Air Conditioning: Diagnosis Toyota Prius II рестайлинг

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use these procedures to troubleshoot the air conditioning system.
2. *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT
2. CUSTOMER PROBLEM ANALYSIS Confirm the problem symptoms. NEXT
3. CHECK AND CLEAR DTCS* NEXT
4. PROBLEM SYMPTOM CONFIRMATION Result RESULT REFERENCE Result Proceed to Symptom does not occur A Symptom occurs B B : GO TO STEP 6 A : Go to next step
5. SYMPTOM SIMULATION NEXT
6. CHECK MULTIPLEX COMMUNICATION SYSTEM* Check for the DTC outputs. Result RESULT REFERENCE Result Proceed to No multiplex DTC A Multiplex DTC output B B : GO TO MULTIPLEX COMMUNICATION SYSTEM
7. CHECK CAN COMMUNICATION SYSTEM* Result RESULT REFERENCE Result Proceed to No CAN DTC A CAN DTC output B B : GO TO CAN COMMUNICATION SYSTEM A : Go to next step
8. DTC CHECK (OTHER THAN MULTIPLEX DTC)* Result RESULT REFERENCE Result Proceed to Malfunction code A Normal code B B : GO TO STEP 10 A : Go to next step
9. DTC CHART NEXT
10. «PROBLEM SYMPTOMS TABLE»(ref-289870-S07489490512008070800000) NEXT
11. TERMINALS OF ECU NEXT
12. CIRCUIT INSPECTION NEXT
13. IDENTIFICATION OF PROBLEM NEXT
14. REPAIR OR REPLACE NEXT
15. CONFIRMATION TEST NEXT : END

PROBLEM SYMPTOMS TABLE

HINT

1. 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.
2. Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Air conditioning system

PROBLEM SYMPTOMS CHART

HINT

*: The PTC heater operation may be stopped when an electrical load is large on the entire vehicle.

