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Curriculum
Module 08intermediate

Advanced Multimeter Diagnosis

Use the DMM as a precision diagnostic instrument for voltage, resistance, frequency, duty cycle, diode testing and sensor/actuator circuits.

Lessons

10

Estimated time

200 min

Completed

00/10

Start lesson 01

By the end of this module

Choose the correct measurement for the fault in front of you — and trust the result.

Lessons

10 total

  1. 01Meter Accuracy, Resolution and Input ImpedanceInterpret what the meter can and cannot prove.20 min
  2. 02Millivolt TestingUse mV readings meaningfully in automotive circuits.20 min
  3. 03Diode Test ModeUse diode mode appropriately without overgeneralising results.20 min
  4. 04Frequency MeasurementMeasure and interpret frequency where the signal is suitable.20 min
  5. 05Duty Cycle MeasurementInterpret duty-cycle control and understand why average voltage can mislead.20 min
  6. 06Min/Max and Capture FunctionsUse meter recording features to catch short-duration faults.20 min
  7. 07Testing 5V Reference CircuitsDiagnose a missing or dragged-down reference systematically.20 min
  8. 08Pull-Up and Pull-Down Circuit DiagnosisUnderstand why an unplugged signal may read voltage rather than zero.20 min
  9. 09Loaded Testing With Test Lamps and ResistorsProve circuit capacity rather than relying on unloaded voltage.20 min
  10. 10Diagnostic Case: Misleading Meter ReadingRecognise when a seemingly correct voltage is not a usable supply.20 min