FOREWORD [FULL-AUTO AIR CONDITIONER]
- The areas for inspection (steps) are given according to various circuit malfunctions. Use the following chart to verify the symptoms of the trouble in order to diagnose the appropriate area.
NO.1 INSUFFICIENT AIR (OR NO AIR) BLOWN FROM VENTS [FULL-AUTO AIR CONDITIONER]
| 1 | Insufficient air (or no air) blown from vents |
|---|---|
| DESCRIPTION | Problem with each vent and/or duct. Airflow mode does not change. |
| POSSIBLE CAUSE | Malfunction in airflow mode actuator Malfunction in VENT mode system Malfunction in HEAT mode system Malfunction in DEFROSTER mode system |
TROUBLESHOOTING CHART
NO.2 AMOUNT OF AIR BLOWN FROM VENTS DOES NOT CHANGE [FULL-AUTO AIR CONDITIONER]
| 2 | Amount of air blown from vents does not change. |
|---|---|
| DESCRIPTION | Malfunction in blower system |
| POSSIBLE CAUSE | A/C unit malfunction Front blower motor malfunction Malfunction in power MOS FET system Climate control unit malfunction |
TROUBLESHOOTING CHART
- When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while performing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, inspect make sure connectors, terminals and wiring harnesses are connected correctly and undamaged.
NO.3 AMOUNT OF AIR BLOWN FROM REAR VENTS DOES NOT CHANGE [FULL-AUTO AIR CONDITIONER]
| 3 | Insufficient air (or no air) blown from vents |
|---|---|
| DESCRIPTION | Problem with each rear vent. It does not go out of rear though it goes out of the reception desk normally. |
| POSSIBLE CAUSE | Malfunction in rear vent fan switch. Malfunction in rear vent system. Open or short to rear fan switch connector and climate control unit connector. Malfunction in climate control unit. Malfunction in rear vent actuator. Open or short to rear vent actuator and climate control unit connector. |
TROUBLESHOOTING CHART
- When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while performing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, inspect to make sure connectors, terminals and wiring harnesses are connected correctly and undamaged.
NO.4 AIR INTAKE MODE DOES NOT CHANGE [FULL-AUTO AIR CONDITIONER]
| 4 | Air intake mode does not change. |
|---|---|
| DESCRIPTION | Air intake mode does not change when switching REC/FRESH mode. |
| POSSIBLE CAUSE | Air intake actuator malfunction Air intake door malfunction |
TROUBLESHOOTING CHART
- When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while performing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, inspect to make sure connectors, terminals and wiring harnesses are connected correctly and undamaged.
NO.5 NO TEMPERATURE CONTROL WITH CLIMATE CONTROL UNIT [FULL-AUTO AIR CONDITIONER]
| 5 | No temperature control with climate control unit |
|---|---|
| DESCRIPTION | Malfunction in A/C unit and/or climate control unit air intake system |
| POSSIBLE CAUSE | A/C unit air intake link, air intake crank, air intake rod, air intake wire, wire clamp malfunction Climate control unit rack-and-pinion, air intake wire malfunction A/C unit air intake door malfunction Heater piping malfunction |
TROUBLESHOOTING CHART
NO.6 WINDSHIELD FOGGED [FULL-AUTO AIR CONDITIONER]
- When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while doing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, inspect to make sure connectors, terminals and wiring harness are connected correctly and undamaged.
| 6 | Windshield fogged. |
|---|---|
| DESCRIPTION | A/C compressor does not operate while airflow mode is in DEFROSTER or HEAT/DEF modes. Air intake mode does not change to FRESH while airflow mode is in DEFROSTER or HEAT/DEF modes. |
| POSSIBLE CAUSE | Climate control unit (B+ signal) system malfunction Air intake actuator malfunction Climate control unit (RECIRCULATE, FRESH signal) system malfunction A/C unit air intake door malfunction |
TROUBLESHOOTING CHART
NO.7 AIR FROM VENTS NOT COLD ENOUGH [FULL-AUTO AIR CONDITIONER]
| 7 | Air from vents not cold enough. |
|---|---|
| DESCRIPTION | Magnetic clutch operates but A/C system malfunctions. |
| POSSIBLE CAUSE | Drive belt malfunction A/C unit or condenser malfunction Receiver/drier or expansion valve malfunction (valve closes too much) Malfunction in refrigerant lines A/C compressor system malfunction, insufficient compressor oil Over filling of compressor oil, malfunction in expansion valve or A/C unit air mix link system |
TROUBLESHOOTING CHART
NO.8 NO COOL AIR [FULL-AUTO AIR CONDITIONER]
| 8 | No cool air |
|---|---|
| DESCRIPTION | Magnetic clutch does not operate. |
| POSSIBLE CAUSE | Malfunction in PCM A/C cut control system Malfunction in climate control unit Malfunction in refrigerant pressure switch Malfunction in PCM (A/C signal) Malfunction in PCM (IG1 signal) Malfunction in A/C compressor Malfunction in A/C relay Malfunction in evaporator temperature sensor Malfunction in CAN communication |
TROUBLESHOOTING CHART
- When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while performing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, check to make sure connectors, terminals and wiring harnesses are connected correctly and undamaged.
