has not been learned into the EGM/LGMs memory. |
| LF Pressure Sensor Mode | __ | Stationary | This data parameter indicates the mode contained in the last transmission received from the left front tire pressure sensor. The scan tool displays Stationary, Wake, Drive, Re-measure, Learn, Low Bat, or N/A. Stationary indicates the sensors internal roll switch is opened and the sensor has made its stationary transmission which only occurs once every 60 minutes from the last stationary transmission. Wake indicates the sensor is transitioning to drive mode. In this mode the sensor has detected an initial roll switch closure. Drive indicates vehicle speed is greater than 32 km/h (20 mph). In this mode the sensor's internal roll switch has been closed for at least 10 seconds and the sensor is transmitting once every 60 seconds. Re-measure indicates the sensor has detected a 11 kPa (1.6 psi) change in tire pressure. This mode occurs to decrease the time between when the pressure change occurred and the EGM/LGM has received it. Learn indicates the sensor has been activated by a low frequency (LF) signal. Low Bat indicates the sensor's internal battery charge level is low. N/A indicates the sensor is in a mode not supported by the scan tool. |
| LF Tire Pressure | __ | 35 psi | The scan tool displays 0-344 kPa (0-51 psi). The actual pressure of the left front tire. |
| Liftgate Ajar Switch | __ | Closed | This parameter indicates the current status of the liftgate ajar switch. |
| Liftgate Unlock Switch | __ | Inactive | The scan tool displays Active or Inactive. This is the status of the liftgate unlock switch. |
| Liftglass Ajar Switch | __ | Closed | This parameter indicates the current status of the liftgass ajar switch. |
| Lock Command | __ | Idle | The scan tool displays the LGM output state to the lock actuator as Idle/Unlock/Lock. |
| LR Pressure Sensor ID | __ | Numeric | The scan tool displays a number up to 8 digits in length, or an asterisk. A number displayed indicates the left rear tire pressure sensors unique identification (ID) code, and that it has been learned into the EGM/LGMs memory. An asterisk indicates the sensors ID code has not been learned into the EGM/LGMs memory. |
| LR Pressure Sensor Mode | __ | Stationary | This data parameter indicates the mode contained in the last transmission received from the left rear tire pressure sensor. The scan tool displays Stationary, Wake, Drive, Re-measure, Learn, Low Bat, or N/A. Stationary indicates the sensors internal roll switch is opened and the sensor has made its stationary transmission which only occurs once every 60 minutes from the last stationary transmission. Wake indicates the sensor is transitioning to drive mode. In this mode the sensor has detected an initial roll switch closure. Drive indicates vehicle speed is greater than 32 km/h (20 mph). In this mode the sensors internal roll switch has been closed for at least 10 seconds and the sensor is transmitting once every 60 seconds. Re-measure indicates the sensor has detected a 11 kPa (1.6 psi) change in tire pressure. This mode occurs to decrease the time between when the pressure change occurred and the EGM/LGM has received it. Learn indicates the sensor has been activated by a LF signal. Low Bat indicates the sensors internal battery charge level is low. N/A indicates the sensor is in a mode not supported by the scan tool. |
| LR Tire Pressure | __ | 35 psi | The scan tool displays 0-344 kPa (0-51 psi). The actual pressure of the left rear tire. |
| Rear Defog Requested | __ | No | The scan tool displays Yes/No. When the window defogger switch is pressed, a request from HVAC control module is sent to LGM. This parameter indicates if the request was received. |
| Rear Washer Requested | __ | No | The scan tool displays YES or NO. The scan tool displays YES when it has received a confirmation message from LGM/EGM to activate the rear washer. |
| Requested Lock/Unlock | __ | Idle | The scan tool displays the Lock/Unlock input to the LGM. |
| Requested Rear Wiper | __ | Off | The scan tool displays OFF, DELAY 1, DELAY 2, ON, or WASH. The scan tool displays the current rear wiper switch position determined by the switch position data received by the liftgate control module from body control module (BCM). |
| RF Pressure Sensor ID | __ | Numeric | The scan tool displays a number up to 8 digits in length, or an asterisk. A number displayed indicates the right front tire pressure sensors unique identification (ID) code, and that it has been learned into the EGM/LGMs memory. An asterisk indicates the sensors ID code has not been learned into the EGM/LGMs memory. |
