Hyundai Santa Cruz: Controller / Heater Control Unit
1. Heater control unit
| Pin No | Connector A | Connector B |
| 1 | Mode control actuator feedback | Ground |
| 2 | Intake actuator feedback | Sensor ground |
| 3 | Passenger's temperature control actuator feedback | ECV (-) |
| 4 | Driver's temperature control actuator feedback | ECV (+) |
| 5 | Auto defogging actuator feedback | - |
| 6 | - | - |
| 7 | - | - |
| 8 | Photo sensor (-) LEFT | Blower INH |
| 9 | Photo sensor (-) RIGHT | Blower IS |
| 10 | - | Blower PWM IN |
| 11 | Auto defogging actuator SDA | - |
| 12 | Auto defogging actuator SCL | - |
| 13 | Auto defogging actuator TEMP | Sensor (+ 5V) |
| 14 | Ambient temperature sensor (+) | - |
| 15 | Evaporator sensor (+) | - |
| 16 | - | Battery (+) |
| 17 | - | Ground |
| 18 | - | - |
| 19 | - | - |
| 20 | - | - |
| 21 | Mode control actuator (Vent) | - |
| 22 | Mode control actuator (DEF) | - |
| 23 | Intake actuator (FRE) | - |
| 24 | Intake actuator (REC) | - |
| 25 | Passenger's temperature control actuator (Cool) | Blower operation signal |
| 26 | Passenger's temperature control actuator (Warm) | - |
| 27 | Driver's temperature control actuator (Cool) | PTC Relay |
| 28 | Driver's temperature control actuator (Warm) | - |
| 29 | Auto defogging actuator (Open) | Blower relay |
| 30 | Auto defogging actuator (Close) | LIN BUS (Climate control) |
| 31 | - | IGN1 |
| 32 | - | IGN2 |
| 33 | - | |
| 34 | E_CAN (Low) | |
| 35 | E_CAN (High) | |
| 36 | - | |
| 37 | - | |
| 38 | - | |
| 39 | - | |
| 40 | Ground |
1.Disconnect the battery (-) terminal.
2.Remove the glove box.(Refer to Body (Interior and Exterior) - "Glove Box")
3.Press the lock pin (B) and then remove the crash pad under cover (A).
4.Disconnect the blower motor connector (A).
5.Remove the heater control unit (A), after removing the screws.
6.Disconnect the heater control unit connector.
7.Install in the reverse order of removal.
• Make sure the connector is connected properly.
Heater & A/C Control Unit (DATC)
- Terminal Function
Connector Pin Function
Pin NoConnector A
1Battery (+)
2-
3-
4LIN BUS (Climate control)
5-
6-
7-
8-
9IGN2
10ISG B+
11IGN1
12-
13Incar sensor (+)
14-
15Sensor G ...
Other information:
Hyundai Santa Cruz 2021-2025 Owners Manual: Smart Cruise Control Settings
Setting features
Turning on Smart Cruise Control
Press the Driving Assist ()
button
to turn on Smart Cruise Control. The
speed will be set to the current speed
on the cluster.
If there is no vehicle in front of you,
the set speed will be maintained, but
if there is a vehicle in front ...
Hyundai Santa Cruz 2021-2025 Owners Manual: Exterior Care
Exterior general caution
It is very important to follow the label
directions when using any chemical
cleaner or polish. Read all warning and
caution statements that appear on the
label.
Finish maintenance
Washing
To help protect your vehicle’s finish from
rust and deterioration, wash it thoro ...
