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ELECTRICAL SYSTEM
Testing a diode:
12a. Isolate the diode in the circuit.
12b. Set the DMM to the diode or Ω scale.
See Figure 7.47.
Diode scale
Figure 7.47
12c. Attach the negative lead of the DMM to the
side of the diode with a band on it.
12d. Place the positive lead on the other side of
the diode.
12e. There should be continuity.
See Figure 7.48.
Figure 7.48
Continuity
Silver band
(-)
(+)
12f. Switch the leads.
12g. The meter should indicate no continuity.
See Figure 7.49.
12h. If the results do not match the above,
replace the diode.
140
No continuity
Silver band
(+)
(-)
Figure 7.49
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