With 7 Inch Display

A/C AUTO AMP.


Description


A/C AUTO AMP. (AIR CONDITIONER AUTOMATIC AMPLIFIER)
- The A/C auto amp. (1) 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 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 conditioner system.




A/C AUTO AMP.


Diagnosis Procedure

1.INSPECTION BY FAIL-SAFE FUNCTION
1. Turn the ignition switch ON.
2. After approximately 30 seconds, check that the air conditioner is operated by the fail-safe function (the operation display of air conditioner is not performed). Refer to 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. Refer to With 7 Inch Display.
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. Refer to 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.