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1. CHECK AIR CONDITIONING AMPLIFIER Measure the voltage and resistance of the connectors. HINT: Check from the rear of the connector while it is connected to the air conditioning amplifier. ECU TERMINALS VOLTAGE SPECIFICATIONS Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition AIR (A8-22) - GND (A8-1) G - W-B Recirculation / Fresh switch signal Power switch ON (IG) Recirculation / Fresh switch: FRESH Below 1 V AIR (A8-22) - GND (A8-1) G - W-B Recirculation / Fresh switch signal Power switch ON (IG) Recirculation / Fresh switch: RECIRC 10 to 14 V AIF (A8-23) - GND (A8-1) P - W-B Recirculation / Fresh switch signal Power switch ON (IG) Recirculation / Fresh switch: RECIRC Below 1 V AIF (A8-23) - GND (A8-1) P - W-B Recirculation / Fresh switch signal Power switch ON (IG) Recirculation / Fresh switch: FRESH 10 to 14 V AOF (A8-16) - GND (A8-1) B - W-B Mode switch signal Power switch ON (IG) Mode switch: DEF Below 1 V AOF (A8-16) - GND (A8-1) B - W-B Mode switch signal Power switch ON (IG) Mode switch: FACE 10 to 14 V AOD (A8-24) - GND (A8-1) Y - W-B Mode switch signal Power switch ON (IG) Mode switch: FACE Below 1 V AOD (A8-24) - GND (A8-1)Y - W-B Mode switch signal Power switch ON (IG) Mode switch: DEF 10 to 14 V TPI (A7-19) - SGTPI (A7-4) V - L Recirculation / Fresh switch signal Power switch ON (IG) Recirculation / Fresh switch: RECIRC 4 V TPI (A7-19) - SGTPI (A7-4) V - L Recirculation / Fresh switch signal Power switch ON (IG) Recirculation / Fresh switch: FRESH 1 V TPM (A7-18) - SGTPM (A7-23) LG - P Mode switch signal Power switch ON (IG) Mode switch: FACE 4 V TPM (A7-18) - SGTPM (A7-23) LG - P Mode switch signal Power switch ON (IG) Mode switch: DEF 1 V TP (A7-20) - SGTP (A7-14) L - LG Temperature switch signal Power switch ON (IG) Temperature switch: Max. COOL 4 V TP (A7-20) - SGTP (A7-14) L - LG Temperature switch signal Power switch ON (IG) Temperature switch: Max. HOT 1 V SGTE (A7-5) - Body ground Y - Body ground Ground for evaporator temperature sensor Always Below 1 ohms TE (A7-7) - SGTE (A7-5) B - Y Evaporator temperature sensor signal Power switch ON (IG) Evaporator temperature: 15°C (59°F) 2 to 2.4 V TE (A7-7) - SGTE (A7-5) B - Y Evaporator temperature sensor signal Power switch ON (IG) Evaporator temperature: 15°C (59°F) 1.4 to 1.8 V S5TPI (A7-3) - SGTPI (A7-4) B - L Power supply for air inlet damper position sensor Power switch ON (IG) 4.5 to 5.5 V AMC (A8-19) - GND (A8-1) B - W-B Temperature switch Power switch ON (IG) Temperature switch: Max. HOT Below 1 V AMC (A8-19) - GND (A8-1) B - W-B Temperature switch Power switch ON (IG) Temperature switch: Max. COOL 10 to 14 V AMH (A8-17) - GND (A8-1) R - W-B Temperature switch Power switch ON (IG) Temperature switch: Max. COOL Below 1 V AMH (A8-17) - GND (A8-1) R - W-B Temperature switch Power switch ON (IG) Temperature switch: Max. HOT 10 to 14 V SGTPI (A7-4) - Body ground L - Body ground Ground for air inlet damper position sensor Always Below 1 ohms SGTPM (A7-23) - Body ground P - Body ground Ground for air outlet damper position sensor Always Below 1 ohms SGTP (A7-14) - Body ground LG - Body ground Ground for air mix damper position sensor Always Below 1 ohms S5TPM (A7-11) - SGTPM (A7-23) O - P Power supply for air outlet damper position sensor signal Power switch ON (IG) 4.5 to 5.5 V S5TP (A7-13) - SGTP (A7-14) P - LG Power supply for air mix damper position sensor signal Power switch ON (IG) 4.5 to 5.5 V IG (A8-5) - GND (A8-1) B - W-B Power switch signal Power switch control OFF 0 V IG (A8-5) - GND (A8-1) B - W-B Power switch signal Power switch control ON (ACC) 10 to 14 V +B (A8-6) - GND (A8-1) Y - W-B Back-up power source Always 10 to 14 V MPX+ (A8-3) - GND (A8-1) B - W-B Terminal for BEAN Engine idling after engine warmed up Pulse generation MPX2+ (A8-11) - GND (A8-1) GR - W-B Terminal for BEAN Engine idling after engine warmed up Pulse generation GND (A8-1) - Body ground W-B - Body ground Ground for main power supply