Suzuki XL7 2007 Service Manual page 1838

7A-24 Heating, Ventilation and Air Conditioning:
Diagnostic Starting Point - Heating, Ventilation and Air Conditioning
Begin the system diagnosis with "Diagnostic System Check - Vehicle Diagnostic Information: ". The Diagnostic System
Check - Vehicle will provide the following information:
• The identification of the control modules which are not communicating
• The identification of any stored DTCs and their status
The use of the Diagnostic System Check - Vehicle will identify the correct procedures to begin vehicle diagnosis.
These must be performed before system DTC or symptom diagnosis.
Scan Tool Output Controls - HVAC - Automatic
HVAC Control Module Scan Tool Output Controls
Scan Tool Output
Control
A/C Request
Air Inlet Door Position
Blower Motor
Auxiliary Blower Motor Output Control
Left Temp Door
Position
Auxiliary Air Temp Door Output Control
Mode Door Position
Auxiliary Mode Door
Position
Passenger Temp Door
Position
Rear Defog Request
Recalibrate All Motors Output Control
Diagnostic Information and Procedures
The Enable condition: Key On / Engine Off
Additional Menu
Selections
When you select A/C request, this command allows you to turn the
Output Control A/C Relay On and Off. When the A/C Relay is commanded On, the
A/C compressor clutch should be engaged.
When you select Outside, the HVAC control module commands the
recirculation actuator toward the outside air position. When you
Output Control select Recirc, the HVAC control module commands the
recirculation actuator toward the recirculation position. This is
shown through a command of On and Off.
When you select ON, the HVAC control module commands the
blower motor relay ON and a command to increase or decrease air.
Output Control
When you select OFF, the HVAC control module commands the
blower motor relay OFF.
When you select ON, the HVAC control module commands the
blower motor relay ON and an increase or decrease of air. When
you select OFF, the HVAC control module commands the blower
motor relay OFF.
When you select Cold, the HVAC control module commands the
front air temperature actuator to the full cold position. When you
Output Control
select Hot, the HVAC control module commands the actuator to the
full hot position.
When you select Cold, the HVAC control module commands the
rear air temperature actuator to the full cold position. When you
select Hot, the HVAC control module commands the rear air
temperature actuator to the full hot position.
When you select A/C, the HVAC control module commands the
mode actuator to the panel position. When you select Defrost, the
Output Controls
HVAC control module commands the actuator to the defrost
position.
When you select A/C, the HVAC control module commands the
mode actuator to the panel position. When you select Defrost, the
Output Controls
HVAC control module commands the actuator to the defrost
position.
When you select Cold, the HVAC control module commands the
passenger air temperature actuator to the full cold position. When
Output Controls
you select Hot, the HVAC control module commands the actuator to
the full hot position.
The BCM must receive a Rear Defog request from the HVAC
control module in order to enable the output control. The BCM de-
Output Controls
energizes the Rear Defog Relay located in the I/P BEC when you
select OFF. The relay remains de-energized until you select ON.
When you select On, all air temp, and mode actuators have the
capability to perform a recalibration.
Description