AIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTIONAIR CONDITIONING SYSTEM PRECAUTION
AIR CONDITIONING – AIR CONDITIONING SYSTEM AC–1 AIR CONDITIONING SYSTEM PRECAUTION NOTICE: When the cable is disconnected from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected System name See procedure METER / GAUGE SYSTEM See page ME-10 Cable Negative (-) Battery Terminal D033496E01 Before performing electronic work, disconnect the cable from the negative (-) battery terminal in order to prevent it from shorting and burning out Before disconnecting and reconnecting the battery cable, turn the ignition switch OFF and the headlight dimmer switch OFF Then loosen the terminal nut completely Do not damage the cable or terminal When the battery cable is disconnected, the clock and radio settings and stored DTCs are erased Therefore, before disconnecting the battery cable, make a notes of them CONNECT THE BATTERY NEGATIVE TERMINAL TO THE CABLE AND RUN THE ENGINE AT NO LESS THAN 2,000 RPM FOR 2MINUTE NOTICE: If the engine exceeds 2,000 rpm, the clutch is automatically disengaged by the compressor protection control system DO NOT HANDLE REFRIGERANT IN ENCLOSED AREAS OR NEAR OPEN FLAMES ALWAYS WEAR EYE PROTECTION Charging Cylinder AC02810E02 AC02811E01 BE CAREFUL NOT TO GET LIQUID REFRIGERANT IN YOUR EYES OR ON YOUR SKIN If liquid refrigerant gets in your eyes or on your skin: (a) Wash the area with lots of cold water CAUTION: Do not rub your eyes or skin (b) Apply clean petroleum jelly to the skin (c) Go immediately to a hospital or a physician for professional treatment NEVER HEAT CONTAINER OR EXPOSE THE CONTAINER TO OPEN FLAME BE CAREFUL NOT TO DROP CONTAINER OR APPLY ANY PHYSICAL SHOCKS TO IT AC AC–2 AIR CONDITIONING – AIR CONDITIONING SYSTEM Wrong Okay LO LO HI HI N011084E04 AC DO NOT OPERATE COMPRESSOR WITHOUT ENOUGH REFRIGERANT IN REFRIGERANT SYSTEM If there is not enough refrigerant in the refrigerant system, oil lubrication will be insufficient and compressor burnout may occur Necessary care should be taken to avoid this DO NOT OPEN HIGH PRESSURE MANIFOLD VALVE WHILE COMPRESSOR IS OPERATING Open and close only the low pressure valve If the high pressure valve is open, refrigerant flows in the reverse direction This could cause the charging cylinder to rupture BE CAREFUL NOT TO OVERCHARGE SYSTEM WITH REFRIGERANT If refrigerant is overcharged, it causes problems such as insufficient cooling, poor fuel economy, engine overheating, etc 10 DO NOT OPERATE ENGINE AND COMPRESSOR WITH NO REFRIGERANT CAUTION: Doing so may damage the inside of the compressor because the compressor parts always move regardless of whether the A/C system is turned on or off 11 SUPPLEMENTAL RESTRAINT SYSTEM (SRS) (a) This vehicle is equipped with an SRS (Supplemental Restraint System) such as the driver, front passenger, side, and curtain shield air bags Failure to carry out service operation in the correct sequence could cause the SRS to unexpectedly deploy during servicing, possibly leading to a serious accident Before servicing (including removal or installation of parts, inspection or replacement), be sure to read the precautionary notices (see page RS-1) 12 GENERAL PRECAUTION (a) While using the battery during inspection, not bring the positive and negative tester probes too close to each other as a short circuit may occur AIR CONDITIONING – AIR CONDITIONING SYSTEM AC–3 PARTS LOCATION