Hyundai Santa Fe (2006 year). Manual — part 704
HA -194
HEATING, VENTILATION AND AIR CONDITIONING
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 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" procedure.
VERIFICATION OF VEHICLE REPAIR
E9F02EC4
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 -195
DTC B2408 INTAKE MOTOR FAILURE
COMPONENT LOCATION
EF1AEBEF
Intake Door Actuator
SCMHA6701L
GENERAL DESCRIPTION
EBF43D13
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
EDEFA576
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 freshquency of 3 times every 20 seconds before storing a
DTC.)
DTC DETECTING CONDITION
E70DC6B0
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 Intake potentiometer
SPECIFICATION
E6B3190E
※
Voltage value of Intake potentiometer as a function of position of Intake door
Door position
Voltage
Threshold value
Fresh
0.3±0.15V
Voltage value 0.08V or less
Recirculation
4.7±0.15V
Voltage value 4.9V or more
HA -196
HEATING, VENTILATION AND AIR CONDITIONING
MONITOR SCANTOOL DATA
E73BFCC6
1.
Connect scantool to Data Link Connector(DLC).
2.
Engine "ON"
3.
Monitor the "Intake Potentiometer" Parameter on the Scantool while operating Intake 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
84.69 %
51.76 %
255
22.7 %
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
INTAKE SENSOR
1.1 DIAGNOSTIC TROUBLE CODES
NUMBER OF DTC : 1 ITEMS
PART
ERAS
HELP
B2408 INTAKE MOTOR
Fig 1 : The current data in abnormal state.
Fig 2 : DTC B2408.
Fig. 1
Fig. 2
EQBF529A
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 actua-
tor 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" 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.
BLOWER AND A/C CONTROLS (AUTOMATIC)
HA -197
TERMINAL AND CONNECTOR INSPECTION
E0CEF15E
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
E0DD314B
1.
Check for open in harness.
1) Ignition "OFF"
2) Disconnect Intake potentiometer.
3) Measure resistance between terminal "3,4" of Intake potentiometer and terminal "22,23" of A/C control unit.
Specification : Approx. 0 Ω
1
2
3
4
6
9
10
12
13
14
15
16
17
18
19
20
21
22
23
24
*
* *
*
25
26
*
*
3
4
5
6
7
3. Motor
4. Motor
5. Potentiometer ground
6. Potentiometer signal
7. Sensor reference voltage(+5V)
Ω
Ω
SCMHA6569L
4) Is the measured resistance within specifications?
YES
Go to "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" procedure.
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