MONITOR SCANTOOL DATA Hyundai Santa Fe II

MONITOR SCANTOOL DATA

1. Connect scantool to Data Link Connector (DLC).
2. Engine "ON"
3. Monitor the "Driver Air Mix Potentiometer" Parameter on the Scantool while operating temp, switch.
4. Are the DTC B1246 present and is parameter of "Driver Air Mix potentiometer" fixed? * Parameter of "Driver Air Mix potentiometer" will be fixed at 100%(or any value above 90%), or 0% (or any value below 10%), if there is any fault in Driver Air Mix potentiometer. YES Go to " «INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Fault is intermittent caused by poor contact in the sensor's and/or A/C controller's connector or was repaired and A/C controller memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Refer to DTC B1245 .

Scheme 170

1. Check for short in harness. Ignition "OFF" Disconnect Driver Air Mix potentiometer. Measure resistance between terminal "6" and "5" of Driver Air Mix potentiometer. Specification : Approx. infinity ohms Is the measured resistance within specifications? YES Go to " «GROUND CIRCUIT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Check for short to power harness in signal harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 171

1. Check for open in harness. Ignition "OFF" Disconnect Driver Air Mix Potentiometer. Measure resistance between terminal "7" of Driver Air Mix Potentiometer and chassis ground. Specification : Approx. 0 ohms Is the measured resistance within specifications? YES Go to " «COMPONENT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Check for open in ground harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Refer to DTC B1245 .

Refer to DTC B1245 .

Scheme 172

The mode control actuator mounted on heater unit, adjusts position of mode door by operating Direction Motor based on signal of A/C control unit. Pressing mode select switch makes the mode control actuator shift in order of vent --> B/L --> floor --> mix.

The A/C controller sets DTC B1249 if there is an open circuit or poor connection in the Direction potentiometer.

DTC DETECTING CONDITION CHART

Scheme 173

Scheme 174

1. Connect scantool to Data Link Connector (DLC).
2. Engine "ON"
3. Monitor the "DR. DIRECTION POTENTIO." parameter on the scantool while operating mode switch.
4. Are the DTC B1249 present and is parameter of "DR. DIRECTION POTENTIO." fixed? * Parameter of "DR. DIRECTION POTENTIO." will be fixed at 100%(or any value above 90%), or 0% (or any value below 10%), if there is any fault in Driver Direction potentiometer. YES Go to " «INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Fault is intermittent caused by poor contact in the sensor's and/or A/C controller's connector or was repaired and A/C controller memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

1. Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found? YES Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Go to " «SIGNAL CIRCUIT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 175

Scheme 176

1. Check for open in harness. Ignition "OFF" Disconnect Driver mode Actuator. Measure resistance between terminal "6" of Driver Direction potentiometer and terminal "21" of A/C control unit. Specification : Approx. 0 ohms Is the measured resistance within specifications? YES Go to " 2 Check for short to ground in harness" procedure. NO Check for open in signal harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.
2. Check for short to ground in harness. Ignition "OFF" Disconnect Driver mode Actuator. Measure resistance between terminal "6" of Driver Direction potentiometer and chassis ground. Specification : Approx. infinity ohms Is the measured resistance within specifications? YES Go to " «POWER CIRCUIT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Check for short to ground in signal harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 177

1. Check for short or open in harness. Ignition "ON" Connect Driver Direction potentiometer. Measure voltage between terminal "7" of Driver Direction potentiometer and chassis ground. Specification : Approx. 5V Is the measured voltage within specifications? YES Go to " «COMPONENT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Check for short or open in power harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 178