PRESSURE SWITCH AC ENGINE ROOM R/B NO.2 - HEATER RELAY - MG CLT RELAY CONDENSER - HEATER FUSE AMBIENT TEMPERATURE SENSOR COMPRESSOR AND MAGNETIC CLUTCH - ECU-B FUSE ECM MAIN BODY ECU (DRIVER SIDE J/B) - IG1 FUSE INTEGRATION CONTROL AND PANEL - AIR CONDITIONING AMPLIFIER - BLOWER SWITCH - A/C SWITCH I102678E01 AC–4 AIR CONDITIONING – AIR CONDITIONING SYSTEM COOLER EXPANSION VALVE EVAPORATOR MODE CONTROL SERVO MOTOR AIR INLET CONTROL SERVO MOTOR COOLER THERMISTOR NO.1 (EVAPORATOR TEMPERATURE SENSOR) AC BLOWER MOTOR BLOWER RESISTOR HEATER RADIATOR UNIT SUB-ASSEMBLY AIR MIX CONTROL SERVO MOTOR I102677E01 AC–5 AIR CONDITIONING – AIR CONDITIONING SYSTEM SYSTEM DIAGRAM ECU-B 10A IG1 15A Ignition Switch HEATER 60A B MG CLT IG+ FRS Battery MGC REC LOCK AMC SG-3 AMH Air Inlet Control Servo motor Air Mix Control Servo motor S5-1 TP SG-2 Cooler Compressor and Magnet Clutch HEATER BLW Pressure Switch Blower Motor FACE DEF S5 TPM SG-1 Mode Control Servo motor Evaporator Temperature Sensor PSW RLO SG-4 Blower Resistor RHI HI M2 M2 E M1 M1 GND TE P-S5 P-SG P-MSET P-TSET P-GND P-GND P-A/C P-REC P-RDEF P-A/CD P-RECD P-RDFD P-IG+ Ambient Temperature Sensor TAM TAMG ACT AC1 TACO TW ECM GND Heater Control Air Conditioning Control Assembly I102674E01 AC AC–6 AIR CONDITIONING – AIR CONDITIONING SYSTEM PROBLEM SYMPTOMS TABLE HINT: • Use the table below to help determine the cause of the problem symptom The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table Check each symptom by checking the suspected areas in the order they are listed Replace parts as necessary • Inspect the fuses and relays related to this system before inspecting the suspected areas below • If the malfunction still exists even after checking and confirming that all the circuits are normal, replace the A/C amplifier Air conditioning system AC Symptom No Cool Air Comes Out: Compressor Not Operating Suspected area AC-12 Pressure switch AC-104 Magnetic clutch AC-88 Air conditioning amplifier assembly AC-8 Compressor pick up sensor AC-88 Cooler compressor AC-88 Wire harness or connector HTR fuse No Cool Air Comes Out: Blower Not Operating Blower resistor AC-83 Blower motor AC-81 Air conditioning panel assembly AC-110 Wire harness or connector AC-44 Air conditioning panel assembly AC-110 Volume of refrigerant AC-12 AC-81 Air mix damper servo full travel check AC-44 Recirculation damper servo operation check AC-74 Idling control system AC-8 ES-251 Wire harness or connector - HTR fuse - Heater relay AC-106 Blower resistor AC-83 Blower motor AC-81 Air conditioning panel assembly AC-110 Wire harness or connector No Warm Air Comes Out: Air Mix Damper Servo Not Operating - Blower motor performance check IG1 fuse No Warm Air Comes Out: Blower Not Operating AC-8 Air mix control servo motor Air conditioning amplifier assembly No Engine Idle-up when A/C Switch ON AC-106 Wire harness or connector No Cool Air Comes Out: Insufficient Cooling - Heater relay Air conditioning amplifier assembly No Cool Air Comes Out: Air Mix Damper Servo Not Operating See page Volume of refrigerant - Air mix control servo motor AC-44 Air conditioning panel assembly AC-110 Wire harness or connector - AC–7 AIR CONDITIONING – AIR CONDITIONING SYSTEM Symptom Suspected area Volume of engine coolant No Warm Air Comes Out: Insufficient Cooling Air Not Coming From Desired Outlets: Air Mix Damper Servo Not Operating AC-110 Blower motor performance