Excavator sensor measurement method and data analysis

1. Water temperature sensor
Connection terminal resistance check:
1-2 resistance value: 1.5KΩ; 1-3 resistance value: none; 2-3 resistance value: none; 3-ground resistance value: 5.1KΩ;
When a circuit is broken, the control computer sets and the system temperature displayed on the monitor is: - 40℃; when a short circuit fault occurs, the control computer sets and the system temperature displayed on the monitor is: 120℃

2. Crankshaft position (CKP) sensor
Detection: The resistance value of the sensor is: 130Ω

3. Oil pressure sensor
Connection terminal resistance check:
1-3 resistance value: 9.95 KΩ; 1-2 resistance value: 2.31KΩ; 2-3 resistance value: 11.23KΩ;
When a circuit is broken or a short circuit fault occurs, the system pressure set by the control computer is: 1000Kpa

4. Atmospheric pressure sensor
Connection terminal resistance check:
1-3 resistance value: 25 KΩ; 1-2 Resistance value: 7.54KΩ; 2-3 resistance value: 26.3KΩ

5. Intake air temperature (IAT) sensor
Connection terminal resistance check:
1-2 resistance value: 2.4KΩ
When a circuit is broken, the system temperature set by the control computer is: - 40℃; when a short circuit occurs, the system temperature set by the control computer is: 120℃

6. Boost pressure sensor
Connection terminal resistance check:
1-3 resistance value: 71 KΩ; 1-2 resistance value: 2.32KΩ; 2-3 resistance value: 10.47KΩ
When a circuit is broken, the system pressure set by the control computer is: 36Kpa; when a short circuit occurs, the system pressure set by the control computer is: 500Kpa

7. Boost temperature sensor
Connection terminal resistance check:
1-2 resistance value: 2.4KΩ
When a circuit is broken, the system temperature set by the control computer is: - 40℃ voltage: 4.98V; when short circuit occurs, the system temperature set by the control computer is: 120℃ voltage: 1.17V

8. Common oil tank pressure sensor
Connection terminal resistance check:
1-3 resistance value: 11KΩ; 1-2 resistance value: 12.6KΩ; 2-3 resistance value: 2.92KΩ
When a circuit is broken, the system pressure set by the control computer is: Kpa; when a short circuit occurs, the system pressure set by the control computer is: Kpa

9. Fuel temperature sensor
Connection terminal resistance check:
1-2 resistance value: 1.31KΩ
When a circuit is broken, the system temperature set by the control computer is: -30℃; when a short circuit occurs, the system temperature set by the control computer is: 120℃.

10. SCV oil suction solenoid valve
1-2 resistance value: 0.9Ω
The above values ​​are all actual measured values ​​and are only for reference during maintenance.

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