Scheme 179

Scheme 180

1. Check actuator. Ignition "OFF" Disconnect Driver Direction potentiometer. Verify that the mode actuator operates to the vent mode when connecting 12V to the terminal "3" and grounding terminal "4". Verify that the mode actuator operates to the def mode when the connections are reversed. Does the actuator work properly? YES Go to " 2 Check potentiometer" procedure. NO Substitute with a known-good actuator and check for proper operation. If the problem is corrected, replace actuator and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.
2. Check potentiometer Ignition "ON" Connect Driver Direction potentiometer. Measure voltage between terminal "5" and "6" of Driver Direction potentiometer as the mode switch is operated. Specification: Refer the specifications in (Scheme 3) VOLTAGE SPECIFICATION Door position Voltage (5-6) Error detecting VENT 0.3 ± 0.15V Under voltage: 0.08V or less Over voltage: 4.92V or more BI-LEVEL (1) 1.35 ± 0.4V BI-LEVEL (2) 2.25 ± 0.4V FLOOR 3.0 ± 0.4V MIX 3.6 ± 0.4V DEF 4.7 ± 0.15V Is the measured voltage within specifications in (Scheme 3)? YES Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Substitute with a known-good actuator and check for proper operation. If the problem is corrected, replace actuator and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

After a repair, it is essential to verify that the fault has been corrected.

1. Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode and then clear DTC.
2. Operate the vehicle and monitor the DTC on the scantool.
3. Are any DTCs present? YES Go to the «APPLICABLE TROUBLESHOOTING PROCEDURE»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) . NO System is performing to specification at this time.

The mode control actuator mounted on heater unit, adjusts position of mode door by operating Direction Motor based on signal of A/C control unit. Pressing mode select switch makes the mode control actuator shift in order of vent --> B/L --> floor --> mix.

The A/C controller sets DTC B1250 if there is a short to power in the Direction potentiometer.

DTC DETECTING CONDITION CHART

Refer to DTC B1249 .

Scheme 181

1. Connect scantool to Data Link Connector (DLC).
2. Engine "ON"
3. Monitor the "DR. DIRECTION POTENTIO." parameter on the scantool while operating mode switch.
4. Are the DTC B1250 present and is parameter of "DR. DIRECTION POTENTIO." fixed? * Parameter of "DR. DIRECTION POTENTIO." will be fixed at 100%(or any value above 90%), or 0% (or any value below 10%), if there is any fault in Driver Direction potentiometer. YES Go to " «INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Fault is intermittent caused by poor contact in the sensor's and/or A/C controller's connector or was repaired and A/C controller memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Refer to DTC B1249 .

Scheme 182

1. Check for short in harness. Ignition "OFF" Disconnect Driver mode Actuator. Measure resistance between terminal "6" and "7" of Driver Direction potentiometer. Specification : Approx. infinity ohms Is the measured resistance within specifications? YES Go to " «GROUND CIRCUIT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Check for open in signal harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 183

1. Check for open in ground harness. Ignition "OFF" Disconnect Driver mode Actuator. Measure resistance between terminal "5" of evaporator sensor and chassis ground. Specification :Approx. 0 ohms Is the measured resistance within specifications? YES Go to " «COMPONENT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Check for open in ground harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Refer to DTC B1249 .

Refer to DTC B1249 .

Scheme 184

AQS (Air Quality System) keeps air inside in the most suitable state for driver. In polluted area AQS detects hazardous gas and intercepts inflow automatically, Inversely, In fresh area it allows the inflow of air to prevent the shortage of air and the accumulation of carbon dioxide. AQS sensor is located at front side of condenser and once hazardous gas is detected, it delivers the voltage signal to A/C controller for closing intake door.

The A/C controller sets DTC B1257 if there is an open circuit in AQS sensor signal harness or the measured voltage value of sensor is more than threshold value.

DTC DETECTING CONDITION CHART

Refer to DTC B1258 .

