Hyundai Santa Fe (2006 year). Manual — part 685
HA -118
HEATING, VENTILATION AND AIR CONDITIONING
*
*
3
4
5
6
7
3. Motor (Rec)
4. Motor (Fre)
5. Potentiometer ground
6. Potentiometer signal
7. Sensor reference voltage(+5V)
Ω
SCMHA6523L
4) Is the measured resistance within specifications?
YES
Go to "Power circuit Inspection" procedure.
NO
Check for short to ground in signal harness. Repair as necessary and go to "Verification of Vehicle Repair"
procedure.
POWER SUPPLY CIRCUIT INSPECTION
E638022A
1.
Check for short or open in harness.
1) Ignition "ON"
2) Connect Intake Potentiometer.
3) Measure voltage between terminal "7" of Intake Potentiometer and chassis ground.
Specification : Approx. 5V
*
*
3
4
5
6
7
3. Motor (Rec)
4. Motor (Fre)
5. Potentiometer ground
6. Potentiometer signal
7. Sensor reference voltage(+5V)
v
SCMHA6524L
4) Is the measured voltage within specifications?
YES
Go to "Component inspection" procedure.
NO
Check for short or open in power harness. Repair as necessary and go to "Verification of Vehicle Repair" pro-
cedure.
BLOWER AND A/C CONTROLS (AUTOMATIC)
HA -119
COMPONENT INSPECTION
E4DCDE12
1.
Check actuator motor.
1) Ignition "OFF"
2) Disconnect Intake Potentiometer.
3) Verify that the temperature actuator operates to the fresh position when connecting 12V to the terminal "3" and
grounding terminal "4".
4) Verify that the temperature actuator operates to the recirculation position when the connections are reversed.
(-)
(+)
*
*
3
4
5
6
7
5. Potentiometer ground
6. Potentiometer signal
7. Sensor reference voltage(+5V)
SCMHA6525L
5) Does the actuator work properly?
YES
Go to "Check potentiometer" procedure.
NO
Substitute with a known-good actuator and check for proper operation. If the problem is corrected, replace ac-
tuator and then go to "Verification of Vehicle Repair" procedure.
2.
Check potentiometer
1) Ignition "ON"
2) Connect Intake potentiometer.
3) Measure voltage between terminal "5" and "6" of Intake potentiometer while operating Intake switch.
Specification : Refer to the specifications
*
*
3
4
5
6
7
3. Motor (Rec)
4. Motor (Fre)
5. Potentiometer ground
6. Potentiometer signal
7. Sensor reference voltage(+5V)
v
SCMHA6526L
HA -120
HEATING, VENTILATION AND AIR CONDITIONING
Door position
Voltage (5-6)
Error detecting
Fresh
0.3 ± 0.15V
Low voltage : 0.08V or less
Recirculation
4.7 ± 0.15V
High voltage : 4.9V or more
Specifications : Voltage value of Intake potentiometer as a function of position of Intake.
4) 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" procedure.
NO
Substitute with a known-good actuator and check for proper operation. If the problem is corrected, replace ac-
tuator and then go to "Verification of Vehicle Repair" procedure.
VERIFICATION OF VEHICLE REPAIR
E5797203
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.
NO
System is performing to specification at this time.
BLOWER AND A/C CONTROLS (AUTOMATIC)
HA -121
DTC B1209 INTAKE POTENTIOMETER SHORT
COMPONENT LOCATION
E093235F
Intake Door Actuator
SCMHA6701L
GENERAL DESCRIPTION
EE9BD028
Intake door located at heater unit controls the inlet of car. When driver operates the intake switch, A/C controller recir-
culationeives 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).
DTC DESCRIPTION
E2770B43
The A/C controller sets DTC B1209 if there is a short to power in the Intake potentiometer.
DTC DETECTING CONDITION
EEE85217
Item
Detecting Condition
Possible cause
DTC Strategy
• Voltage check
Threshold value
• > 4.9V
Detecting time
• 0.3 sec
FAIL SAFE
• Fix at fresh
• Short circuit in harness
• Faulty Intake potentiometer
• Open circuit in harness
SPECIFICATION
E39D5040
Refer to DTC B1208.
MONITOR SCANTOOL DATA
E43084A0
1.
Connect scantool to Data Link Connector(DLC).
2.
Engine "ON"
3.
Monitor the "Intake Potentiometer" Parameter on the Scantool while operating Intake switch.
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