Air Conditioning System (Automatic) (Diagnostics - Introduction): Diagnosis Toyota Highlander II рестайлинг

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use the following procedure to troubleshoot the air conditioning system.
2. *: Use Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK NEXT: Go to next step
3. INSPECT BATTERY VOLTAGE Standard voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding. NEXT: Go to next step
4. CHECK CAN COMMUNICATION SYSTEM* Use Techstream to check if the CAN communication system is functioning. Result Result Proceed to CAN DTC is not output A CAN DTC is output B Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-422513-S27444512412011092600000) B --> GO TO CAN COMMUNICATION SYSTEM A: Go to next step
5. CHECK FOR DTC Check for DTCs. Write down the DTCs. Clear the DTCs. Check whether the DTCs recur. Reproduce the problem symptoms in accordance with the DTCs that were written down, and check whether the DTCs recur. HINT: Refer to the DTC chart when any DTCs are output. Result Result Proceed to DTC is not output A DTC is output B B --> Go to step 8 A: Go to next step
6. REFER TO PROBLEM SYMPTOMS TABLE Result Result Proceed to Fault not listed in problem symptoms table A Fault listed in problem symptoms table B B --> Go to step 8 A: Go to next step
7. OVERALL ANALYSIS AND TROUBLESHOOTING* DATA LIST / ACTIVE TEST, refer to «DATA LIST / ACTIVE TEST»(ref-422458-S28466101712011092600000) Panel diagnosis (indicator check), refer to «CHECK MODE PROCEDURE»(ref-422458-S38964428812011092600000) Panel diagnosis (sensor check), refer to «CHECK MODE PROCEDURE»(ref-422458-S38964428812011092600000) Panel diagnosis (actuator check), refer to «CHECK MODE PROCEDURE»(ref-422458-S38964428812011092600000) Terminals of ECU, refer to «TERMINALS OF ECU»(ref-422458-S23847109542011092600000) NEXT: Go to next step
8. ADJUST, REPAIR OR REPLACE NEXT: Go to next step
9. 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 if necessary.
2. Inspect the fuses and relays related to this system before inspecting the suspected areas below.

AIR CONDITIONING SYSTEM (FOR FRONT)

AIR CONDITIONING SYSTEM (FOR REAR)

