With 7 Inch Display

A/C AUTO AMP.





Description

A/C AUTO AMP. (A/C AUTO AMPLIFIER)





- The A/C auto amp. (1) has a built-in microcomputer which processes information sent from various sensors needed for air conditioning system operation.
- The air mix door motor, mode door motor, intake door motor, blower motor and the compressor are then controlled.
- When the various switches and temperature control dial are operated, data is input to the A/C auto amp. from the AV control unit using CAN communication.
- Self-diagnosis functions are also built into A/C auto amp. to provide quick check of malfunctions in the auto air conditioning system.




Component Function Check
1.CHECK OPERATION
1. Press the AUTO switch, and then check that "AUTO" is shown on the display.
2. Operate the temperature control dial. Check that the fan speed or discharge air changes (the discharge air temperature or fan speed varies depending on the ambient temperature, in-vehicle temperature, and set temperature).
Does it operate normally?
YES - INSPECTION END
NO - Perform the diagnosis for the A/C auto amp. SEE Diagnosis Procedure.




Diagnosis Procedure
1.INSPECTION BY FAIL-SAFE FUNCTION
1. Turn the ignition switch ON.
2. After approximately 30 seconds, check that the air conditioning system is operated by the fail-safe function (the operation display of air conditioning system is not performed). Automatic Air Conditioner A/C Auto AMP With 7 Inch Display.
Is the fail-safe function operated?
YES - GO TO 3.
NO - GO TO 2.
2.CHECK A/C AUTO AMP. POWER SUPPLY CIRCUIT AND GROUND CIRCUIT
Check A/C auto amp. power supply circuit and ground circuit. .
Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace parts depending on the inspection results.
3.CHECK PRESET SWITCH
Check the preset switch. Symptom Related Diagnostic Procedures.
Is the inspection result normal?
YES - Replace A/C auto amp.
NO - Repair or replace parts according to the inspection results.