Always Below 1 ohms BLW (A8-2) - GND (A8-1) W - W-B Blower switch signal Power switch ON (IG) Blower switch ON (IG) Pulse generation (see «ITEM AND CONTENT REFERENCE»(ref-289870-S19454947602008070800000) ) S5TS (A7-12) - TS (A7-21) GR - W-B Solar sensor signal Power switch ON (IG) 0.8 to 4.3 V HR (A8-7) - GND (A8-1) B - W-B Blower switch signal Power switch ON (IG) Blower switch: OFF 10 to 14 V HR (A8-7) - GND (A8-1) B - W-B Blower switch signal Power switch ON (IG) Blower switch: ON Below 1 V TR (A7-8) - SGTR (A7-22) B - W Room temperature sensor signal Power switch ON (IG) Cabin temperature: 25°C (77°F) 1.8 to 2.2 V TR (A7-8) - SGTR (A7-22) B - W Room temperature sensor signal Power switch ON (IG) Cabin temperature: 40°C (104°F) 1.2 to 1.6 V SGTR (A7-22) - Body ground W - Body ground Ground for room temperature sensor Always Below 1 ohms ST1 (A7-2) - SGST (A7-15) BR - G Steering pad switch signal Power switch ON (IG) Steering pad switch: Fr. DEF Below 0.3 V ST1 (A7-2) - SGST (A7-15) BR - G Steering pad switch signal Power switch ON (IG) Steering pad switch: Rr. DEF 0.8 to 1.5 V ST1 (A7-2) - SGST (A7-15) BR - G Steering pad switch signal Power switch ON (IG) Steering pad switch: Recirculation/Fresh 2 to 2.9 V ST1 (A7-2) - SGST (A7-15) BR - G Steering pad switch signal Power switch ON (IG) Steering pad switch: OFF Above 4.6 V ST2 (A7-1) - SGST (A7-15) LG - G Steering pad switch signal Power switch ON (IG) Steering pad switch: AUTO Below 0.3 V ST2 (A7-1) - SGST (A7-15) LG - G Steering pad switch signal Power switch ON (IG) Steering pad switch: TEMP+ 0.8 to 1.5 V ST2 (A7-1) - SGST (A7-15) LG - G Steering pad switch signal Power switch ON (IG) Steering pad switch: TEMP- 2 to 2.9 V ST2 (A7-1) - SGST (A7-15) LG - G Steering pad switch signal Power switch ON (IG) Steering pad switch: OFF Above 4.6 V SGST (A7-15) - Body ground G - Body ground Ground for steering pad switch Always Below 1 V PSW (A7-6) - GND (A8-1) R - W-B Pressure switch signal Power switch ON (IG) Refrigerant pressure: Normal Below 1 V PSW (A7-6) - GND (A8-1) R - W-B Pressure switch signal Power switch ON (IG) Refrigerant pressure: More than 1,520 kPa (15.5 kgf/cm 2,220 psi) 10 to 14 V RH (A7-9) - GND (A8-1) R - W-B Humidity sensor signal Power switch ON (IG) Room humidity: 40% 2 V RH (A7-9) - GND (A8-1) R - W-B Humidity sensor signal Power switch ON (IG) Room humidity: 60% 2.5 V S5RM (A7-10) - GND (A8-1) G - W-B Power supply for humidity sensor Power switch ON (IG) 4.5 to 5.5 V PTC (A7-17) - GND (A8-1) P - W-B PTC heater signal Power switch ON (IG) Temperature switch: Max. HOT Coolant temperature: Below 55°C (131°F) Blower switch: OFF Below 1 V PTC (A7-17) - GND (A8-1) P - W-B PTC heater signal Power switch ON (IG) Temperature switch: Max. HOT Coolant temperature: Below 55°C (131°F) Blower switch: LO 10 to 14 V HT-1 (A7-26) - GND (A8-1) BR - W-B PTC heater signal Power switch ON (IG) Temperature switch: Max. HOT Coolant temperature: Below 55°C (131°F) Blower switch: OFF Below 1 V HT-1 (A7-26) - GND (A8-1) BR - W-B PTC heater signal Power switch ON (IG) Temperature switch: Max. HOT Coolant temperature: Below 55°C (131°F) Blower switch: LO 10 to 14 V HT-2 (A7-25) - GND (A8-1) L - W-B PTC heater signal Power switch ON (IG) Temperature switch: Max. HOT Coolant temperature: Below 55°C (131°F) Blower switch: OFF Below 1 V HT-2 (A7-25) - GND (A8-1) L - W-B PTC heater signal Power switch ON (IG) Temperature switch: Max. HOT Coolant temperature: Below 55°C (131°F) Blower switch: LO 10 to 14 V IDH (A8-18) - GND (A8-1) V - W-B DC/DC converter signal Power switch ON (IG) (Voltage normal) 10 to 14 V IDH (A8-18) - GND (A8-1) V - W-B DC/DC converter signal Power switch ON (IG) (Over voltage) Below 1 V Using an oscilloscope, measure the waveform 1. ITEM AND CONTENT REFERENCE Item Content Symbols (Terminal No.) BLW (A8-2) - GND (A8-1) Tool Setting 2 V/DIV., 500 msec./DIV. Condition Power switch ON (IG), Blower switch LO HINT: When the blower level is increased, the duty ratio changes accordingly.