Scheme 37

Scheme 38

Scheme 39

Scheme 40

Scheme 41

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Scheme 44

1. CHECK AIR CONDITIONING AMPLIFIER Measure the voltage of the connectors. HINT: Check from the rear of the connector while it is connected to the air conditioning amplifier. Tester Connection Wiring Color Terminal Description Condition Specified Condition D37-1 (IG+) - D37-14 (GND) GR - W-B Power source (IG) Ignition switch on (IG) 11 to 14 V D37-2 (SOL+) - D37-14 (GND) L - W-B Air conditioning compressor operation signal Engine idling Pulse generation (Scheme 37) Blower switch LO Air Conditioning switch ON D37-3 (PTC1) - Body ground (*1) P - Body ground PTC NO. 1 heater relay operation signal Engine idling Below 1 V --> 11 to 14 V Set temperature: MAX HOT Engine coolant temperature: Below 65°C (149°F) Ambient temperature: Below 10°C (50°F) Blower switch OFF --> LO D37-4 (PTC3) - Body ground (*1) W - Body ground PTC NO. 3 heater relay operation signal Engine idling Below 1 V --> 11 to 14 V Set temperature: MAX HOT Engine coolant temperature: Below 65°C (149°F) Ambient temperature: Below 10°C (50°F) Blower switch OFF --> LO D37-5 (TAM) - D37-14 (GND) GR - W-B Ambient temperature sensor signal Ignition switch on (IG) 1.8 to 2.2 V Ambient temperature: 25°C (77°F) D37-7 (FLOQ) - D37-13 (SG-2) (*3) G - SB A/C flow sensor signal Ignition switch on (IG) 0.3 to 4.7 V D37-7 (FLOQ) - D37-13 (SG-2) (*3) G - SB A/C flow sensor signal Ignition switch off Below 1 V D37-8 (LOCK) - D37-14 (GND) (*3) V - W-B Air compressor lock sensor signal Engine idling Pulse generation (Scheme 41) Air Conditioning switch ON Blower switch LO D37-9 (PRE) - D37-13 (SG-2) R - SB (*3) B- SB (*4) Air conditioning pressure sensor signal Refrigerant pressure: Normal 0.76 to 4.74 V D37-9 (PRE) - D37-13 (SG-2) R - SB (*3) B- SB (*4) Air conditioning pressure sensor signal Refrigerant pressure: Abnormal (less than 0.196 MPa [2.0 kgf/cm 2, 28 psi]) 0.5 to 4.83 V D37-9 (PRE) - D37-13 (SG-2) R - SB (*3) B- SB (*4) Air conditioning pressure sensor signal Refrigerant pressure: Abnormal (more than 3.03 MPa [32 kgf/cm 2, 455 psi]) 4.74 V or higher D37-10 (S5-3) - D37-14 (GND) BE - W-B Power supply for pressure sensor Ignition switch on (IG) 4.5 to 5.5 V D37-11 (CANH) - D37-14 (GND) LG - W-B Hi-level CAN bus line Ignition switch on (IG) Pulse generation (Scheme 39) D37-12 (CANL) - D37-14 (GND) W - W-B Lo-level CAN bus line Ignition switch on (IG) Pulse generation (Scheme 40) D37-13 (SG-2) - Body ground SB - Body ground Ground for pressure sensor, A/C flow sensor, ambient temperature sensor Always Below 1 V D37-14 (GND) - Body ground W-B - Body ground Ground for main power supply Always Below 1 V D37-20 (MGC) - D37-14 (GND) (*3) V - W-B Air conditioning compressor magnetic clutch operation signal Engine idling Below 1 V Blower switch LO Air Conditioning switch ON D37-21 (B) - D37-14 (GND) LG - W-B Power source (Back-up) Always 11 to 14 V D37-22 (PTC2) - Body ground (*1) G - Body ground PTC NO. 2 heater relay operation signal Engine idling Below 1 V --> 11 to 14 V Set temperature: MAX HOT Engine coolant temperature: Below 65°C (149°F) Ambient temperature: Below 10°C (50°F) Blower switch OFF --> LO D37-23 (BLW) - D37-14 (GND) R - W-B Blower motor control signal Ignition switch on (IG) Pulse generation (Scheme 38) Blower switch LO D37-25 (ALT) - Body ground (*1) SB - Body ground Generator signal Engine idling Pulse generation D37-29 (TR) - D37-35 (SG-4) V - LG Room temperature sensor signal (for Front) Ignition switch on (IG) 1.8 to 2.2 V Vehicle interior temperature: 25°C (77°F) D37-30 (S5-1) - D37-13 (SG-2) (*3) Y - SB Power supply for A/C flow sensor Ignition switch on (IG) 4.5 to 5.5 V D37-30 (S5-1) - D37-13 (SG-2) (*3) Y - SB Power supply for A/C flow sensor Ignition switch off Below 1 V D37-32 (TSP) - D37-14 (GND) GR - W-B Front passenger side solar sensor signal Ignition switch on (IG) 0.8 to 4.3 V Solar sensor subject to electric light D37-33 (TSD) - D37-14 (GND) L - W-B Driver side solar sensor signal Ignition switch on (IG) 0.8 to 4.3 V Solar sensor subject to electric light D37-35 (SG-4) - Body ground LG - Body ground Ground for room temperature sensor (for Front) Always Below 1 V D37-37 (LIN1) - D37-14 (GND) R - W-B LIN communication signal Ignition switch on (IG) Pulse generation D37-38 (RDEF) - D37-14 (GND) W - W-B Rear defogger