With Analog Voltmeter

Reading Codes Using Analog Voltmeter:

- When a service code is reported on the analog voltmeter, it will represent itself as a pulsing or sweeping movement of the voltmeter needle across the dial face of the voltmeter.

- A single digit number of three will be reported by three needle pulses (sweeps). A service code is sometimes represented by a two digit number, such as 23. As a result, the self test service code of 23 will appear on the voltmeter as two needle pulses (sweeps), then after a 1.6 second pause the needle will pulse (sweep) three times.

- The continuous memory codes are not separated from the Key-On Engine Off codes. They are produced on the voltmeter in the same manner as the Key On Engine Off (KOEO) codes.