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1. DESCRIPTION Air conditioning system data and the Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform troubleshooting.
2. CHECK DLC3 The vehicle's ECM uses the ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. DLC3 TERMINALS RESISTANCE SPECIFICATIONS Symbols (Terminal No.) Terminal Description Condition Specified Condition SIL (7) - SG (5) Bus "+" line During transmission Pulse generation CG (4) - Body ground Chassis ground Always Below 1ohms SG (5) - Body ground Signal ground Always Below 1ohms BAT (16) - Body ground Battery positive Always 11 to 14 V CANH (6) - CANL (14) HIGH-level CAN bus line Power switch OFF (1) 54 to 67 ohms CANH (6) - Battery positive HIGH-level CAN bus line Power switch OFF (1) 1 Mohms or higher CANH (6) - CG (4) HIGH-level CAN bus line Power switch OFF (1) 3 Mohms or higher CANL (14) - Battery positive LOW-level CAN bus line Power switch OFF (1) 1 Mohms or higher CANL (14) - CG (4) LOW-level CAN bus line Power switch OFF (1) 3 Mohms or higher (1) NOTICE: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the power switch, any other switches or the doors. If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector. HINT: Connect the cable of the Techstream to the DLC3, turn the power switch ON (IG) and attempt to use the tester. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the tester. If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle. If communication is still not possible when the tester is connected to another vehicle, the problem may be in the tester itself. Consult the Service Department listed in the tester's instruction manual.