check AC-81 Air mix damper servo full travel check AC-44 Recirculation damper servo operation check AC-74 Heater radiator - HTR fuse - AC-106 Blower resistor AC-83 Blower motor AC-81 Air conditioning panel assembly AC-106 Wire harness or connector - Air mix control servo motor AC-44 Wire harness or connector - AC-12 Magnetic clutch AC-88 Cooler thermistor sensor AC-44 Air conditioning amplifier assembly AC-8 Compressor pick up sensor AC-88 Cooler compressor AC-88 HTR fuse Defrosting Insufficient: Noise: Noise: AC-106 Blower resistor AC-83 Blower motor AC-81 Air conditioning panel assembly AC-110 - Air mix control servo motor AC-44 Air conditioning panel assembly AC-110 Wire harness or connector Windshield Fogging: Insufficient Cooling - Heater relay Wire harness or connector Windshield Fogging: Air Mix Damper Servo Not Operating - Volume of refrigerant Wire harness or connector Windshield Fogging: Blower Not Operating - Heater relay IG1 fuse Windshield Fogging: Compressor Not Operating CO-3 Air conditioning panel assembly IG1 fuse Air Not Coming From Desired Outlets: Blower Not Operating See page - Volume of refrigerant AC-12 Blower motor performance check AC-81 Air mix damper servo full travel check AC-44 Recirculation damper servo operation check AC-74 Blower motor AC-81 Mode doors: Check cooling, heating & door operation - Mode control servo motor: Hot air not coming, Go to no warm air comes out - Mode control servo motor: Cold air not coming, Go to no cold air comes out - Blower motor: Inspect blower motor for debris/cracks - Fresh air intake area: Inspect fresh air intake area for debris - Cooler compressor: Cooler compressor incorrectly fitted AC-90 Magnetic clutch AC-88 Refrigerant charge amount AC-20 Compressor mounting bracket: Compressor mounting bracket incorrectly fitted EM-27 A/C lines secure & not grounded - AC AC–8 AIR CONDITIONING – AIR CONDITIONING SYSTEM Symptom Odor (Cycle through blower speed, mode, temperature to define odor type when engine is running and A/C switch is ON (Musty smell, coolant oil smell)) Air Not Coming from Desired Outlets (Cycle the mode lever and check airflow for outlets when engine is running, A/C switch is ON.) Suspected area - A/C drain tube: Inspect for water, engine coolant or oil leaks - Fresh air intake area: Inspect for water, engine coolant or oil leaks - Heater hose: Inspect for water, engine coolant or oil leaks - Evaporator: Inspect for water, engine coolant or oil leaks - Evapo case: Inspect for water, engine coolant or oil leaks - Blower motor AC-81 Mode control servo motor AC-44 Mode doors: Check cooling, heating & door operation - Wire harness or connector - Air conditioning panel assembly AC See page Wet carpet: Inspect for water, engine coolant or oil leaks AC-110 AIR CONDITIONING – AIR CONDITIONING SYSTEM AC–9 TERMINALS OF ECU INSPECT AIR CONDITIONING AMPLIFIER ASSEMBLY (a) Disconnect the E32 and E33 connectors from the air conditioning amplifier assembly and inspect the connector on the wire harness side, as shown in the table below E33 E32 AC I102676E01 Standard: Symbols (Terminals No.) Wiring Colors Terminal Descriptions Conditions Specified Condition IG+ (E32-1) - GND (E3220) Y-R - W-B Power source (IG) Ignition switch: OFF → ON Below 1.0 → 11 to 14 V B (E32-11) - GND (E3220) W-R - W-B Power source (Back-up) Always 11 to 14 V SG-1 (E33 - 17) - Body ground V-G - Body ground Ground for mode