On-Board Diagnostic System Description; Schematic And Routing Diagram; A/C System Air Flow Diagram - Suzuki 2006 SX4 Service Manual

On-Board Diagnostic System Description

NOTE
The diagnostic information as diagnostic
trouble code (DTC) can be known by using
SUZUKI scan tool. For further details, refer to
"DTC Check".
HVAC control module detects malfunctions, which may
occur in the following area.
• Inside air temperature sensor
• Evaporator temperature sensor
• Sunload sensor
• Temperature control actuator
• Air flow control actuator
• Temperature selector of HVAC control module
• Air flow selector of HVAC control module
• Blower speed selector of HVAC control module
• Back-up power supply circuit of HAVC control module
• Serial communication line between BCM and HVAC
control module

A/C System Air Flow Diagram

Refer to "A/C System Air Flow Diagram".
S6RW0C7221004

Schematic and Routing Diagram

Air Conditioning System: Automatic Type 7B-40
• Received data from BCM as follows
– Outside air temperature sensor signal
– ECT sensor signal
– A/C refrigerant pressure sensor signal
– VSS signal
– Engine type signal
– Combination meter spec signal
– CAN communication circuit failure signal
When HVAC control module detects malfunction, the "A/
C" indicator light (1) flashes to warn and the diagnostic
trouble code (DTC) is stored in the memory of the
module. When diagnosing trouble, the DTC can be
checked according to "DTC Check".
1
I5RW0A722002-01
S6RW0C7222001