switch signal Ignition switch on (IG) Rear defogger switch OFF 11 to 14 V D37-38 (RDEF) - D37-14 (GND) W - W-B Rear defogger switch signal Ignition switch on (IG) Rear defogger switch ON Below 1 V D38-1 (RBUS) - D38-21 (RBUG) (*2) R - V BUS IC control signal (for Rear) Ignition switch on (IG) Pulse generation D38-4 (TEC) - D38-19 (SGND) (*2) B - GR Evaporator temperature sensor signal (for Rear) Ignition switch on (IG) 1.4 to 1.8 V Evaporator temperature: 15°C (59°F) D38-7 (SG-6) - Body ground (*2) W - Body ground Ground for room temperature sensor signal (for Rear) Always Below 1 V D38-13 (RLIN) - D38-20 (GND2) (*2) B - W-B LIN communication signal (for Rear) Ignition switch on (IG) Pulse generation D38-17 (TR) - D38-7 (SG-6) (*2) G - W Room temperature sensor signal (for Rear) Ignition switch on (IG) 1.8 to 2.2 V Vehicle interior temperature: 25°C (77°F) D38-19 (SGND) - Body ground (*2) GR - Body ground Ground for evaporator temperature sensor signal (for Rear) Always Below 1 V D38-20 (GND2) - Body ground (*2) W-B - Body ground Ground for power supply Always Below 1 V D38-21 (RBUG) - Body ground (*2) V - Body ground Ground for BUS IC (for Rear) Always Below 1 V D38-22 (BLWH) - D38-20 (GND2) (*2) G - W-B Blower motor control signal (for Rear) Ignition switch on (IG) Pulse generation Blower switch LO D38-23 (RBBU) - D38-21 (RBUG) (*2) Y - V Power supply for BUS IC (for Rear) Ignition switch on (IG) 11 to 14 V D38-24 (+B2) - D38-20 (GND2) (*2) LG - W-B Power source (Back-up) (for Rear) Always 11 to 14 V z17-2 (BUS G) - Body ground - Ground for BUS IC Always Below 1 V z17-3 (BUS) - z17-2 (BUS G) - BUS IC control signal Ignition switch on (IG) Pulse generation z17-4 (B BUS) - z17-2 (BUS G) - Power supply for BUS IC Ignition switch on (IG) 11 to 14 V z17-5 (SGA) - Body ground - Ground for evaporator temperature sensor Always Below 1 V z17-6 (TEA) - z17-5 (SGA) - Evaporator temperature sensor signal (for Front) Ignition switch on (IG) 1.4 to 1.8 V Evaporator temperature: 15°C (59°F) HINT: *1: w/ PTC Heater *2: for Rear Air Conditioning *3: 2GR-FE *4: 1AR-FE Using an oscilloscope, check waveform 1. COMPRESSOR OPERATION SIGNAL Item Content Tester Connection D37-2 (SOL+) - D37-14 (GND) Tool Setting 5 V/DIV., 500 μsec./DIV. Condition Engine idling, Blower switch LO, air conditioning switch ON Using an oscilloscope, check waveform 2. BLOWER MOTOR CONTROL SIGNAL Item Content Tester Connection D37-23 (BLW) - D37-14 (GND) Tool Setting 1 V/DIV., 500 μsec./DIV. Condition Ignition switch on (IG), Blower switch LO HINT: When the blower level is increased, the duty ratio changes accordingly. Using an oscilloscope, check waveform 3. CAN COMMUNICATION SIGNAL Item Content Tester Connection D37-11 (CANH) - D37-14 (GND) Tool Setting 1 V/DIV., 10 μsec./DIV. Condition Ignition switch on (IG) HINT: The waveform varies depending on the CAN communication signal. Using an oscilloscope, check waveform 4. CAN COMMUNICATION SIGNAL Item Content Tester Connection D37-12 (CANL) - D37-14 (GND) Tool Setting 1 V/DIV., 10 μsec./DIV. Condition Ignition switch on (IG) HINT: The waveform varies depending on the CAN communication signal. Using an oscilloscope, check waveform 5. AIR CONDITIONING COMPRESSOR LOCK SENSOR SIGNAL Item Content Tester Connection D37-8 (LOCK) - D37-14 (GND) Tool Setting 200 mV/DIV., 10 ms./DIV. Condition Engine is running Blower switch: LO Air conditioning switch: ON HINT: The waveform varies depending on the engine speed.
2. CHECK FRONT AIR CONDITIONING CONTROL Measure the voltage of the connectors. Tester Connection Wiring Color Terminal Description Condition Specified Condition E10-2 (IG+) - E10-10 (GND) V - W-B Power source (IG) Ignition switch on (IG) 11 to 14 V E10-5 (LIN1) - E10-10 (GND) R - W-B LIN communication signal Ignition switch on (IG) Pulse generation E10-10 (GND) - Body ground W-B - Body ground Ground for front air conditioning control Always Below 1 V
3. CHECK REAR AIR CONDITIONING CONTROL (for Rear Air Conditioning) Measure the voltage of the connectors. Tester Connection Wiring Color Terminal Description Condition Specified Condition R1-2 (IG+) - R1-10 (E) V - W-B Power source (IG) Ignition switch on (IG) 11 to 14 V R1-5 (MPX-) - R1-10 (E) B - W-B LIN communication signal Ignition switch on (IG) Pulse generation R1-10 (E) - Body ground W-B - Body ground Ground for rear air conditioning control Always Below 1 V

