A/C Auto Amp. Component Function Check

POWER SUPPLY AND GROUND CIRCUIT FOR CONTROLLER


A/C Auto Amp. Component Function Check

SYMPTOM: A/C system does not come on.

INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - AUTO MODE
1. Press AUTO switch.
2. Display should indicate AUTO. Confirm that the compressor clutch engages (sound or visual inspection).
(Discharge air and blower speed will depend on ambient, in-vehicle and set temperatures.)
Can a symptom be duplicated?
YES - GO TO 3.
NO - GO TO 2.
2.PERFORM COMPLETE OPERATIONAL CHECK
Perform a complete operational check and check for any symptoms. Operational Check (Front).
Can a symptom be duplicated?
YES - How to Perform Trouble Diagnosis For Quick and Accurate Repair.
NO - System OK.
3.CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
- GO TO 4.
4.CHECK POWER AND GROUND CIRCUIT
Check main power supply and ground circuit. A/C Auto Amp Power and Ground Diagnosis Procedure.
Is the inspection result normal?
YES - System OK.
NO - Replace A/C auto amp. Service and Repair.