Hyundai Santa Fe (2006 year). Manual — part 679
HA -94
HEATING, VENTILATION AND AIR CONDITIONING
1
2
3
5 4
6
1. Motor(-)
2. Sensor ground
3. Humidity sensor signal
4. In-car sensor temp. signal
5. Sensor power (5V)
6. Motor(+)
Ω
SCMHA6505L
4) Is the measured resistance within specifications?
YES
Go to "Power circuit Inspection " procedure.
NO
Check for short to ground in harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
POWER SUPPLY CIRCUIT INSPECTION
ED180193
1.
Check for open in power harness.
1) Ignition "ON"
2) Disconnect Humidity Sensor.
3) Measure voltage value between terminal "5" of Humidity Sensor and chassis ground.
Specification : 5V
1
2
3
5 4
6
1. Motor(-)
2. Sensor ground
3. Humidity sensor signal
4. In-car sensor temp. signal
5. Sensor power (5V)
6. Motor(+)
v
SCMHA6506L
4) Is the measured voltage within specifications?
YES
Go to "Component Inspection " procedure.
NO
Check for open in power harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
BLOWER AND A/C CONTROLS (AUTOMATIC)
HA -95
COMPONENT INSPECTION
E21ABF1E
Refer to DTC B1200.
VERIFICATION OF VEHICLE REPAIR
ECEB8038
Refer to DTC B1200.
HA -96
HEATING, VENTILATION AND AIR CONDITIONING
DTC B1202 WATER TEMPERATURE SENSOR OPEN (HIGH)
COMPONENT LOCATION
ECDA84B4
Water Temperature Sensor
EQBF512A
GENERAL DESCRIPTION
E79C5561
A water temp. sensor located at heater unit, detects coolant temperature. Its signal is used for cold engine lockout control.
When the driver operates the heater before the engine is warmed up, the signal from sensor causes the heater control
unit to reduce blower motor speed until coolant temperature reaches the threshold value.
DTC DESCRIPTION
EFAC8202
The A/C controller sets DTC B1202 if there is an open circuit in water temp. sensor signal harness or the measured
resistance value of the sensor is more than the threshold value(about 176.3kΩ )
DTC DETECTING CONDITION
EDDA37B8
Item
Detecting Condition
Possible cause
DTC Strategy
• Resistance check
Threshold value
• > 176.3 kΩ
Detecting time
• 0.3 sec
FAIL SAFE
• Control with the value of -2 C(28.4 F)
• Open Circuit in harness
• Faulty water temp. Sensor
• Faulty A/C control unit
SPECIFICATION
EEDFF0BB
Temperature[ C( F)]
Resistance(kΩ )
Temperature[ C( F)]
Resistance(kΩ )
-30(-22)
176.3
25(77)
10
-15(5)
73.6
35(95)
6.5
0(32)
32.9
60(140)
2.5
15(59)
15.8
80(176)
1.2
BLOWER AND A/C CONTROLS (AUTOMATIC)
HA -97
MONITOR SCANTOOL DATA
E23A4490
1.
Connect scantool to data link connector(DLC).
2.
Engine "ON"
3.
Monitor the "WATER TEMP. SENSOR" Parameter on the Scantool.
1.2 CURRENT DATA
FIX
SCRN FULL
PART GRPH HELP
-2 C
12.0 C
11.5 C
12.5 C
0.00 V
91.75 %
54.89 %
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
B1202 WATER TEMP. SENS - OPEN(HIGH)
Fig 1 : The current data in abnormal state.
Fig 2 : DTC B1202.
Fig. 1
Fig. 2
EQBF512B
4.
Are the DTC B1202 present and is parameter of "WATER TEMP. SENSOR" fixed?
※
Parameter of "WATER TEMP. SENSOR" will be fixed at -2℃(28.4 F), if there is any fault in WATER TEMP. SEN-
SOR.
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
EC92E599
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.
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