DIAGNOSIS SYSTEM

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 Techstream to check for malfunctions and perform troubleshooting.
2. CHECK DLC3 Check the DLC3, refer to «GENERAL INFORMATION»(ref-422289-S32263999802011092600000) .

DTC CHECK / CLEAR

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

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Scheme 50

1. LIST OF OPERATION METHODS By operating each of the air conditioning control switches as shown in the diagram below, it is possible to enter the diagnostic check mode.
2. INDICATOR CHECK Turn the ignition switch off. Turn the ignition switch on (IG) while pressing the air conditioning control assembly "AUTO" switch and "R/F" switch simultaneously. Hold both switches until the indicator check screen appears. The indicator check is automatically performed when panel diagnosis is activated. Check that the indicators light up and go off at 1 second intervals 4 times in succession. HINT: The sensor check automatically starts when the indicator check is completed. Press the "OFF" switch to cancel the check mode. If a navigation system is installed, the indicator will blink and the buzzer will sound.
3. DTC CHECK (SENSOR CHECK) Start the engine and warm it up. Perform the indicator check. HINT: After the indicator check is completed, the system enters the DTC check mode automatically. Read the code displayed on the panel. NOTE: In the sensor check mode, which is automatically transferred from the indicator check mode, troubleshooting may be partially performed. Be sure to perform the actuator check, and then the sensor check again. If the check is performed in a dark place, DTC 21 or 24 may be displayed even though the system is normal. HINT: Refer to the DTC chart (Diagnostic Trouble Code chart) for details of the codes, refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-422458-S19050313992011092600000) . When there are no problems, DTC 00 is output. As an example, the illustration shows that display code 21 is output. Illustrations may differ from the actual screen displayed depending on the specifications of the vehicle and customized settings. If the steps are difficult to read because they change automatically, push the "DEF" switch to display the steps one at a time so that they can be read easily. The items are displayed step by step each time the "DEF" switch is pushed. Push the "OFF" switch to finish panel diagnosis. Push the "R/F" switch to enter the actuator check mode.
4. CLEAR SENSOR CHECK CODE HINT: Illustrations may differ from the actual screen displayed depending on the specifications of the vehicle and customized settings. Inspect and repair or replace the malfunctioning parts. Clear the sensor check codes. While pressing the Fr DEF switch during sensor check mode, press the Rr DEF switch. HINT: Sensor check codes can be cleared by removing the ECU-B fuse from the engine room No. 1 relay block for more than 60 seconds. Perform the sensor check and confirm that normal code 00 is displayed.
5. ACTUATOR CHECK Start the engine and warm it up. Perform the indicator check. Push the "R/F" switch to perform the actuator check. HINT: Be sure to perform the actuator check after starting the engine. As the actuator check is repeated from steps 0 to 9 at 1 second intervals, check the temperature and air flow visually and by hand. HINT: The display blinks at 1 second intervals in the step operation. Push the "OFF" switch to finish panel diagnosis. Push the "AUTO" switch to enter the sensor check mode. Illustrations may differ from the actual screen displayed depending on the specifications of the vehicle and customized settings. Step No. (Front display) Blower Level Front Air Mix Damper Air Flow Vent Air Inlet Damper Cool Air By-pass Compressor Rear Air Mix Damper Rear Air Flow Vent Rear Blower Level 0 0 0% FACE FRESH - OFF 0% Rr FACE 0 1 1 0% FACE FRESH - OFF 0% Rr FACE 1 2 17 0% FACE RECIRCULATE / FRESH - ON 0% Rr FACE 17 3 17 0% FACE RECIRCULATE - ON 0% Rr FACE 17 4 17 50% B/L RECIRCULATE - ON 50% Rr B/L 17 5 17 50% B/L RECIRCULATE - ON 50% Rr B/L 17 6 17 50% FOOT FRESH - ON 50% RrFOOT 17 7 17 100% FOOT-0 FRESH - ON 100% Rr FOOT 17 8 17 100% F/D FRESH - ON 100% Rr FOOT 17 9 31 100% DEF FRESH - ON 100% Rr FOOT 31 If the steps are difficult to read because they change automatically, push the "DEF" switch to display the steps one at a time so that they can be read easily. The items are displayed step by step each time the "DEF" switch is pushed. HINT: Push the "OFF" switch to finish panel diagnosis. Push the "R/F" switch to enter the sensor check mode.