DTC CHECK / CLEAR

1. CHECK DTC Connect the Techstream to the DLC3. Turn the power switch ON (IG) and turn the Techstream ON. Read the DTC by following the prompts on the tester screen. HINT: Refer to the Techstream operator's manual for further details.
2. CLEAR DTC Connect the Techstream to the DLC3. Turn the power switch ON (IG) and turn the Techstream ON. Clear the DTC by following the prompts on the tester screen. HINT: Refer to the Techstream operator's manual for further details.

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1. LIST OF OPERATION METHODS By operating each of the A/C control switches as shown in the diagram below, it is possible to enter the diagnostic check mode.
2. INDICATOR CHECK Turn the power switch OFF. While pressing both the AUTO and R/F (Recirculation/ Fresh) switches on the steering switch, turn the power switch from OFF to ON (READY). The indicator check is automatically performed when activating panel diagnosis. Check that all indicators and setting displays come on and go off 4 times at 1 second intervals. Check that the buzzer sounds when the indicators come on. HINT: The sensor check is automatically started when the indicator check is completed. Push the "TEMP DOWN (-)" switch to finish panel diagnosis.

DATA LIST / ACTIVE TEST

1. READ DATA LIST HINT: Using the Techstream's DATA LIST allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the DATA LIST early in troubleshooting is one way to save time. Connect the Techstream to the DLC3. Turn the power switch ON (IG) and turn the Techstream ON. Read the DATA LIST by following the prompts on the tester. Air conditioning amplifier DATA LIST Tester Display Measurement Item/Range Normal Condition Diagnostic Note Room Temperature Sensor Room temperature sensor / Actual room temperature is displayed Open in the circuit: -6.5°C (20.3°F) min.: -6.5°C (20.3°F) Short in the circuit: 57.25°C (135.05°F) max.: 57.25°C (135.05°F) Ambient Temp Sensor Ambient temperature sensor / Actual ambient temperature is displayed Open in the circuit: -23.3°C (-9.94°F) min.: -23.3°C (-9.94°F) Short: in the circuit: 65.95°C (150.71°F) max.: 65.95°C (150.71°F) Adjusted Ambient Temp Adjusted ambient temperature / - - min.: -30.8°C (-23.44°F) max.: 50.8°C (123.44°F) Evaporator Temp Sensor Evaporator temperature sensor / Actual evaporator temperature is displayed Open in the circuit: -29.7°C (-21.46°F) min.: -29.7°C (-21.46°F) Short in the circuit: 59.55°C (139.19°F) max.: 59.55°C (139.19°F) Solar Sensor (D side) Solar sensor (Driver side) / Increases as brightness increases Open in the circuit: 0 min.: 0 max.: 255 Short in the circuit: 255 Engine Coolant Temp Engine coolant temperature / Actual engine coolant temperature is displayed while the engine is warmed up - min.: 1.3°C (34.34°F) max.: 90.55°C (194.99°F) Set Temperature (D side) Set temperature (Driver side) / The same contents as a setting temperature display part are displayed - min.: 0 max.: 255 Air Mix Damper Position (D) Air mix damper position (Driver side) / min.: -14% max.: 113.5% Damper is at ""MAX. COOL"": - -10.00% Damper is at ""MAX. HOT"": 100.0% or 71.0% Air Outlet Damper Position Air outlet damper position / Damper is at ""FACE"": -10.0% Open in the circuit: 50.0% min.: -14% max.: 113.5% Damper is at ""FACE/FOOT"": 12.0% Damper is at ""FOOT"" (Manual): 33.5% or 69.0% Damper is at ""FOOT"" (Auto): 49.0% or 69.0 % Damper is at ""FACE/DEF"": 69.0% or 95.0% Damper is at ""DEF"": 110.0% Air Inlet Damper Position Air inlet damper position / Damper is at ""RECIRCULATION"": -1.0% Open in the circuit: 50.0% min.: -14% max.: 113.5% Damper is at ""FRESH"": 110.0% Damper is at ""HALF-RECIRCULATION"": 20.0 to 102.0% Air Mix Damper Target (D) Air mix damper target position (Driver side) / Damper is at ""MAX. COOL"": -10.0% - min.: -14% max.: 113.5% Damper is at ""MAX. HOT"": 100.0% or 71.0% Air Inlet Damper Target Air inlet damper target position / Damper is at ""RECIRCULATION"": -1.0% Open in the circuit: 50.0% min.: -14% max.: 113.5% Damper is at ""FRESH"": 110.0% Damper is at ""HALF-RECIRCULATION"": 20.0 to 102.0% Air Outlet Damper Target Air outlet damper target position / Damper is at ""FACE"": -10.0% Open in the circuit: 50.0% min.: -14% max.: 113.5% Damper is at ""FACE/FOOT"": 12.0% Damper is at ""FOOT"" (Manual): 33.5% or 69.0% Damper is at ""FOOT"" (Auto): 49.0% or 69.0 % Damper is at ""FACE/DEF"": 69.0% or 95.0% Damper is at ""DEF"": 110.0% Hand Free Telephone Handsfree telephone / OFF, ON - - Blower Motor Speed Level Blower motor speed level / Increases in the range between 0 and 31 as the speed increases - min.: Level 0 max.: 31 Humidity Sensor Humidity sensor / Actual room humidity is displayed - min.: 0% max.: 100% Compressor Speed Compressor speed / Displays actual rotation speed in the range between 0 rpm and 7,500 rpm - min.: 0 rpm max.: 65,535 rpm Compressor Target Speed Compressor target speed / Displays target rotation speed in the range between 0 rpm and 7,500 rpm - min.: 0 rpm max.: 65,535 rpm Number of Trouble Code Number of trouble codes / Number of DTCs will be displayed - min.: 0 max.: 255 Shift Set Temperature Shift set temperature / +2C, +1C, Customized value will be displayed - NORMAL, -1C, -2C Air Inlet Mode Air inlet mode / AUTO, MANUAL Customized value will be displayed - Compressor Mode Compressor mode / AUTO, MANUAL Customized value will be displayed - Compressor/DEF Mode Compressor/DEF operation mode / LINK, NORMAL Customized value will be displayed - Foot/DEF Auto Mode Foot/DEF auto mode / ON, OFF Customized value will be displayed - Foot/DEF Auto Blow Up Foot/DEF automatic blower up function / ON, OFF Customized value will be displayed - Foot Air Leak Foot air leak / ON, OFF Customized value will be displayed - Ambient Temperature Shift Ambient temperature shift / +3C, +2C, +1C, NORMAL, -1C, 2C, 3C Customized value will be displayed
2. PERFORM ACTIVE TEST HINT: Performing the Techstream's ACTIVE TEST allows relays, the VSV, actuators and other items to be operated without removing any parts. Performing the ACTIVE TEST early in troubleshooting is one way to save time. The DATA LIST can be displayed in the ACTIVE TEST. It is possible to display the DATA LIST on the Techstream during the ACTIVE TEST. Connect the Techstream to the DLC3. Turn the power switch ON (IG) and turn the Techstream ON. Perform the ACTIVE TEST by following the prompts on the tester. Air conditioning amplifier ACTIVE TEST DETAIL Tester Display Test Part Control Range Diagnostic Note BLOWER MOTOR Blower motor min.: 0 max.: 31 - AIR MIX DAMPER (D SIDE) Air mix damper (Driver side) min.: -14% max.: 113.5% - AIR OUTLET DAMPER POSITION (D SIDE) Air outlet damper position (Driver side) min.: -14% max.: 113.5% AIR INLET DAMPER POSITION (LINEAR) Air inlet damper position (linear) min.: -14% max.: 113.5% - COMPRS TARG SPD Compressor target speed min.: 0 max.: 255 - DEFOGGER RLY (REAR) Defogger relay (Rear) OFF, ON - WATER PUMP Water pump OFF, ON - ELECTRICAL FAN Electrical fan OFF, ON

DIAGNOSTIC TROUBLE CODE CHART

HINT

When the air conditioning system function properly, DTC B1400/00 is output.

