For 1990-2009 cars

Table 1: | Park Assist Module Scan Tool Data Parameters
Table 2: | Park Assist Module Scan Tool Output Controls

#### Park Assist Module Scan Tool Data Parameters

Parameter | System State | Expected Value | Definition
--- | --- | --- | ---
Operating Conditions: Ignition ON
Battery Voltage | -- | Varies | This displays volts. This is the system voltage supplied to the park assist module.
Loudspeaker Feed Voltage Output | -- | Varies | This displays volts. This is the voltage output to the loud speaker.
Park Assist Disable 1-7 History | -- | Varies | This displays Empty, Manual Disable, Park Brake, Hitch/Obj Attach, Reverse Ovrspeed, Inhibit, Sens Disturbance, Snow/Ice/Mud or Sensor Ring Time. These are the last seven reasons why the park assist system was disabled in the history data.
Park Assist Front Display LED CKT | -- | OK | This displays OK or Over Current. This is the state of the park assist front display LED circuit.
Park Assist Rear Display LED CKT | -- | OK | This displays OK or Over Current. This is the state of the park assist rear display LED circuit.
Park Assist Rear Red LED | -- | Off | This displays On or Off. This is the state of the red LED indicator in the park assist display.
Park Assist Rear Y1 LED | -- | Off | This displays On or Off. This is the state of the first yellow LED indicator in the park assist display.
Park Assist Rear Y2 LED | -- | Off | This displays On or Off. This is the state of the second yellow LED indicator in the park assist display.
Park Assist Switch | -- | Inactive | This displays Active or Inactive. This is the state of the object detection system.
Park Assist Switch LED | -- | Off | This displays On or Off. This is the state of the park assist switch indicator.
Park Assist Switch LED CKT | -- | OK | This displays OK or Over Current. This is the state of the park assist switch LED circuit.
Park Assist System Status | -- | Disable | This displays Disable, Enable, Inhibit or Failed/Block. This is the state of the park assist system.
Power Mode | -- | Run | This displays Off, Accessory, Run or Crank Request. This is the state of the ignition switch.
Rear Region 1 | -- | No Detect | This displays No Detect or Zone 1-8. This is the state of the rear region 1 object detection sensor.
Rear Region 2 | -- | No Detect | This displays No Detect or Zone 1-8. This is the state of the rear region 2 object detection sensor.
Rear Region 3 | -- | No Detect | This displays No Detect or Zone 1-8. This is the state of the rear region 3 object detection sensor.
Rear Region 4 | -- | No Detect | This displays No Detect or Zone 1-8. This is the state of the rear region 4 object detection sensor.
Sensor Feed Voltage Output | -- | Varies | This displays volts. This is the voltage output to the object sensors.
Vehicle Speed | -- | Varies | The scan tool displays km/h (mph). This is the current vehicle speed.

#### Park Assist Module Scan Tool Output Controls

Scan Tool Output Control | Description
--- | ---
Clear History Data | The object alarm module clears the park assist disable history when commanded from the scan tool.
LED Test | The object alarm module illuminates the park assist switch indicator when commanded from the scan tool.
Rear Red LED | The object alarm module illuminates the rear red LED when commanded ON from the scan tool.
Rear Yellow LED 1 | The object alarm module illuminates the first rear yellow LED when commanded ON from the scan tool.
Rear Yellow LED 2 | The object alarm module illuminates the second rear yellow LED when commanded ON from the scan tool.