DATA LIST / ACTIVE TEST

1. READ DATA LIST HINT: Using Techstream to read the Data List allows the values or states of switches, sensors, actuators, and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. Connect Techstream to the DLC3. Turn the ignition switch on (IG) and turn Techstream on. Read the Data List by following the prompts on the tester. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Room Temperature sensor Room temperature sensor / Min.: -6.5°C (20.3°F) Max.: 57.25°C (135.05°F) Actual cabin temperature is displayed Open in circuit: -6.5°C (20.3°F) Short in circuit: 57.25°C (135.05°F) Ambient Temp Sensor Ambient temperature sensor / Min.: -23.3°C (-9.94°F) Max.: 65.95°C (150.71°F) Actual ambient temperature is displayed Open in circuit: -23.3°C (-9.94°F) Short in circuit: 65.95°C (150.71°F) Solar Sensor (D side) Driver side solar sensor / Min.: 0, Max.: 255 Driver side solar sensor value increases as brightness increases Open in circuit: 0 Short in circuit: 255 Solar Sensor (P Side) Passenger side solar sensor / Min.: 0, Max.: 255 Front passenger side solar sensor value increases as brightness increases Open in circuit: 0 Short in circuit: 255 Engine Coolant Temp Engine coolant temperature sensor / Min.: 1.3°C (34.34°F) Max.: 90.55°C (194.99°F) Actual engine coolant temperature is displayed - Set Temperature (D Side) Driver side set temperature / Min.: 0°C (32°F) Max.: 30°C (86°F) Driver side actual set temperature is displayed - Set Temperature (P Side) Passenger side set temperature / Min.: 0°C (32°F) Max.: 30°C (86°F) Front passenger side actual set temperature is displayed - Blower motor speed Level Blower motor speed level / Min.: 0, Max.: 31 Increases in range between 0 and 31 as blower motor speed increases - Adjusted Ambient Temp Adjusted ambient Min.: -30.8°C (-23.44°F) Max.: 50.8°C (123.44°F) Adjusted ambient temperature is displayed - Air Mix Sensor Targ Pulse(D) Driver side air mix control servo motor target pulse / Min.: 0, Max.: 255 MAX. COLD: 5 (pulse) MAX. HOT: 103 (pulse) - Air Mix Sensor Targ Pulse(P) Passenger side air mix control servo motor target pulse / Min.: 0, Max.: 255 MAX. COLD: 105 (pulse) MAX. HOT: 7 (pulse) - Air Outlet Servo Pulse(D) Driver side air outlet control servo motor target / Min.: 0, Max.: 255 FACE: 8 (pulse) B/L: 30 (pulse) FOOT: 67 (pulse) FOOT/DEF: 80 (pulse) DEF: 97 (pulse) - Air Inlet Damper Targ Pulse Air inlet damper target pulse / Min.: 0, Max.: 255 RECIRCULATION: 7 (pulse) FRESH: 28 (pulse) - Evaporator Fin Temperature Evaporator temperature sensor / Min.: -29.7°C (-21.46°F) Max.: 59.55°C (139.19°F) Actual evaporator temperature is displayed Open in circuit: -29.7°C (-21.46°F) Short in circuit: 59.55°C (139.19°F) Regulator Pressure Sensor Regulator pressure sensor / Min.: -0.45668 MPaG (-4.66 kgf/cm 2 , -66.24 psi) Max.: 3.29437 MPaG (33.59 kgf/cm 2 , 477.85 psi) Actual regulator pressure is displayed - Regulator Control Current Regulator control current / Min.: 0 A Max.: 0.997 A Value changes between 0 A and 0.997 A in accordance with compressor operation - Room Temp Sensor(Rear) Rear room temperature sensor / Min.: -6.5°C (20.3°F) Max.: 57.25°C (135.05°F) Actual rear cabin temperature is displayed Open circuit: -6.5°C (20.3°F) Short circuit: 57.25°C (135.05°F) Ambient Temp Sensor(Rear) Rear evaporator temperature sensor / Min.: -29.7°C (-21.46°F) Max.: 59.55°C (139.19°F) Actual rear evaporator temperature is displayed - Set Temperature (Rear) Rear side set temperature / Min.: 0 Max.: 255 Rear side actual rear set temperature is displayed - Blower Motor Level(Rear) Rear blower motor speed level / Min.; 0, Max.: 31 Increases in range between 0 and 31 as rear blower motor speed increases - Air Outlet Servo Pulse(R) Rear side air outlet control servo motor target pulse / Min.: 0, Max.: 255 Rr FACE: 83 (pulse) Rr B/L: 38 (pulse) Rr FOOT: 7 (pulse) - Air Mix Servo Targ Pulse(R) Rear side air mix control servo motor target pulse / Min.: 0, Max.: 255 MAX. COLD: 9 (pulse) MAX. HOT: 54 (pulse) - A/C Cutoff Signal A/C control cutoff signal / OFF or ON A/C switch on: OFF A/C switch off: ON - Flow Sensor A/C flow sensor / Min.: 0 V, Max.: 5 V Ignition switch on (IG): 0.3 to 4.7 V A/C flow sensor is malfunctioning when a constant value below 0.3 V or higher than 4.7 V is displayed continuously for more than 4 seconds. #Codes Number of trouble codes / Min.: 0, Max.: 255 Number of DTCs displayed
2. PERFORM ACTIVE TEST HINT: Using Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests. Connect Techstream to the DLC3. Turn the ignition switch on (IG) and turn Techstream on. Perform the Active Test by following the prompts on the tester. AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Blower Motor Blower motor Min.: 0, Max.: 31 - Magnetic Clutch Relay Magnetic clutch relay OFF, ON - Defogger Relay(Rear) Defogger relay (Rear) OFF, ON - Mirror Heater Relay Mirror heater relay OFF, ON - Deicer Relay Deicer relay OFF, ON - Heater Active Level Heater active level Min.: 0, Max.: 3 - Air Mix Servo Targ Pulse(D) Air mix servo motor pulse (D side) Min.: 5, Max.: 103 - Air Mix Servo Targ Pulse(P) Air mix servo motor pulse (P side) Min.: 7, Max.: 105 - Air Outlet Servo Targ Pulse(D) Air outlet servo motor pulse (D side) Min.: 8, Max.: 97 - Air Inlet Damper Targ Pulse Air inlet damper target pulse Min.: 7, Max.: 28 - A/O Servo Pulse (RrD) Rear air outlet servo motor pulse Min.: 0, Max.: 255 - Rear Blower Motor Rear blower motor Min.: 0, Max.: 31 - Rear Air Mix Servo Targ Pulse Rear air mix control servo motor pulse Min.: 9, Max.: 54

DIAGNOSTIC TROUBLE CODE CHART

AIR CONDITIONING SYSTEM

1. *1: If the room temperature is approximately -18.6°C (- 1.48°F) or lower, DTC B1411/11 may be output even though the system is normal.
2. *2: If the ambient temperature is approximately -52.9°C (- 63.22°F) or lower, DTC B1412/12 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) may be output even though the system is normal.
4. *4: The A/C amplifier memorizes the DTC of the respective malfunction if it has occurred for the period of time indicated in the brackets.
5. *5: for Rear Air Conditioning System