control servo motor Always Below 1.0 Ω SG-2 (E33 - 18) - Body ground Y-G - Body ground Ground for air mix control servomotor Always Below 1.0 Ω SG-3 (E33 - 6) - Body ground G-Y - Body ground Ground for lock sensor Always Below 1.0 Ω SG-4 (E32 - 9) - Body ground GR-G - Body ground Ground for A/C evaporator temperature sensor Always Below 1.0 Ω TAMG (E33 - 16) - Body ground GR - Body ground Ground for ambient temperature sensor Always Below 1.0 Ω GND (E32-20) - Body ground W-B - Body ground Ground for main power supply Always Below 1.0 Ω If the results are not as specified, inspect the circuits connected to the other parts (b) Reconnect the E32 and E33 connectors to the air conditioning amplifier assembly and inspect the wire harness side connector from the back side, as shown in the table below E33 E32 I102675E01 AC–10 AIR CONDITIONING – AIR CONDITIONING SYSTEM Standard: AC Symbols (Terminals No.) Wiring Colors Terminal Descriptions Conditions Specified Condition DEF (E33-9) - GND (E3220) LG - W-B Mode switch signal Ignition switch: ON Mode select switch: Except DEF → DEF Below 1.5 → 11 to 14 V LOCK (E33-8) - SG-3 (E33-6) R-W - G-Y Magnet clutch signal Start engine Operate A/C system Magnet clutch: ON Pulse generation (See waveform 1) ACI (E33-24) - GND (E3220) G-W - W-B Idle up request signal Engine idling Operate A/C system Magnet clutch: OFF → ON 11 to 14 → Below 1.0 V FRS (E32-6) - GND (E3220) V-W - W-B Recirculation/Fresh switch signal Ignition switch: ON Recirculation/Fresh switch: RECIRCULATION → FRESH 11 to 14 → Below 1.0 V REC (E32-7) - GND (E3220) P-B - W-B Recirculation/Fresh switch signal Ignition switch: ON Recirculation/Fresh switch: FRESH → RECIRCULATION 11 to 14 → Below 1.0 V MGC (E32-4) - GND (E3220) LG-B - W-B Magnet clutch relay signal Engine idling Operate A/C system Magnet clutch: OFF → ON 11 to 14 → Below 1.0 V PSW (E33-22) - GND (E32-20) LG-R - W-B A/C pressure switch signal Start engine Operate A/C system Refrigerant pressure: Normal (Less than 0.196 MPa (2.0 kgf/ 11 to 14 → Below 1.0 V cm2)) or more than 3.14 MPa (32.0 kgf/cm2)) BLW (E32-8) - GND (E3220) Y - W-B Blower switch signal Ignition switch: ON Blower switch: ON OFF → ON (LO, M1, M2, HI) 11 to 14 → Below 1.0 V TE (E32-10) - SG-4 (E329) B - GR-G A/C evaporator temperature sensor signal Ignition switch: ON Evaporator temperature: → 15°C (32 → 59°F) 1.7 to 2.1 → 0.9 to 1.3 V TAM (E33-13) - TAMG (E33-16) Y - GR Ambient temperature sensor signall Ignition switch: ON Ambient temperature: 25 → 40°C (77 → 104°F) 1.7 to 2.1 → 1.3 to 1.8 V RDFG (E32-5) - GND (E32-20) Y-V - W-B Defogger switch signal Ignition switch: ON Defogger switch: OFF → ON 11 to 14 → Below 1.0 V S5 (E33-19) - SG-1 (E3317) P - V-G Power supply for mode control servo motor Ignition switch: OFF → ON to 5.0 V S5-1 (E33-7) - SG-2 (E3318) P-B - Y-G Power supply for air mix control servomotor Ignition switch: OFF → ON to 5.0 V SG-1 (E33 - 17) - Body ground V-G - Body ground Ground for mode control servo motor Always Below 1.0 Ω SG-2 (E33 - 18) - Body ground Y-G - Body ground Ground for air mix control servomotor Always Below 1.0 Ω SG-3 (E33 - 6) - Body ground G-Y - Body ground Ground for lock sensor Always Below 1.0 Ω SG-4 (E32 - 9) - Body ground GR-G - Body ground Ground for A/C evaporator temperature sensor Always Below 1.0 Ω TAMG (E33 - 16) - Body ground GR - Body ground Ground for ambient temperature sensor Always Below 