Scheme 185

1. Connect scantool to Data Link Connector (DLC).
2. Engine "ON"
3. Monitor the "AQS sensor" Parameter on the Scantool. While making hazardous gas such as tobacco fumes around the AQS sensor.
4. Are the DTC B1257 present and is parameter of "AQS SENSOR" fixed? YES Go to " «INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Fault is intermittent caused by poor contact in the sensor's and/or A/C controller's connector or was repaired and A/C controller memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

1. Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found? YES Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Go to " «SIGNAL CIRCUIT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 186

1. Check for open in harness. Ignition "OFF" Disconnect AQS sensor. Measure resistance between terminal "1" of AQS sensor and terminal "2" of A/C Control Unit. Specification : Approx. 0 ohms Is the measured resistance within specifications? YES Go to " «GROUND CIRCUIT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Check for open in harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 187

1. Check for open in ground harness. Ignition "OFF" Disconnect AQS sensor. Measure resistance between terminal "2" of AQS sensor and chassis ground. Specification : Approx. 0 ohms Is the measured resistance within specifications? YES Go to " «COMPONENT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Check for open in ground harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 188

1. Check AQS sensor. Engine "ON" Connect AQS sensor. Measure voltage between terminal "1" and "2" of AQS sensor. Specification : Refer to the «SPECIFICATIONS»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) . VOLTAGE SPECIFICATION Operating condition Voltage Note Right after IGN "ON" 2.5V ± 0.3V preheating (35 ± 2sec) Normal 4.3V ± 0.3V Intake door: Fresh Gas detected 0.9V ± 0.3V Intake door: Recirculation Specifications : Voltage value of AQS sensor as a function of position of operating condition. Is the measured voltage within specifications? YES Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Substitute with AQS sensor and check for proper operation. If the problem is corrected, replace AQS sensor and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

After a repair, it is essential to verify that the fault has been corrected.

1. Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode and then clear DTC.
2. Operate the vehicle and monitor the DTC on the scantool.
3. Are any DTCs present? YES Go to the «APPLICABLE TROUBLESHOOTING PROCEDURE»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) . NO System is performing to specification at this time.

AQS (Air Quality System) keeps air inside in the most suitable state for driver. In polluted area AQS detects hazardous gas and intercepts inflow automatically, Inversely, In freshsh area it allows the inflow of air to prevent the shortage of air and the accumulation of carbon dioxide. AQS sensor is located at front side of condenser and once hazardous gas is detected, it delivers the voltage signal to A/C controller for closing intake door.

The A/C controller sets DTC B1258 if there is a short circuit in AQS sensor signal harness or the measured voltage value of the sensor is less than the threshold value.

DTC DETECTING CONDITION CHART

* Voltage value of AQS sensor as a function of position of operating condition.

VOLTAGE SPECIFICATION

Scheme 189

1. Connect scantool to Data Link Connector (DLC).
2. Engine "ON"
3. Monitor the "AQS sensor" Parameter on the Scantool. While making hazardous gas such as tobacco fumes around the AQS sensor.
4. Are the DTC B1258 present and is parameter of "AQS SENSOR" fixed? YES Go to " «INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Fault is intermittent caused by poor contact in the sensor's and/or A/C control unit's connector or was repaired and A/C control unit memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

1. Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found? YES Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Go to " «SIGNAL CIRCUIT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 190

1. Check for open in harness. Ignition "OFF" Disconnect AQS sensor. Measure resistance between terminal "1" of AQS sensor and terminal chassis ground. Specification : Approx. 0 ohms Is the measured resistance within specifications? YES Go to " «COMPONENT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Check for open in harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 191

1. Check AQS sensor. Engine "ON" Connect AQS sensor. Measure voltage between terminal "1" and "2" of AQS sensor. Specification : Refer the specifications. VOLTAGE SPECIFICATION Operating condition Voltage Note Right after IGN "ON" 2.5V ± 0.3V preheating (35 ± 2sec) Normal 4.3V ± 0.3V Intake door : Fresh Gas detected 0.9V ± 0.3V Intake door: Recirculation Specifications : Voltage value of AQS sensor as a function of position of operating condition. Is the measured voltage within specifications? YES Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Substitute with a AQS sensor and check for proper operation. If the problem is corrected, replace AQS sensor and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.
2. Check A/C Control Unit Engine : "ON" Disconnect AQS sensor. Measure voltage between terminal "2" of A/C Control Unit and chassis ground. Specification :Approx. 5V Is the measured voltage within specifications? YES Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Substitute with a known-good A/C Control Unit and check for proper operation. If the problem is corrected, replace A/C Control Unit and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

After a repair, it is essential to verify that the fault has been corrected.

1. Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode and then clear DTC.
2. Operate the vehicle and monitor the DTC on the scantool.
3. Are any DTCs present? YES Go to the «APPLICABLE TROUBLESHOOTING PROCEDURE»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) . NO System is performing to specification at this time.

AQS (Air Quality System) keeps air inside in the most suitable state for driver. In polluted area AQS detects hazardous gas and intercepts inflow automatically, Inversely, In freshsh area it allows the inflow of air to prevent the shortage of air and the accumulation of carbon dioxide. AQS sensor is located at front side of condenser and once hazardous gas is detected, it delivers the voltage signal to A/C controller for closing intake door.

The A/C controller sets DTC B1259 if preheating time of AQS sensor is over 40sec or signal from AQS sensor is not within specifications.

DTC DETECTING CONDITION CHART

Refer to DTC B1258 .

Scheme 192

1. Connect scantool to Data Link Connector (DLC).
2. Engine "ON"
3. Monitor the "AQS sensor" Parameter on the Scantool. While making hazardous gas such as tobacco fumes around the AQS sensor.
4. Are the DTC B1259 present and is parameter of "AQS SENSOR" fixed? YES Go to " «INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Fault is intermittent caused by poor contact in the sensor's and/or A/C controller's connector or was repaired and A/C controller memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Refer to DTC B1258 .

Scheme 193

1. Check for open in harness. Ignition "ON" Disconnect AQS sensor. Measure voltage value between terminal "3" of AQS sensor and chassis ground. Specification : Approx. 12V Is the measured resistance within specifications? YES Go to " «COMPONENT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Check for open in harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Refer to DTC B1258 .

Refer to DTC B1258 .

Scheme 194

Temperature control actuator located at heater unit, regulates the temperature by the procedure as follows. Signal from control unit adjusts position of temp, door by operating temp, motor and then temperature will be regulated by the hot/cold air ratio decided by position of temp. door.

The A/C controller sets DTC B2406 if the air mix actuator doesn't move to intended position within 40sec (In this case, A/C controller try to move temp, door for 2sec. 3 times, every 20 sec. before setting DTC).

DTC DETECTING CONDITION CHART

Scheme 195

1. Connect scantool to Data Link Connector (DLC).
2. Engine "ON"
3. Monitor the "Driver Air Mix Potentiometer" Parameter on the Scantool while operating temp, switch.
4. Are the DTC B2406 present and is parameter of "Driver AIR MIX Potentiometer" fixed? * There is any fault in Driver AIR MIX Motor. If the parameter of "Driver AIR MIX DOOR" is 30% or less when the actuator operates to the hot position, or If the parameter is 60% and more when the actuator operates to the cold position. YES Go to " «INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Fault is intermittent caused by poor contact in the sensor's and/or A/C controller's connector or was repaired and A/C controller memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

1. Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found? YES Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Go to " «SIGNAL CIRCUIT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 196

Scheme 197

1. Check for open in harness. Ignition "OFF" Disconnect Driver Air Mix potentiometer. Measure resistance between terminal "3,4" of Driver Air Mix Motor and terminal "15,16" of A/C control unit. Specification : Approx. 0 ohms Is the measured resistance within specifications? YES Go to " 2 Check for short to ground in harness" procedure. NO Check for open in signal harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.
2. Check for short to ground in harness. Ignition "OFF" Disconnect Driver Air Mix Actuator. Measure resistance between terminal "3,4" of Driver Air Mix Motor and chassis ground. Specification : Approx. infinity ohms Is the measured resistance within specifications? YES Go to " «VISUAL/PHYSICAL INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning__visualphysical-inspection) " procedure. NO Check for short to ground in signal harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 198

1. Check actuator. * Check if Driver Air Mix Actuator works properly through ACTUATION TEST. Ignition : ON Connect Scantool and select" ACTUATION TEST" mode and press [F1] Does Driver Air Mix Actuator work properly? YES Go to " «COMPONENT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 199

