TROUBLE DIAGNOSIS
ATC-65
C
D
E
F
G
H
I
K
L
M
A
B
ATC
Power Supply and Ground Circuit for Auto Amp.
EJS000JM
SYMPTOM: A/C system does not come on.
INSPECTION FLOW
COMPONENT DESCRIPTION
Automatic Amplifier (Auto Amp.)
The auto amplifier has a built-in microcomputer which processes
information sent from various sensors needed for air conditioner
operation. The air mix door motor, mode door motor, intake door
motor, blower motor and compressor are then controlled.
The auto amplifier is unitized with control mechanisms. When the
various switches and temperature adjustment dial are operated, data
is input to the auto amp. from the AV control unit or AV and NAVI
control unit using multiplex communication.
Self-diagnostic functions are also built into auto amplifier to provide
quick check of malfunctions in the auto air conditioner system.
*1
ATC-65, "Power Supply and Ground
Circuit for Auto Amp."
.
*2
ATC-62, "Operational Check"
.
*3
ATC-118, "Multiplex Communication
Circuit"
.
RJIA1591E
RJIA0210E