Articles

Showing 25–32 of 65 results

Crankshaft sensor inductive

With a lab scope an inductive crankshaft sensor is measured during cranking of an engine, as well as during idling. The signal from the sensor is shown and can be downloaded. To help determining whether an inductive crankshaft sensor is functioning correctly, different possible deviations from the example signal are mentioned along with probable causes.

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Measurement example / Sensor
Crankshaft

Lambda sensor (zirconia)

With a lab scope a zirconia lambda sensor is measured on an idling engine at operating temperature. The signal from the sensor is shown and can be downloaded. To help determining whether a zirconia lambda sensor and its heating is functioning correctly, different possible deviations from the example signals are mentioned along with probable causes.

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Measurement example / Sensor
Lambda

Broadband lambda sensor

With a lab scope a broadband oxygen sensor signal voltage is measured. The sensor signal is shown and can be downloaded. To help determining whether the broadband oxygen sensor is functioning correctly, different deviations from the example signal are mentioned along with possible causes.

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Measurement example / Sensor
Lambda

Manifold Absolute Pressure (MAP) sensor

With a lab scope a Manifold Absolute Pressure (MAP) sensor is measured under the following conditions: key on, cranking, idle, 2000 RPM, 3000 RPM and back to idle with an engine at operating temperature. The signal from the sensor is shown and can be downloaded. To help determining whether a MAP sensor is functioning correctly, different possible deviations from the example signal are mentioned along with probable causes.

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Measurement example / Sensor
MAP

Coolant temperature sensor

With a lab scope a coolant temperature sensor is measured from an engine in a warming up stage. The signal from the sensor is shown and can be downloaded. To help determining whether a coolant temperature sensor is functioning correctly, different possible deviations from the example signal are mentioned along with probable causes.

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Measurement example / Sensor

Throttle valve position sensor single

With a lab scope a throttle valve position sensor is measured with the key turned on and no running engine. The signal from the sensor is shown and can be downloaded. To help determining whether a throttle valve position sensor is functioning correctly, different possible deviations from the example signal are mentioned along with probable causes.

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Measurement example / Sensor
Throttle valve

Throttle valve position sensor dual

With a lab scope a throttle valve position sensor is measured with the key turned on and engine off. The signal from the sensor is shown and can be downloaded. To help determining whether a throttle valve position sensor is functioning correctly, different possible deviations from the example signal are mentioned along with possible causes.

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Measurement example / Sensor
Throttle valve

Direct injection servo hydraulic voltage and current

Lab scope measurement of servo hydraulic injector voltage and current on an idling engine at operating temperature. The measured voltage and current is shown and can be downloaded. To help determining whether the servo hydraulic injector is functioning correctly, different possible deviations from the example signal are mentioned along with possible causes.

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Measurement example / Actuator
Injection