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ENGINE ELECTRICAL – Charging System 16-10 EXAMPLES OF ABNORMAL WAVEFORMS NOTE The size of the waveform patterns differs largely, depending on the adjustment of the variable knob 2. Identification of abnormal waveforms is easier when there is a large output current (regulator is not 3. Check the conditions of the charging warning lamp (illuminated/not illuminated). Also, check the charging Abnormal waveforms Problem Abnormal waveforms Problem cause Example 1 Open diode Example 4 Short in stator Example 2 Short in diode Example 5 Open Example 3 Broken wire At this time, the charging warning lamp ALTERNATOR RELAY CONTINUITY CHECK 1. Remove the alternator relay from the relay box inside 2. Set the analogue-type circuit tester to the Ω range and check that there is continuity when the (+) terminal of 3. Next, check that there is no continuity when the (+) terminal 4. If the continuity checks in steps 2 and 3 show a defect, 1 2 3 4 Alternator |