Hyundai Santa Fe (2006 year). Manual — part 702
HA -186
HEATING, VENTILATION AND AIR CONDITIONING
Specification : Approx. 12V
V
1
2
3
1
2
3
1. AQS signal input
2. AQS ground
3. AQS power
SCMHA6563L
4) Is the measured resistance within specifications?
YES
Go to "Component inspection " procedure.
NO
Check for open in harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
COMPONENT INSPECTION
E81F882D
Refer to DTC B1258.
VERIFICATION OF VEHICLE REPAIR
E5CA9EEA
Refer to DTC B1258.
BLOWER AND A/C CONTROLS (AUTOMATIC)
HA -187
DTC B2406 AIR MIX MOTOR (DRIVER)
COMPONENT LOCATION
EFE0376F
Temperature Control Actuator
SCMHA6708L
GENERAL DESCRIPTION
E64AC948
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.
DTC DESCRIPTION
E2ABFEF5
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
EA8F2B90
Item
Detecting Condition
Possible cause
DTC Strategy
• Voltage check
Threshold value
• < 0.1V
Detecting time
• 0.3 sec
FAIL SAFE
-
• Poor connection of
connected part
• Open circuit in harness
• Short circuit in harness
• Faulty driver Air Mix
potentiometer
• Fault A/C Control Unit
HA -188
HEATING, VENTILATION AND AIR CONDITIONING
SPECIFICATION
EC47D91F
4.7V
2.5V
0.3V
WARM
COOL
AIR MIX Potentiometer
Output
voltage
EQBF521B
MONITOR SCANTOOL DATA
E41751B0
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.
1.2 CURRENT DATA
FIX
SCRN FULL
PART GRPH HELP
14.0 C
12.0 C
12.0 C
13.0 C
0.00 V
22.7 %
51.76 %
255
HEATER WATER TEMP.SNSR
IN-CAR TEMP.SENSOR
AMBIENT AIR TEMP.SNS
EVAPORATIVE SENSOR
DRIVER PHOTO SENSOR
AIR MIX POPENTIO.(DR.)
DIRECTION POTENIO.DR.
PASSENGER PHOTO SENSOR
1.1 DIAGNOSTIC TROUBLE CODES
NUMBER OF DTC : 1 ITEMS
PART
ERAS
HELP
B2406 DRIVER AIR MIX MOTOR
Fig 1 : The current data in abnormal state.
Fig 2 : DTC B2406.
Fig. 1
Fig. 2
EQBF525A
BLOWER AND A/C CONTROLS (AUTOMATIC)
HA -189
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" 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" procedure.
TERMINAL AND CONNECTOR INSPECTION
E7F42C7B
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" procedure.
NO
Go to "Signal circuit inspection" procedure.
SIGNAL CIRCUIT INSPECTION
EAE92A03
1.
Check for open in harness.
1) Ignition "OFF"
2) Disconnect Driver Air Mix potentiometer.
3) Measure resistance between terminal "3,4" of Driver Air Mix Motor and terminal "15,16" of A/C control unit.
Specification : Approx. 0 Ω
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