Engine Oil Level Sensor Pin Details

[core7916]

Hello, I am testing a engine oil level sensor. in this i dont know the type of the sensor. and pin descripion.
I initially thought the sensor type was analog. Since i dont know the proper pin information i cant confirm it. Can some of you explain how this sensor works, how to test it. Sensor information i will give below.

Thank you

 

[Baluncore]

Can some of you explain how this sensor works, how to test it.

Google AI mode:
"how does the fomoco gk2a-6c624-bb oil level sensor work?"

"The Fomoco GK2A-6C624-BB oil level sensor works using ultrasonic technology to precisely measure the oil level in the engine and sends a pulse-width modulated (PWM) signal to the engine control unit (ECU)."

Chassis and power supply will connect to two of the pins. The third pin has a digital output signal that is Pulse Width Modulated.

To test it, identify the 0V chassis terminal. Identify the B+ 12V or +5V terminal. Connect the identified supplies.

Method 1. Look at the PWM signal with an oscilloscope to observe the pulse width, then lower the sensor into a jug of engine oil and watch the width change in proportion to depth in oil.

Method 2. Connect an LED with a 1K resistor in series, between ground and the PWM signal. Watch the LED brightness change with depth in oil.

Method 3. Make a low-pass filter from a 10K resistor in series with a 100uF capacitor. Connect it between the ground and the PWM signal. Measure the voltage across the capacitor with a voltmeter. Voltage will be proportional to the pulse width duty cycle.

 

[core7916]

Google AI mode:
"how does the fomoco gk2a-6c624-bb oil level sensor work?"

"The Fomoco GK2A-6C624-BB oil level sensor works using ultrasonic technology to precisely measure the oil level in the engine and sends a pulse-width modulated (PWM) signal to the engine control unit (ECU)."

Chassis and power supply will connect to two of the pins. The third pin has a digital output signal that is Pulse Width Modulated.

To test it, identify the 0V chassis terminal. Identify the B+ 12V or +5V terminal. Connect the identified supplies.

Method 1. Look at the PWM signal with an oscilloscope to observe the pulse width, then lower the sensor into a jug of engine oil and watch the width change in proportion to depth in oil.

Method 2. Connect an LED with a resistor between ground and the PWM signal. Watch the brightness change with depth.

Method 3. Make a low-pass filter from a 10K resistor in series with a 100uF capacitor. Connect it between the ground and the PWM signal. Measure the voltage across the capacitor with a voltmeter. Voltage will be proportional to the pulse width duty cycle.

But i dont have the information of pin details. i tried with different combination. but at one iteration sensor got spoiled. (observed smoke). now i have new sensor. so i want to make sure the pin details first

 

[Baluncore]

But i dont have the information of pin details. i tried with different combination. but at one iteration sensor got spoiled. (observed smoke). now i have new sensor. so i want to make sure the pin details first

Plug the sensor into the vehicle and measure the voltages. One pin will remain at zero volts, another will remain at +5V. The last pin will vary depending on depth in oil.

I asked Google AI for the pinout.
"
Terminal Pinout Identification
While the specific pin mapping (Pin 1, 2, 3) for this exact connector is usually proprietary to the Ford wiring schematic, this 3-pin sensor structure generally follows this pattern for combined level/temperature sensors:
Pin 1 (Power): 5V Reference Voltage (Sensor Power)
Pin 2 (Ground): Ground (Low-side ground)
Pin 3 (Signal): Output Signal (PWM or Variable Voltage)
"