Air conditioning system

DIAGNOSTIC TROUBLE CODE CHART

HINT

1. *1: If the room temperature is approx. -18.6°C (-3.7 °F) or lower, DTC B1411/11 may be output even though the system is normal.
2. *2: If the ambient temperature is approx. -52.9°C (-61.4°F) or lower, a malfunction code may be output even though the system is normal.
3. *3: If the check is performed in a dark place, DTC B1421/ 21 or B1424/24 (solar sensor circuit abnormal) could be displayed.
4. *4: The air conditioning amplifier memorizes the DTC of the respective malfunction that has occurred for a period of the time indicated in the brackets.

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1. ACTUATOR CHECK Start the engine to warm it up. Perform the indicator check. Push the R/F (Recirculation/Fresh) switch to perform the actuator check when the sensor check is started after the indicator check. HINT: Be sure to perform the actuator check with the power switch ON (READY). As the actuator check (continuous) is repeated from steps 0 to 9 at 1 second intervals, check the temperature and airflow visually and by hand. If the steps are difficult to read because they change automatically, push the "Fr. DEF" switch to display the steps step by step so that they can be read easily. The items are displayed step by step each time the "Fr. DEF" switch is pushed. HINT: The display blinks at 1 second intervals in the step operation. The illustration indicates that code 4 is output. Push the "TEMP-" switch to finish panel diagnosis. Push the "AUTO" switch to enter the sensor check mode. BLOWER LEVEL, AIR FLOW VENT, AIR INLET DAMPER AND AIR MIX DAMPER CONDITION CHART Step No. Display code Conditions Blower level Air flow vent Air inlet damper Air mix damper A/C compressor revolution speed (rpm) 1 0 0 FACE (-10.0%) FRESH (110.0%) "COOL" position (-10.0%) 0 2 1 1 FACE (-10.0%) FRESH (110.0%) "COOL" position (-10.0%) 0 3 2 17 FACE (-10.0%) FRESH (110.0%) "COOL" position (-10.0%) 7,500 4 3 17 FACE (-10.0%) RECIRCULATION (-1.0%) "COOL" position (-10.0%) 7,500 5 4 17 B/L (12%) RECIRCULATION (-1.0%) "COOL" / "HOT" (50.0% opened) 4,500 6 5 17 FOOT (49%) RECIRCULATION (-1.0%) "COOL" / "HOT" (65.0% opened) 4,500 7 6 17 FOOT (49%) RECIRCULATION (-1.0%) "HOT" position (100.0%) 4,500 8 7 17 F/D (69%) RECIRCULATION (-1.0%) "COOL" / "HOT" (65.0% opened) 4,500 9 8 17 F/D (95%) RECIRCULATION (-1.0%) "COOL" / "HOT" (90.0% opened) 4,500 10 9 31 DEF (110.0%) RECIRCULATION (-1.0%) "COOL" / "HOT" (50.0% opened) 4,500

INSPECTION PROCEDURE

1. CHECK DIAGNOSTIC TROUBLE CODE Check if DTCs for the hybrid control system are output using Techstream. OK : DTCs are not output in the hybrid control system. NG : GO TO HYBRID CONTROL SYSTEM OK : REPLACE A/C INVERTER

1. CHECK COOLING WATER NOTE: Even if DTCs are output only for the air conditioning system, inspect the cooling system first and check that it is normal as there may be trouble such as insufficient cooling water. NG : ADD COOLING WATER OK : GO TO NEXT STEP
2. CHECK DIAGNOSTIC TROUBLE CODE Check if DTCs for the hybrid control system are output using Techstream. OK : DTCs are not output in the hybrid control system. NG : GO TO HYBRID CONTROL SYSTEM OK : REPLACE A/C INVERTER

1. CHECK DIAGNOSTIC TROUBLE CODE Check if DTCs for the hybrid control system are output using Techstream. OK : DTCs are not output in the hybrid control system. NG : GO TO HYBRID CONTROL SYSTEM OK : REPLACE A/C INVERTER

ON-VEHICLE INSPECTION

1. INSPECT COOLER CONDENSER CORE If the fins of the condenser (with receiver) are dirty, clean them with water and dry them with compressed air. NOTE: Do not damage the fins of the cooler condenser core. If the fins of the condenser (with receiver) are bent, straighten them using a screwdriver or pliers.
2. INSPECT LEAKAGE OF REFRIGERANT Using a halogen leak detector, check the pipe joints for gas leakage. Check the tightening torque of the joint if gas leakage is detected in a pipe joint.