1.0 Ω GND (E32-20) - Body ground W-B - Body ground Ground for main power supply Always Below 1.0 Ω IG+ (E32-1) - Body ground Y-R - Body ground Power source (IG) Ignition switch: OFF → ON Below 1.0 → 11 to 14 V B (E32-11) - Body ground W-R - Body ground Power source (Back-up) Always 11 to 14 V AC–100 AIR CONDITIONING – CONDENSER INSTALL AIR CONDITIONING TUBE ASSEMBLY (a) Remove the attached vinyl tape from the pipe and the connecting part of the cooler condenser (b) Apply sufficient compressor oil to a new O-ring and the fitting surface of the pipe joint Compressor oil: ND-OIL8 or the equivalent (c) Install the O-ring onto the air conditioning tube (d) Install the tube onto the condenser with the bolt Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) INSTALL DISCHARGE HOSE SUB-ASSEMBLY (a) Remove the attached vinyl tape from the hose and the connecting part of the cooler condenser (b) Apply sufficient compressor oil to a new O-ring and the fitting surface of the hose joint Compressor oil: ND-OIL8 or the equivalent (c) Install the O-ring onto the discharge hose (d) Install the discharge hose onto the condenser with the bolt Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) INSTALL FRONT BUMPER COVER (See page ET-10) INSTALL RADIATOR GRILLE (See page ET-11) CONNECT CABLE TO NEGATIVE BATTERY TERMINAL Torque: 3.9 N*m (40 kgf*cm, 35 in.*lbf) I102482 AC I102481 10 CHARGE REFRIGERANT (See page AC-16) 11 WARM UP ENGINE (See page AC-18) 12 CHECK FOR REFRIGERANT LEAKAGE (See page AC-18) AIR CONDITIONING – AMBIENT TEMPERATURE SENSOR AC–101 AMBIENT TEMPERATURE SENSOR HEATER AIR CONDITIONING & AIR CONDITIONING SYSTEM COMPONENTS AC AMBIENT TEMPERATURE SENSOR I102491E01 AC–102 AIR CONDITIONING – AMBIENT TEMPERATURE SENSOR REMOVAL DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL REMOVE AMBIENT TEMPERATURE SENSOR (a) Disconnect the connector (b) Disengage the clamp and remove the ambient temperature sensor I102494 AC INSPECTION Sensor Area Resistance (kΩ) 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 10 50 20 68 30 86 40 104 50 q% 60(°C) 140 q( (°F) 122 Temperature E106870E06 INSPECT AMBIENT TEMPERATURE SENSOR (a) Measure the resistance Standard resistance Tester Connection Condition Specified Condition 1-2 10°C (50°F) 3.00 to 3.73 kΩ 1-2 15°C (59°F) 2.45 to 2.88 kΩ 1-2 20°C (68°F) 1.95 to 2.30 kΩ 1-2 25°C (77°F) 1.60 to 1.80 kΩ 1-2 30°C (86°F) 1.28 to 1.47 kΩ 1-2 35°C (95°F) 1.00 to 1.22 kΩ 1-2 40°C (104°F) 0.80 to 1.00 kΩ 1-2 45°C (113°F) 0.65 to 0.85 kΩ 1-2 50°C (122°F) 0.50 to 0.70 kΩ 1-2 55°C (131°F) 0.44 to 0.60 kΩ 1-2 60°C (140°F) 0.36 to 0.50 kΩ NOTICE: • Touching the sensor even slightly may change the resistance value Hold the connector of the sensor • When measuring the resistance, the temperature of the sensor and the ambient temperature sensor must be the same HINT: As the temperature increases, the resistance decreases (see the graph) AIR CONDITIONING – AMBIENT TEMPERATURE SENSOR AC–103 INSTALLATION INSTALL AMBIENT TEMPERATURE SENSOR (a) Engage the clamp and install the ambient temperature sensor (b) Connect the connector CONNECT CABLE TO NEGATIVE BATTERY TERMINAL Torque: 3.9 N*m (40 kgf*cm, 35 in.