OPERATION PRINCIPLE
Functional Circuit Diagram
AV communication line / CAN (1)
: A/C switch signal
: Blower fan motor switch signal
CAN (2)
: A/C compressor request signal
Functional Initial Inspection Chart
Control unit
Diagnosis item
Location
A
B
C
D
A/C auto amp.
“HVAC”
Self-diagnosis
×
‐
‐
‐
Data monitor
×
‐
‐
‐
Active test
×
‐
‐
×
ECM
“ENGINE”
Self-diagnosis function
(CAN system diagnosis)
‐
‐
×
‐
Data monitor
‐
×
×
‐
IPDM E/R
“IPDM E/R”
Self-diagnosis function
(CAN system diagnosis)
‐
‐
‐
×
Data monitor
‐
‐
×
Auto active test
‐
‐
‐
×