For 1990-2009 cars

Table 1: | Rear HVAC/RSA Scan Tool Data Parameters
Table 2: | Rear HVAC/RSA Scan Tool Output Controls

#### Rear HVAC/RSA Scan Tool Data Parameters

Parameter | System State | Expected Value | Definition
--- | --- | --- | ---
Operating Conditions: Ignition ON
Battery Voltage | -- | Varies | This displays volts. This is the voltage input supplied to the rear HVAC.
Display Dimming Signal | -- | Varies | This displays volts. This is the current voltage supplied to the rear HVAC display dimming.
Left Rear Heated Seat Switch | -- | Inactive | The scan tool displays Active or Inactive. This is the state of the left rear heated seat switch.
Power Button | -- | Inactive | The scan tool displays Active or Inactive. This is the state of the rear seat audio system.
Program Switch | -- | Inactive | The scan tool displays Active or Inactive. This is the state of the rear seat audio program switch.
Rear Audio Seek Down Switch | -- | Inactive | The scan tool displays Active or Inactive. This is the state of the rear audio seek down switch.
Rear Audio Seek Up Switch | -- | Inactive | The scan tool displays Active or Inactive. This is the state of the rear audio seek up switch.
Rear HVAC Fan Down Sw. | -- | Inactive | The scan tool displays Active or Inactive. This is the state of the rear HVAC fan down switch.
Rear HVAC Fan Down Sw. | -- | Inactive | The scan tool displays Active or Inactive. This is the state of the rear HVAC fan up switch.
Rear Temperature Down Switch | -- | Inactive | The scan tool displays Active or Inactive. This is the state of the rear temperature down switch.
Rear Temperature Up Switch | -- | Inactive | The scan tool displays Active or Inactive. This is the state of the rear temperature up switch.
Right Rear Heated Seat Switch | -- | Inactive | The scan tool displays Active or Inactive. This is the state of the right rear heated seat switch.
Source | -- | Inactive | The scan tool displays Active or Inactive. This is the state of the rear audio source switch.

#### Rear HVAC/RSA Scan Tool Output Controls

Scan Tool Output Control | Description
--- | ---
Display(s) Test | The rear HVAC/RSA module will illuminate all indicators and display segments on the module display.
Infrared Transmitter Power Control | The rear HVAC/RSA module will activate the infrared transmitter, which sends wireless signals to the RSA headphones.