*lbf) I102494 AC AC–104 AIR CONDITIONING – PRESSURE SWITCH PRESSURE SWITCH ON-VEHICLE INSPECTION ON (Below 1.0 Ω) 196 KPa 3,140 KPa (2.0 kgf*cm2, 28 psi) (32.0 kgf*cm2, 455 psi) OFF OFF (10 kΩ or higher) AC (10 kΩ or higher) I040666E04 INSPECT PRESSURE SWITCH HINT: • The pressure switch is installed onto the air conditioning pipe on the high pressure side • The switch detects drops in refrigerant pressure, such as from refrigerant leakage, and turns the magnet clutch off (*1) to prevent damage to the compressor • The switch detects abnormally high pressure in the air conditioning cycle and turns the magnet clutch off (*1) to prevent damage to parts of the air conditioning cycle (*1): The ECM turns the magnet clutch on or off upon receiving the signal from the pressure switch • As the pressure switch operates when there is a malfunction with the refrigerant pressure, its function cannot be inspected on-vehicle Follow the procedures below to inspect it (a) Inspect the refrigerant pressure in the air conditioning cycle (b) Read the manifold gauge pressure when the conditions below are established (*2) Test conditions: • Engine running at 1,500 rpm • Blower speed control knob in HI position • Temperature control knob in COOL position • Air conditioning switch ON • Recirculation mode • Doors fully open Standard: Pressure on high pressure side: 1.37 to 1.57 MPa (13.9 to 16.0 kgf*cm2, 198 to 228 psi) HINT: • If the refrigerant pressure is not within the standard range, inspect and repair the air conditioning cycle (See Page AC-12) • Proceed to step (*2) if the refrigerant pressure is within the specified range • If the refrigerant pressure is below 196 KPa (2.0 kgf*cm2, 28 psi), the refrigerant amount in the air conditioning cycle may have decreased significantly for reasons such as a gas leakage AIR CONDITIONING – PRESSURE SWITCH Pressure Switch Connector Wire Harness View: A19 I036436E03 AC–105 (c) Check the air conditioning operation (1) Disconnect the pressure switch connector (2) Connect terminals and of the pressure switch connector on the vehicle wire harness side using a service wire (3) Start the engine (4) Turn the air conditioning switch on and check that the magnet clutch is turned on (5) Check that the magnet clutch is turned off when disconnecting terminals and (those connected in the prior step) Standard: Terminals and connected: Magnet clutch is ON Terminals and disconnected: Magnet clutch is OFF Replace the pressure switch if the magnet clutch operates normally Inspect and repair the wire harness between the pressure switch and the ECM AC AC–106 AIR CONDITIONING – HEATER BLOWER MOTOR RELAY HEATER BLOWER MOTOR RELAY ON-VEHICLE INSPECTION Battery INSPECT HEATER BLOWER MOTOR RELAY ASSEMBLY (a) Check the resistance (1) Using an ohmmeter, measure the resistance between the terminals Standard resistance Tester Connection 3-4 Below Ω 3-4 10 kΩ or higher (Apply battery voltage to terminals and 2) 3-5 10 kΩ or higher 3-5 Below Ω (Apply battery voltage to terminals and 2) AC Ohmmeter Ohmmeter E106620E01 Specified Condition If the result is not as specified, replace the relay AC–107 AIR CONDITIONING – MAGNETIC CLUTCH RELAY MAGNETIC CLUTCH RELAY ON-VEHICLE INSPECTION Battery Ohmmeter I100429E01 INSPECT MAGNET CLUTCH RELAY (a) Check the resistance (1) Using an ohmmeter, measure the resistance between the terminals Standard resistance Tester Connection Specified Condition 3-5 10 kΩ or higher 3-5 Below Ω (Apply battery voltage to terminals and 2) If the result is not as specified, replace the relay AC AC–108 AIR CONDITIONING – INTEGRATION CONTROL AND PANEL INTEGRATION CONTROL AND PANEL HEATER AIR