Scheme 200

Scheme 201

1. Check actuator motor. Ignition "OFF" Disconnect Driver Air Mix Potentiometer. Verify that the temperature actuator operates to the hot position when connecting 12V to the terminal "3" and grounding terminal "4". Verify that the temperature actuator operates to the cool position when the connections are reversed. Does the actuator work properly? YES Go to " 2 Check potentiometer" procedure. NO Substitute with a known-good actuator and check for proper operation. If the problem is corrected, replace actuator and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.
2. Check potentiometer Ignition "ON" Connect Driver Air Mix potentiometer. Measure voltage between terminal "6" and "7" of Driver Air Mix potentiometer while operating the temp, switch. Specification: Refer the specifications in (Scheme 3)) VOLTAGE SPECIFICATION Door position Voltage (6-7) Error detecting MAX. Cooling 0.3 ± 0.15V Low voltage: 0.08V or less MAX. Heating 4.7 ± 0.15V High voltage: 4.9V or more Is the measured voltage within specifications in (Scheme 3)? YES Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Substitute with a known-good actuator and check for proper operation. If the problem is corrected, replace actuator and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.
3. Check A/C Control Unit. Engine "ON" Connect A/C Control Unit. Measure voltage between terminal "13" and "14" of A/C Control Unit while operating the temp, switch. Specification:Approx. 12V Is the measured voltage within specifications? YES Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Substitute with a known-good A/C Control Unit and check for proper operation. If the problem is corrected, replace A/C Control Unit and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

After a repair, it is essential to verify that the fault has been corrected.

1. Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode and then clear DTC.
2. Operate the vehicle and monitor the DTC on the scantool.
3. Are any DTCs present? YES Go to the «APPLICABLE TROUBLESHOOTING PROCEDURE»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) . NO System is performing to specification at this time.

Intake door located at heater unit controls the inlet of car. When driver operates the intake switch, A/C controller recirculationeives mode signal from intake switch and operates intake door actuator to turn intake door to intended position, (with fresh mode signal, intake door is closed and with fresh mode signal, intake door is opened.

The A/C controller sets DTC B2408 if the intake motor Doesn't move to intended position within 40sec (The A/C controller attempts to move the intake door for a 2 second duration at a frequency of 3 times every 20 seconds before storing a DTC.)

DTC DETECTING CONDITION CHART

* Voltage value of Intake potentiometer as a function of position of Intake door

VOLTAGE SPECIFICATION

Scheme 202

1. Connect scantool to Data Link Connector (DLC).
2. Engine "ON"
3. Monitor the "Intake Potentiometer" Parameter on the Scantool while operating Intake switch.
4. Are the DTC B2408 present and is parameter of "Intake Potentiometer" fixed? * There is any fault in Intake potentiometer. If the parameter of "Intake potentiometer" is 30% or less when the actuator operates to the fresh position, or If the parameter is 60% and more when the actuator operates to the recirculation position. YES Go to " «INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Fault is intermittent caused by poor contact in the sensor's and/or A/C controller's connector or was repaired and A/C controller memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

1. Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found? YES Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Go to " «SIGNAL CIRCUIT INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.

Scheme 203

Scheme 204

1. Check for open in harness. Ignition "OFF" Disconnect Intake potentiometer. Measure resistance between terminal "3,4" of Intake potentiometer and terminal "22,23" of A/C control unit. Specification : Approx. 0 ohms Is the measured resistance within specifications? YES Go to " 2 Check for short to ground in harness" procedure. NO Check for open in signal harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.
2. Check for short to ground in harness. Ignition "OFF" Disconnect Driver Air Mix Actuator. Measure resistance between terminal "3,4" of Driver Air Mix Motor and chassis ground. Specification : Approx. infinity ohms Is the measured resistance within specifications? YES Go to " «VISUAL/PHYSICAL INSPECTION»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure. NO Check for short to ground in signal harness. Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(/hyundai/santa-fe/ii-2005-2010/remont/ac-compressor/#heating-ventilation-air-conditioning) " procedure.