Auxiliary Heater and Air Conditioning Control Module Scan Tool Information. HUMMER H2 2008

GM Service Manual Online

For 1990-2009 cars only

Makes 🢒 HUMMER 🢒 2008 🢒 H2 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Auxiliary Heater and Air Conditioning Control Module Scan Tool Information

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	Description
Operating Conditions: Ignition ON
Battery Voltage Signal	--	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 Up Sw.	--	Inactive	The scan tool displays Active or Inactive. This is the state of the rear HVAC fan up switch.
Rear HVAC Mode Switch	--	Inactive	The scan tool displays Active or Inactive. This is the state of the rear HVAC mode 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 Button	--	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

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.