1.Check the resistance of the ambient temperature sensor between terminals 1 and 2 whether it changes by changing the ambient temperature.
1. Ambient Sensor (+)
2. Sensor ground
Ambient temperature [°C (°F)] | Resistance between terminal 1 and 2 (kΩ) |
-30 (-22) | 480.41 |
-20 (-4) | 271.21 |
-10 (14) | 158.18 |
0 (32) | 95.096 |
10 (50) | 58.799 |
20 (68) | 37.315 |
30 (86) | 24.26 |
40 (104) | 16.13 |
50 (122) | 10.95 |
1.The heating, ventilation and air conditioning can be quickly diagnosed failed parts with vehicle diagnostic system (GDS).※ The diagnostic system (GDS) provides the following information.(1) Self diagnosis : Checking the failure code (DTC) and display.(2) Current data : Checking the system input / output data state.(3) Actuation test : Checking the system operation condition.(4) Additional function : Other controlling such as he system option and zero point adjustment.
2.Select the 'Car model' and the system to be checked in order to check the vehicle with the tester.
3.Select the 'Current data' menu to search the current state of the input / output data.The input / output data for the sensors corresponding to the Ambient Temperature Sensor can be checked.
1.Disconnect the negative (-) battery terminal.
2.Remove the engine room under cover.(Refer to Engine Mechanical System - "Engine Room Cover")
3.Disconnect the connector (A) and then remove the ambient temperature sensor (B).
4.To install, reverse the removal procedure.
Hyundai Accent (HC) (2017 - 2022) Service Manual: Heater & A/C Control Unit (Manual)
- Components ConnectorPin NOFunctionConnectorPin NOFunction B1Battery (+)B17IGN2 2-18ILL+ (TAIL) 3IGN119- 4-20Sensor ground REF (+5V) 5Intake actuator (Fresh)21HTD (Rear defog indicator) 6Intake actuator (Recirculation)22Hazard signal 7Intake actuator (Feedback)23Rear defog swich 8Evaporator Temperature Sensor (+)24- 9Ambient Temperature Sensor (+)25- 10Blower on signal common26- 11Max blower on signal27 12-28ECV+ 13C_CAN High29ECV- (Ground) 14C_CAN Low30ILL- (RHEO) 15-31Sensor ground 16Ground32Ground - Replacement 1.Hyundai Accent (HC) (2017 - 2022) Service Manual: General Safety Information and Caution
- Precautions General Precautions Please read the following precautions carefully before performing the airbag system service. Observe the instructions described in this manual, or the airbags could accidentally deploy and cause damage or injuries. • Except when performing electrical inspections, always turn the ignition switch OFF and disconnect the negative cable from the battery, and wait at least three minutes before beginning work.