Power Supply and Ground Circuit For Controller
POWER SUPPLY AND GROUND CIRCUIT FOR CONTROLLERCOMPONENT DESCRIPTION
A/C auto amp.
The A/C auto amp. has a built-in microcomputer which processes information sent from various sensors needed for air conditioner operation. The air mix door motors, mode door motor, intake door motor, defroster door motor, blower motor and compressor are then
controlled.
The A/C auto amp. is unitized with control mechanisms. When the various switches and temperature dials are operated, data is input to the A/C auto amp.
Self-diagnostic functions are also built into the A/C auto amp. to provide quick check of malfunctions in the auto air conditioner system.
Potentio Temperature Control (PTC)
There are two PTCs (driver and passenger) built into the A/C auto amp. They can be set at an interval of 0.5 °C (1.0 °F) in the 18 °C (60 °F) to 32 °C (90 °F) temperature range by rotating the temperature dial. The set temperature is displayed.
A/C Auto Amp. Component Function Check
SYMPTOM: A/C system does not come on.
INSPECTION FLOW
Step 1-4:
Step 4 (Continued):
A/C Auto Amp Power and Ground Diagnosis Procedure
DIAGNOSTIC PROCEDURE FOR A/C SYSTEM
Step 1-2:
