Fluke 88V multimeter: Automotive Testing applications

Hey guys, in our last articles we explain you brief description and measurements of electrical parameters with this multimeter. If you want to gather information regarding this you may follow Descriptive article on Fluke 88v automotive multimeter measurements. Here we are going to explain you some automotive testing applications of Fluke 88v Automotive multimeter.
Fluke 88V automotive multimeter

Want to know how Fluke 88v multimeter measures electrical parameters ? If yes then Click here

How to measure RPM with inductive pickup using Fluke 88V Automotive multimeter?

You can measure RPM in either the dc volts or ac volts function.If we measure RPM in ac volts, the measurement is ac coupled while if we measure RPM in dc volts, the measurement is dc coupled.For getting the stable readings, you should use the function setting if RPM readings appear noisy. Two functions are:
  1. RPMis used for conventional 4-cycle engines.
  2. RPMis used for 2-cycle engines or waste spark DIS 4-cycle engines (count/revolution).

Steps for measuring RPM with inductive pick up using multimeter are:

  1. Turn the engine off before connecting or removing the pickup because the ignition system can   create a  potential shock hazard.
  2. Insert plug of Inductive Pickup in the input terminals of the multimeter.Insert -ve side of the plug  in COM port and +ve side of  the plug in RPM port.
  3. Turn rotary switch to 
  4. For 4-cycle engines pressonce to select RPM For 2-cycle engines and for DIS waste spark systems, press twice to select RPM 
  5. Clamp the Inductive Pickup to a plug wire near the spark plug.
  6. Turn the engine on and read RPM on the display. Turn the engine off before removing Pickup.

Fluke 88v automotive multimeter measuring setup of RPM with inductive pick up

How to measure internal coil resistance of an ignition coil with Fluke 88V Automotive multimeter?

While measuring resistance always ensures that the contact between the probe and the circuit is clean because dirt, oil, dust etc will adversely affect the resistance measurement.

Steps for measuring internal coil resistance of an ignition coil are:

  1. Inside the com jack insert black lead and inside thejack insert Red lead.
  2. Turn rotary switch to 
  3. To measure the resistance in primary windings touch the probes as shown in the figure.
  4. Reading on display indicates that the resistance value should be less than a few ohms
  5. To measure the resistance in secondary windings touch the probes as shown in the figure.
  6. Reading on the display indicates that the resistance value should typically be about 10K.
Note: To avoid possible electric shock or damage to the Meter turn engine off before making measurements.

Fluke 88V automotive multimeter measuring set up of internal coil resistance

How to measure Pulse width on a port fuel injector with Fluke 88V Automotive multimeter?

Steps for measuring Pulse width on a port fuel injector are:

  1. Inside the com jack insert the black lead and inside thejack insert the Red lead.
  2. Turn the rotary switch to
  3. Connect the test leads to the injector as shown in the figure.
  4. To select pulse width press Hz% labeled button three times.The display shows ms.
  5. Start the engine and read the display.
 Measurement set-up of pulse width with fluke 88v multimeter

How to measure voltages on a typical oxygen sensor using Fluke 88V Automotive multimeter?

Steps for measuring voltages on a typical oxygen sensor are:

  1. Turn the engine off and inside the com jack insert the black lead and inside thejack insert the Red lead.
  2. Turn the rotary switch to 
  3. To select 6v range press range labelled button.
  4. Make the connections as shown in the figure.
  5. Start the engine and press min/max labelled button to select min/max recording if the oxygen sensor is unheated.
  6. Press min/max labelled button  to display maximum (MAX) oxygen voltage; press again to display minimum (MIN) voltage; press again to display average (AVG) voltage; press and hold down MIN/MAX for 2 seconds to exit.
Fluke 88v multimeter measuring setup of voltage on a typical oxygen sensor

How to measure starter circuit voltage drop using Fluke 88V Automotive multimeter?

Steps for measuring starter circuit voltage drop are:
  1. Inside the com jack insert the black lead and inside thejack insert the Red lead.
  2. Tirn the rotary switch to mV or Temperature labelled button.If you are measuring voltage more than 600mV then 0L will  appear on screen.To select 6V range turn the rotary switch to 
  3.  Press Autohold button.
  4. Touch probes across the connection to be measured.
  5. Note down the reading display on screen.
  6. Press Autohold button again to exit AutoHold.
         Fluke 88v multimeter measuring setup of starter circuit voltage drop

How to test continuity in a switch using Fluke 88V Automotive multimeter?

Continuity test ensures that circuit is closed.It detects open or short as fast as 1 millisecond and acts as a troubleshooting aid for intermittents associated with switches and relays etc.
Steps for testing continuity in a switch are:
  1. Inside the com jack insert the black lead and inside thejack insert the Red lead.
  2. Turn the rotary switch to
  3. Press the continuity function button.
  4. Connect probes to the stoplight switch.
  5. Listen tone by pressing the brake pedal, if tone sounds it indicates stoplight switch is good or vice versa.
        Fluke 88v multimeter measuring set up of testing continuity of switch
Hope you all like this article. If you have any question regarding automotive testing applications, feel free to ask in comments.

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