Reading Codes-Analog Voltmeter

Fig. 14 Reading codes with analog voltmeter:

When a service code is reported on the analog voltmeter for a function test, it will represent itself as a pulsing or sweeping movement of the voltmeter's needle across the dial face of the voltmeter, Fig. 14. Therefore, a single-digit number of three will be reported by three needle pulses (sweeps). However as previously stated, a service code is represented by a two digit number, such as 2-3. As a result, the Self-Test service code of 2-3 will appear on the voltmeter as two needle pulses (sweeps), then, after a two second pause, the needle will pulse (sweep) three times.