| RF Pressure Sensor Mode | __ | Stationary | This data parameter indicates the mode contained in the last transmission received from the right front tire pressure sensor. The scan tool displays Stationary, Wake, Drive, Re-measure, Learn, Low Bat, or N/A. Stationary indicates the sensors internal roll switch is opened and the sensor has made its stationary transmission which only occurs once every 60 minutes from the last stationary transmission. Wake indicates the sensor is transitioning to drive mode. In this mode the sensor has detected an initial roll switch closure. Drive indicates vehicle speed is greater than 32 km/h (20 mph). In this mode the sensors internal roll switch has been closed for at least 10 seconds and the sensor is transmitting once every 60 seconds. Re-measure indicates the sensor has detected a 11 kPa (1.6 psi) change in tire pressure. This mode occurs to decrease the time between when the pressure change occurred and the EGM/LGM has received it. Learn indicates the sensor has been activated by a LF signal. Low Bat indicates the sensors internal battery charge level is low. N/A indicates the sensor is in a mode not supported by the scan tool. |
| RF Tire Pressure | __ | 35 psi | The scan tool displays 0-344 kPa (0-51 psi). The actual pressure of the right front tire. |
| RR Pressure Sensor ID | __ | Numeric | The scan tool displays a number up to 8 digits in length, or an asterisk. A number displayed indicates the right rear tire pressure sensors unique identification (ID) code, and that it has been learned into the EGM/LGMs memory. An asterisk indicates the sensors ID code has not been learned into the EGM/LGMs memory. |
| RR Pressure Sensor Mode | __ | Stationary | This data parameter indicates the mode contained in the last transmission received from the right rear tire pressure sensor. The scan tool displays Stationary, Wake, Drive, Re-measure, Learn, Low Bat, or N/A. Stationary indicates the sensors internal roll switch is opened and the sensor has made its stationary transmission which only occurs once every 60 minutes from the last stationary transmission. Wake indicates the sensor is transitioning to drive mode. In this mode the sensor has detected an initial roll switch closure. Drive indicates vehicle speed is greater than 32 km/h (20 mph). In this mode the sensors internal roll switch has been closed for at least 10 seconds and the sensor is transmitting once every 60 seconds. Re-measure indicates the sensor has detected a 11 kPa (1.6 psi) change in tire pressure. This mode occurs to decrease the time between when the pressure change occurred and the EGM/LGM has received it. Learn indicates the sensor has been activated by a LF signal. Low Bat indicates the sensors internal battery charge level is low. N/A indicates the sensor is in a mode not supported by the scan tool. |
| RR Tire Pressure | __ | 35 psi | The scan tool displays 0-344 kPa (0-51 psi). The actual pressure of the right rear tire. |
| Selected Front Tire Pressure | __ | 35 psi | The scan tool displays the front tire pressure that was last selected for the vehicle. |
| Selected Rear Tire Pressure | __ | 35 psi | The scan tool displays the rear tire pressure that was last selected for the vehicle |
| Selected Tire Type | __ | P-Metric Standard | The scan tool displays P-Metric Standard, P-Metric Extended, Load Range C, Load Range D, Load Range E. The tire type that was last selected for the vehicle. |
| Sensor Learn Mode | __ | Inactive | The scan tool displays Active, or Inactive. Active indicates the Tire Pressure Monitor (TPM) systems tire pressure sensor learn mode is active and able to learn all 4 sensor ID codes. Inactive indicates the TPM system is not able to learn the sensor ID codes. |
| TPM System Enabled | __ | Yes | The scan tool displays Yes, or No. Yes indicates the TPM option has been enabled in the EGM/LGM. No indicates the TPM option has not been enabled in the EGM/LGM. |
Liftgate Module Scan Tool Output Controls
| Output Control | Description |
|---|---|
| Lock/Unlock | The liftgate module will command liftgate lock actuator to lock or unlock. |
| Program All Key Fobs | The Liftgate module will erase all previously programmed key fobs and then program the first fob as Fob 1, the next fob as Fob 2, and any additional fobs as Fob 3 and Fob 4. |
| Program Individual Key Fob | The Liftgate module will program a key fob to any one of 4 possible positions: Key Fob 1-4. |
| Rear Defog | The LGM enables the rear window defogger. The rear window defogger grid should become warm |
| Rear Wiper | The rear wiper can be activated via the scan tool. |
| Tire Option Enable | After replacing the endgate or liftgate module (EGM/LGM) assembly, the scan tool must be used to enable the TPM option, refer to Control Module References . |
| Tire Type/Pressure Selection | After replacing the EGM/LGM assembly, the scan tool must be used to select the correct tire type and the front and rear tire pressures for the vehicle, refer to Control Module References . |