System Diagram

System Description
The intake doors are automatically controlled by the temperature setting, ambient temperature, in-vehicle temperature, intake temperature, amount of sunload and ON/OFF operation of the compressor.
SYSTEM OPERATION
The intake door control judges intake door position based on the ambient temperature, the intake air temperature and the in-vehicle temperature. When in shifting mode position D/F, if the DEF or OFF switches are pressed, or when the A/C switch is OFF, the A/C auto amp. sets the intake door to the FRE position.
Door Motor Circuit

Intake Door Control Specification

Air mix door control system
Blower motor control systemPower supply and ground circuit
A/C AUTO AMP.
A/C AUTO AMP.: Description
COMPONENT DESCRIPTION
A/C Auto Amp. (Air Conditioner Automatic Amplifier)
The A/C auto amp. (1) has a built-in microcomputer that processes
information sent from various sensors needed for air conditioner
operation. The air mix door motor(s), the mo ...
Key slot illumination
Description
Blinks when Intelligent Key insertion is required.
Component Function Check
1.CHECK FUNCTION
With CONSULT
Check key slot illumination ("KEY SLOT ILLUMI") Active
Test mode.
Diagnosis Procedure
Regarding Wiring Diagram information, refer to SEC-147,
"Wiring Diagram" or SEC-128, ...
Steering switch
Description
When one of the steering wheel audio control switches is pushed, the
resistance in steering switch circuit changes depending on which button is
pushed.
Diagnosis Procedure
1.CHECK STEERING SWITCH RESISTANCE
Disconnect steering switch connector M88.
Check resistance betwe ...