To help determining whether the 2 wire Hall effect ABS sensor is functioning correctly, different deviations from the example signal are mentioned along with possible causes. Power source (a battery normally) 5. Answer. Instructions for an Equus Inductive Xenon Timing Light. With a lab scope a 2 wire Hall effect ABS sensor signal voltage is measured with the wheel turned by hand. Step 3. Providing tool knowledge, appliance/device testing tips, and DIY project info in an easy-to read & non-intimidating style. Set your multimeter to the millivolt (mV) DC setting or 2 DC Volts setting. Alternatively, you can use a multimeter set to measure AC to check to see if the AC output is between 0.3 and 1 volt during engine cranking. However, you might sometimes experience some difficulty locating the cam position sensor to be able to diagnose it by testing it. 03:55 close to the sensor and a fuse with the. Make a point of checking on some internal components on what might be the problem; this is through consulting experts. Connect the digital multimeter to the battery and the pump, both on their negative terminals. 7. You first need to examine the status of your wires as well as the electrical connectors. 2. He has written Web content for eHow, and designed the DIY-Auto-Repair.com website. The National Electrical Code specifies certain wire colors as hot wires. The DC setting will give you a voltage reading that you can use to test your sensor. Copyright © 2021 Hand Tools for Fun | All Rights Reserved. The result is an A/C sine wave voltage that the on-board computer uses to determine camshaft position. A vehicle speed sensor, or VSS, is a sensor that is used to determine how fast your vehicle is traveling. Having read through this article, you now have an idea on how to test 2 wire cam sensors with your multimeter. Touch the black meter probe to the 0V wire of the sensor. Since the damaged coil, firstly the resistance is influenced. These two wires are the DK GRN (dark green) wire and the LT BLU (light blue) wire of the sensor's harness connector.. Reset the ECU After Changing an O2 Sensor→. As the magnet comes closer to the sensor, the output voltage rises. Attach the ohmmeter's black wire to a grounded surface, such as the vehicle's negative battery terminal. In residential construction these colors are black and red. position sensor to be able to diagnose it by testing, check whether you have wires are either broken, Locking of transmission in single gear forcing you to restart it over and over again. Replace the sensor if it does not fall within the specified range indicated in the service manual. If resistance is infinite or 0 ohms, replace the sensor. Go to: CMP TEST 3: Ground Circuit. Note the measurement and consult your user manual to determine whether your camshaft sensor has the proper resistance. You then need to pass a magnet in front of the sensor. The sensor must be removed for resistance testing with a multimeter. The GRN wire is the signal wire that transmits the camshaft position sensor signal to the PCM and is the one labeled with the letter B in the photo. Expert: Mark replied 7 years ago. With an ABS sensor disconnected you can probe the terminals with a multimeter, eliminating the need to remove the sensor from the vehicle. Typically, if the shaft is rotated at about one turn every 2 seconds the output should be around .7 to 1.0 Volts AC. Check for the presence of power flowing through the circuit. Another way to test the crankshaft sensor with a multimeter is by checking the output voltage with the engine cranking. Do not attach the other end of the jumper wire to the relay at this time. Attach one end of the multimeter to each wiring lead of the sensor. The tools needed for testing either a 2 or 3 wire speed sensor are essentially a multimeter with the clamp leads, and a drill. Touch the black cable on your multimeter to the ground and the other probe cable to touch the power wire. DMMs typically have a test function called “diode test” where it injects current and measure the voltage across the diode under test. 04:15 piece of metal if you bring it up close. Set your multimeter to Continuity - the symbol looks a bit like this: •))). You can remove the sensor, and then test the resistance. Have someone who is helping to turn the ignition key to start your vehicle’s engine and examine if energy is flowing through your circuit. Remember, the CMP sensor must remain connected to its engine wiring harness connector. Step 4. Motor controller 4. A cam sensor can generate a variety of problems depending on your vehicle’s model, as well as the kind of failure it has developed. If resistance is infinite or 0 ohms, replace the sensor. I have the sensor out of the car.Is there anyway the multimeter will pick up if there is a fault in the sensor.