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1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM (See «REPLACEMENT»(ref-289870-S06283493382008070800000) )
2. REMOVE FRONT FENDER LINER LH (See «REMOVAL»(ref-289868-S12616289902008070800000) )
3. REMOVE FRONT FENDER LINER RH (See «REMOVAL»(ref-289868-S12616289902008070800000) )
4. REMOVE FRONT BUMPER COVER Remove the front bumper cover (See «REMOVAL»(ref-289868-S12616289902008070800000) ).
5. REMOVE NO. 1 INVERTER BRACKET
6. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY Remove the bolt and disconnect the discharge hose from the condenser (with receiver). Remove the O-ring from the discharge hose. NOTE: Seal the openings of the disconnected parts of the discharge hose and the condenser using vinyl tape to prevent moisture and foreign matter from entering them.
7. DISCONNECT COOLER REFRIGERANT LIQUID PIPE E (TO COOLER UNIT) Remove the bolt and disconnect the cooler unit refrigerant liquid pipe E from the condenser (with receiver). Remove the O-ring from the cooler refrigerant liquid pipe E. NOTE: Seal the openings of the disconnected parts of the cooler unit refrigerant liquid pipe E and the condenser using vinyl tape to prevent moisture and foreign matter from entering them.
8. REMOVE RADIATOR SUPPORT SUB-ASSEMBLY UPPER RH Remove the 4 bolts and radiator support upper.
9. REMOVE RADIATOR SUPPORT SUB-ASSEMBLY UPPER LH Remove the 4 bolts and radiator support upper.
10. REMOVE CONDENSER ASSEMBLY WITH RECEIVER Remove the 2 angles. Remove the 2 bolts and condenser (with receiver).

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1. REMOVE COOLER DRYER Using a 14 mm hexagon wrench, remove the cap from the modulator. Remove the O-ring from the cap. Using pliers, remove the cooler dryer.

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1. INSTALL COOLER DRYER Using pliers, install the cooler dryer to the modulator. Install a new O-ring to the cap. Sufficiently apply compressor oil (ND-OIL 11) to the O-ring and cap fitting surface. Compressor oil: ND-OIL 11 or equivalent NOTE: Do not use any compressor oil other than ND-OIL 11. If any compressor oil other than ND-OIL 11 is used, compressor motor insulation performance may decrease, resulting in a leakage of electric power. Using a 14 mm hexagon wrench, install the cap to the modulator. Torque: 2.9 N*m (30 kgf*cm, 25 in.*lbf)

