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

Hyundai Elantra (CN7) 2021-2025 Service Manual / Engine Control / Fuel System / Engine Control System / Boost Pressure Sensor (BPS)

Description and operation

Description

Boost pressure sensor (BPS) is installed on top of intercooler output pipe to measures the pressure of supercharged air in the turbocharger.

Specifications

Specification

Pressure [kPa (kgf/cm², psi)]	Output Voltage (V) [Vref = 5.0V]
10 (0.10, 1.45)	0.5
40 (0.40, 5.80)	0.91
80 (0.81, 11.60)	1.47
120 (1.22, 17.40)	2.02
160 (1.63, 23.20)	2.57
200 (2.03, 29.00)	3.12
220 (2.24, 31.90)	3.4
240 (2.44, 34.80)	3.67
280 (2.85, 40.61)	4.22
300 (3.05 43.51)	4.5

Schematic diagrams

Circuit Diagram

Harness Connector

Repair procedures

Inspection

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

Measure the BPS output voltage in IG ON and idle.

Pressure [kPa (kgf/cm², psi)]	Output Voltage (V) [Vref = 5.0V]
10 (0.10, 1.45)	0.5
40 (0.40, 5.80)	0.91
80 (0.81, 11.60)	1.47
120 (1.22, 17.40)	2.02
160 (1.63, 23.20)	2.57
200 (2.03, 29.00)	3.12
220 (2.24, 31.90)	3.4
240 (2.44, 34.80)	3.67
280 (2.85, 40.61)	4.22
300 (3.05 43.51)	4.5

Removal

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

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

Remove the sensor (B) after remove the mounting bolt.

Tightening Torque :

9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

Installation

•	Install the component to the specified torques.

•	Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.

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

1.	Install in the reverse order of removal.

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