CONDITIONING & AIR CONDITIONING SYSTEM COMPONENTS INSTRUMENT PANEL GARNISH LH INSTRUMENT PANEL GARNISH RH AC INTEGRATION CONTROL AND PANEL ASSEMBLY REAR PANEL AIR CONDITIONER AMPLIFIER ASSEMBLY INTEGRATION CONTROL AND PANEL B133885E01 AIR CONDITIONING – INTEGRATION CONTROL AND PANEL AC–109 REMOVAL DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL REMOVE INSTRUMENT PANEL GARNISH LH (See page IP-10) REMOVE INSTRUMENT PANEL GARNISH RH (See page IP-10) REMOVE INTEGRATION CONTROL AND PANEL ASSEMBLY (a) Remove the screws (b) Disengage the clips and remove the integration control assembly (c) Disconnect the connectors B133888 DISASSEMBLY REMOVE AIR CONDITIONER AMPLIFIER ASSEMBLY (a) Remove the screws (b) Disengage the claws and remove the rear panel I102504 (c) Disengage the lock of the connector and disconnect the cable (d) Remove the air conditioner amplifier assembly I102505 AC AC–110 AIR CONDITIONING – INTEGRATION CONTROL AND PANEL INSPECTION LO M1 M2 OFF HI Ohmmeter AC INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY (a) Check the blower switch resistance (1) Using an ohmmeter, measure the resistance and check the results in accordance with the values in the table below Standard resistance Tester connection Blower Switch Position Specified Condition 1-4-5-6-8 OFF 10 KΩ or higher 1-8 LO Below Ω 1-6-8 M1 Below Ω 1-5-8 M2 Below Ω 1-4-8 HI Below Ω If the result is not as specified, replace the integration control and panel assembly I102515E01 (b) Inspect the illumination operation (1) Connect the positive (+) lead from the battery to terminals (IG+) and (ILL+) and the negative (-) lead to terminal 20 (GND), then check that the illuminations light up Standard: Illuminations light up If the result is not as specified, replace the integration control and panel assembly Battery I102507E01 (c) Inspect the A/C indicator operation (1) Connect the positive (+) lead from the battery to terminal (IG+) and the negative (-) lead to terminals (BLW) and 20 (GND) (2) Push the A/C button in and then check that the indicator lights up Standard Battery I102508E01 Switch Condition Specified Condition Switch ON Indicator illuminates Switch OFF Indicator turns off AC–111 AIR CONDITIONING – INTEGRATION CONTROL AND PANEL HINT: Inspect the A/C indicator operation in any position except MAX COOL The A/C indicator ON/OFF operation does not function in MAX COOL position (The A/C indicator is held in ON state) If the result is not as specified, replace the integration control and panel assembly (3) Under the above condition, connect the positive (+) lead from the battery to terminal (ILL+) and then check that the indicator dims Standard Switch Condition Battery I102509E01 Specified Condition Switch ON Indicator dims Switch OFF Indicator turns off HINT: Inspect the A/C indicator operation in any position except MAX COOL The A/C indicator ON/OFF operation does not function in MAX COOL position (The A/C indicator is held in ON state) If the result is not as specified, replace the integration control and panel assembly (d) Inspect the REC indicator operation (1) Connect the positive (+) lead from the battery to terminal (IG+) and the negative (-) lead to terminal 20 (GND) NOTICE: Inspect the MODE switch in any position except DEF (2) Push the REC button in and check that the indicator lights up Standard Battery I102510E01 Switch Condition Specified Condition Switch ON Indicator