FOREWORD [MANUAL AIR CONDITIONER]
- The areas for inspection (steps) are given according to various circuit malfunctions. Use the following chart to verify the symptoms of the trouble in order to diagnose the appropriate area.
NO.1 INSUFFICIENT AIR (OR NO AIR) BLOWN FROM VENTS [MANUAL AIR CONDITIONER]
| 1 | Insufficient air (or no air) blown from vents |
|---|---|
| DESCRIPTION | Problem with each vent and/or duct. Airflow mode does not change. |
| POSSIBLE CAUSE | Malfunction in airflow mode actuator Malfunction in VENT mode system Malfunction in HEAT mode system Malfunction in DEFROSTER mode system |
TROUBLESHOOTING CHART
NO.2 AMOUNT OF AIR BLOWN FROM VENTS DOES NOT CHANGE [MANUAL AIR CONDITIONER]
| 2 | Amount of air blown from vents does not change. |
|---|---|
| DESCRIPTION | Malfunction in blower system |
| POSSIBLE CAUSE | A/C unit malfunction Blower motor malfunction |
TROUBLESHOOTING CHART
NO.3 AIR INTAKE MODE DOES NOT CHANGE [MANUAL AIR CONDITIONER]
| 3 | Air intake mode does not change. |
|---|---|
| DESCRIPTION | Air intake mode does not change when switching REC/FRESH mode. |
| POSSIBLE CAUSE | Air intake actuator malfunction Air intake door malfunction |
TROUBLESHOOTING CHART
- When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while performing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, inspect to make sure connectors, terminals and wiring harnesses are connected correctly and undamaged.
NO.4 NO TEMPERATURE CONTROL WITH CLIMATE CONTROL UNIT [MANUAL AIR CONDITIONER]
| 4 | No temperature control with climate control unit |
|---|---|
| DESCRIPTION | Malfunction in A/C unit and/or climate control unit air intake system |
| POSSIBLE CAUSE | A/C unit air intake link, air intake crank, air intake rod, air intake wire, wire damp malfunction Climate control unit rack-and-pinion, air intake wire malfunction A/C unit air intake door malfunction Heater piping malfunction |
TROUBLESHOOTING CHART
NO.5 WINDSHIELD FOGGED [MANUAL AIR CONDITIONER]
| 5 | Windshield fogged. |
|---|---|
| DESCRIPTION | A/C compressor does not operate while airflow mode is in DEFROSTER or HEAT/DEF modes. Air intake mode does not change to FRESH while airflow mode is in DEFROSTER or HEAT/DEF modes. |
| POSSIBLE CAUSE | Climate control unit (B+ signal) system malfunction Air intake actuator malfunction Climate control unit (RECIRCULATE, FRESH signal) system malfunction A/C unit air intake door malfunction |
TROUBLESHOOTING CHART
- When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while doing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, inspect to make sure connectors, terminals and wiring harness are connected correctly and undamaged.
NO.6 AIR FROM VENTS NOT COLD ENOUGH [MANUAL AIR CONDITIONER]
| 6 | Air from vents not cold enough. |
|---|---|
| DESCRIPTION | Magnetic clutch operates but A/C system malfunctions. |
| POSSIBLE CAUSE | Drive belt malfunction A/C unit or condenser malfunction Receiver/drier or expansion valve malfunction (valve closes too much) Malfunction in refrigerant lines A/C compressor system malfunction, insufficient compressor oil Over filling of compressor oil, malfunction in expansion valve or A/C unit air mix link system |
TROUBLESHOOTING CHART
NO.7 NO COOL AIR [MANUAL AIR CONDITIONER]
| 7 | No cool air |
|---|---|
| DESCRIPTION | Magnetic clutch does not operate. |
| POSSIBLE CAUSE | Malfunction in PCM A/C cut control system Malfunction in climate control unit Malfunction in refrigerant pressure switch Malfunction in PCM (A/C signal) Malfunction in PCM (IG1 signal) Malfunction in A/C compressor Malfunction in A/C relay Malfunction in evaporator temperature sensor Malfunction in BCM unit Malfunction in CAN communication |
TROUBLESHOOTING CHART
- When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while performing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, check to make sure connectors, terminals and wiring harnesses are connected correctly and undamaged.