|
|
AUTOMATIC AIR CONDITIONING SYSTEM HAC-343 < SYMPTOM DIAGNOSIS > [AUTO A/C (WITHOUT HEAT PUMP)] C D E F G H J K L M A B HAC N O P SYMPTOM DIAGNOSIS AUTOMATIC AIR CONDITIONING SYSTEM Symptom Table INFOID:0000000010122051 NOTE: Perform self-diagnoses with CONSULT before performing the symptom diagnosis. If any DTC is detected, perform the corresponding diagnosis. Symptom Corresponding malfunction part Check item/Reference • Air conditioning system does not activate. • A/C auto amp. ignition power supply and ground circuit • A/C auto amp. HAC-333, "A/C AUTO AMP. : Di- Discharge air temperature does not change. Air mix door motor system installation Check air mix door motor sys- . Air outlet does not change. Mode door motor system installation Check mode door motor system . Air inlet does not change. Intake door motor system installation Check intake door motor system . Blower motor does not operates or operation speed is not • Blower motor power supply circuit circuit • Power transistor power supply and ground circuit • Power transistor control signal cir- cuit • Blower motor HAC-335, "Diagnosis Proce-
Compressor does not operate. • The circuit between VCM and refrig- erant pressure sensor • Refrigerant pressure sensor HAC-346, "Diagnosis Proce- • Insufficient cooling. • Cooler cycle tion signal circuit • Temperature setting trimmer HAC-344, "Diagnosis Proce- • Insufficient heating. • Heater hose HAC-345, "Diagnosis Proce- Noise is heard when the A/C During compressor op- Cooler cycle During blower motor op- • Mixing any foreign object in blower motor • Blower motor fan breakage HAC-337, "Component Inspec- • Memory function does not operate normally. tion.) • A/C auto amp. battery power supply circuit • A/C auto amp. |