Hyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual / Engine Control / Fuel System / Engine Control System / Boost Pressure Sensor (BPS)

Hyundai Santa Cruz: Engine Control System / Boost Pressure Sensor (BPS)

- Description Boost pressure sensor (BPS) is installed on top of intercooler output pipe to measure the absolute intake manifold pressure.

- Specification ▷ Type : Piezo-resistive pressure sensor type

Item	Specification
Rated Voltage (V)	5
Pressure Range (KPa)	10 - 300
Dynamic Power Voltage(V)	4.75 - 5.25

Pressure [kPa (kgf/cm², psi)]	Output Voltage (Vref = 5V)
10 (0.10, 1.45)	0.5
155 (1.58, 22.47)	2.5
300 (3.05, 43.51)	4.5

- Circuit Diagram

Harness Connector

- Inspection

1. Connect the diagnostic tool on the Data Link Connector (DLC).

2. Measure the output voltage of the BPS during idle with IG ON.

Pressure [kPa (kgf/cm², psi)]	Output Voltage (Vref = 5V)
10 (0.10, 1.45)	0.5
155 (1.58, 22.47)	2.5
300 (3.05, 43.51)	4.5

- Removal

1.Turn ignition switch OFF and disconnect the battery negative (-) cable.

2.Lift the vehicle.

3.Remove the engine room under cover.(Refer to Engine Mechanical System - "Engine Room Under Cover")

4.Disconnect the boost pressure sensor connector (A).

5.Remove the mounting bolts (B), and then remove the boost pressure sensor.

- Installation

• Install the component to the specified torques.

• If a part is dropped, replace it with a new one and discard the dropped part as invisible damage may be caused.

• Insert the sensor in the installation hole and be careful not to damage it.

1.Install in the reverse order of removal.

Intake Air Temperature Sensor (IATS)

- Description Mounted inside the Manifold Absolute Pressure Sensor, Intake Air Temperature Sensor (IATS) detects the intake air temperature.To precisely calculate the amount of air, correction ...

Ambient Temperature Sensor (ATS)

- Description Installed on the front-end module, the Ambient Temperature Sensor (ATS) senses the ambient temperature. ECM receives the intake air temperature and ambient air temperature at the ...

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