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1. INSTALL CONDENSER ASSEMBLY WITH RECEIVER Install the condenser (with receiver) with the 2 bolts. Torque: 3.9 N*m (40 kgf*cm, 35 in.*lbf) Install the 2 angles to the condenser (with receiver).
2. INSTALL RADIATOR SUPPORT SUB-ASSEMBLY UPPER RH Install the radiator support upper with the 4 bolts. Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf) for bolt A 3.9 N*m (40 kgf*cm, 35 in.*lbf) for bolt B 7.5 N*m (76 kgf*cm, 66 in.*lbf) for bolt C
3. INSTALL RADIATOR SUPPORT SUB-ASSEMBLY UPPER LH Install the radiator support upper with the 4 bolts. Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf) for bolt A 3.9 N*m (40 kgf*cm, 35 in.*lbf) for bolt B 7.5 N*m (76 kgf*cm, 66 in.*lbf) for bolt C
4. CONNECT COOLER REFRIGERANT LIQUID PIPE E (TO COOLER UNIT) Remove the attached vinyl tape from the disconnected parts of the cooler refrigerant liquid pipe E and condenser assembly (with receiver). Install a new O-ring to the cooler refrigerant liquid pipe E. Sufficiently apply compressor oil (ND-OIL 11) to the O-ring and the cooler refrigerant liquid pipe E fitting surface. Compressor oil: ND-OIL 11 or equivalent NOTE: Do not use any compressor oil other than ND-OIL 11. If any compressor oil other than ND-OIL 11 is used, compressor motor insulation performance may decrease, resulting in a leakage of electric power. Connect the cooler refrigerant liquid pipe E to the condenser (with receiver) with the bolt. Torque: 5.4 N*m (55 kgf*cm, 47 in.*lbf)
5. CONNECT DISCHARGE HOSE SUB-ASSEMBLY Remove the attached vinyl tape from the disconnected parts of the discharge hose and the condenser (with receiver). Install a new O-ring to the discharge hose. Sufficiently apply compressor oil (ND-OIL 11) to the O-ring and the discharge hose fitting surface. NOTE: Do not use any compressor oil other than ND-OIL 11. If any compressor oil other than ND-OIL 11 is used, compressor motor insulation performance may decrease, resulting in a leakage of electric power. Connect the discharge hose to the condenser (with receiver) with the bolt. Torque: 5.4 N*m (55 kgf*cm, 47 in.*lbf)
6. INSTALL NO. 1 INVERTER BRACKET
7. INSTALL FRONT BUMPER COVER Install the front bumper cover (See «INSTALLATION»(ref-289868-S27287583852008070800000) ).
8. INSTALL FRONT FENDER LINER RH (See «INSTALLATION»(ref-289868-S27287583852008070800000) )
9. INSTALL FRONT FENDER LINER LH (See «INSTALLATION»(ref-289868-S27287583852008070800000) )
10. CHARGE REFRIGERANT (See «REPLACEMENT»(ref-289870-S06283493382008070800000) )
11. WARM UP COMPRESSOR (See «REPLACEMENT»(ref-289870-S06283493382008070800000) )
12. INSPECT LEAKAGE OF REFRIGERANT (See «REPLACEMENT»(ref-289870-S06283493382008070800000) )

Scheme 231

Scheme 232

Scheme 233

Scheme 234

1. DISCONNECT HEATER WATER HOSE C Detach the clamp and disconnect the wire harness. Slide the hose clip and then disconnect the heater water hose C. NOTE: Do not apply excessive force to the heater water hose C. Prepare a drain pan or cloth for when the cooling water leaks. REMOVE HEATER WATER PUMP ASSEMBLY Disconnect the connector. Remove the 2 bolts and then disconnect the heater water pump. Slide the hose clip and then disconnect the heater water hose A. Remove the heater water pump. NOTE: Do not apply excessive force to the heater water hose A. Prepare a drain pan or cloth for when the cooling water leaks.

Scheme 235

Scheme 236

Scheme 237

Scheme 238

1. INSTALL HEATER WATER PUMP ASSEMBLY Install the heater water hose A with the hose clip. NOTE: Ensure that the hose groove faces upwards. Install the hose clip in the direction shown in the illustration. Install the heater water pump with the 2 bolts. NOTE: Tighten them in the order indicated in the illustration. Connect the connector.
2. INSTALL HEATER WATER HOSE C Install the heater water hose C with the hose clip. NOTE: Install the hose marking facing upwards. Install the hose clip in the direction shown in the illustration. Connect the wire harness and attach the clamp.
3. ADD ENGINE COOLANT (See «ON-VEHICLE INSPECTION»(ref-289901-S10570958782008070800000) )
4. CHECK FOR ENGINE COOLANT LEAKS (See «ON-VEHICLE INSPECTION»(ref-289901-S10570958782008070800000) )

Scheme 239

1. REMOVE INSTRUMENT PANEL FINISH PANEL LOWER CENTER (See «REMOVAL»(ref-289871-S24621283232008070800000) )
2. REMOVE NO. 3 AIR DUCT REAR
3. REMOVE AIR CONDITIONING AMPLIFIER ASSEMBLY Disconnect the connector. Remove the 2 screws and air conditioning amplifier.

Scheme 240

1. INSTALL AIR CONDITIONING AMPLIFIER ASSEMBLY Install the air conditioning amplifier with the 2 screws. Connect the connector.
2. INSTALL NO. 3 AIR DUCT REAR
3. INSTALL INSTRUMENT PANEL FINISH PANEL LOWER CENTER (See «INSTALLATION»(ref-289871-S30577160482008070800000) )