illuminates Switch OFF Indicator turns off If the result is not as specified, replace the integration control and panel assembly AC AC–112 AIR CONDITIONING – INTEGRATION CONTROL AND PANEL (3) Under the above condition, connect the positive (+) lead from the battery to terminal (ILL+) and then check that the indicator dims NOTICE: Inspect the MODE switch in any position except DEF Standard Switch Condition Specified Condition Switch ON Indicator dims Switch OFF Indicator turns off If the result is not as specified, replace the integration control and panel assembly Battery AC I102511E01 (e) Inspect the temperature control switch operation (1) Connect the positive (+) lead from the battery to terminal (IG+) and the negative (-) lead to terminals (BLW) and 20 (GND) NOTICE: Inspect the MODE switch in any position other than DEF and FOOT/DEF (2) Check the A/C indicator and REC indicator operations when the temperature switch is operated Standard Battery I102512E01 Temperature Switch Condition Specified Condition (A/C indicator and REC indicator) Except MAX A/C Neither indicator illuminates MAX A/C Both indicators illuminate*1 HINT: *1: The A/C indicator remains illuminated even after the temperature switch is turned from this position to another The REC indicator returns to the condition prior to turning the switch to MAX A/C Press the A/C switch in and check that the indicator turns off If the result is not as specified, replace the integration control and panel assembly AC–113 AIR CONDITIONING – INTEGRATION CONTROL AND PANEL (f) FOOT/DEF FOOT DEF B/L FACE Inspect MODE switch operation (1) Connect the positive (+) lead from the battery to terminal (IG+) and the negative (-) lead to terminal 20 (GND) (2) Check the REC indicator operation when the MODE switch is operated Standard Condition Specified Condition (REC indicator) MODE switch except DEF REC switch ON ←→ OFF Indicator turns ON ←→ OFF in accordance with REC switch operation MODE switch DEF REC switch ON ←→ OFF Indicator turns off If the result is not as specified, replace the integration control and panel assembly Battery I102514E01 REASSEMBLY INSTALL AIR CONDITIONER AMPLIFIER ASSEMBLY (a) Remove the air conditioner amplifier assembly (b) Engage the lock of the connector and connect the cable I102506 (c) Engage the claws and install the rear panel (d) Install the screws I102504 AC AC–114 AIR CONDITIONING – INTEGRATION CONTROL AND PANEL INSTALLATION AC B133888 INSTALL INTEGRATION CONTROL AND PANEL ASSEMBLY (a) Connect the connectors (b) Engage the clips and install the integration control assembly (c) Install the screws INSTALL INSTRUMENT PANEL GARNISH LH (See page IP-33) INSTALL INSTRUMENT PANEL GARNISH RH (See page IP-33) CONNECT CABLE TO NEGATIVE BATTERY TERMINAL Torque: 3.9 N*m (40 kgf*cm, 35 in.*lbf) ... in.*lbf) AIR CONDITIONING TUBE ASSEMBLY N*m (kgf*cm, ft*lbf) : Specified torque I102420E01 AC–21 AIR CONDITIONING – AIR CONDITIONING UNIT AIR CONDITIONING UNIT HEATER AIR CONDITIONING & AIR CONDITIONING. .. AC AC–28 AIR CONDITIONING – AIR CONDITIONING UNIT NO HEATER TO REGISTER DUCT NO HEATER TO REGISTER DUCT AC NO AIR DUCT NO AIR DUCT REAR NO AIR DUCT REAR NO AIR DUCT I102421E01 AC–29 AIR CONDITIONING. .. - Air conditioning panel assembly AC See page Wet carpet: Inspect for water, engine coolant or oil leaks AC-110 AIR CONDITIONING – AIR CONDITIONING SYSTEM AC–9 TERMINALS OF ECU INSPECT AIR CONDITIONING