With Analog Voltmeter

Analog Voltmeter Self-Test:

Service codes reported on an analog voltmeter are displayed as pulsing or sweeping movements of the meter's needle across its face. For example, a single digit number of "three" will be displayed by three needle pulses (sweeps). Because service codes are represented by two digit numbers, a code such as 23 will appear on a voltmeter as two needle pulses, a two second pause, then three needle pulses. If more than one code is present, there is a 4 second pause between codes.

Continuous Memory codes are separated from KOEO codes by a 6 second delay, a single half second sweep, and another 6 second delay. Continuous Memory codes are displayed in the same format as KOEO codes.

VEHICLE PREPARATION

1. Perform all safety steps required to start and run vehicle tests -- apply parking brake, place shift lever in "P" (A/T) or neutral (M/T), block drive wheels, etc.
2. Turn all electrical loads "OFF," including radio, lights, heater and A/C blower fans, etc.

USING AN ANALOG VOLTMETER

Using Analog Voltmeter:

1. Turn ignition switch "OFF."
2. Set DC voltage range to read from 0 to 15V.
3. Connect voltmeter between battery positive and Self-Test connector output pin as shown on image.
4. Install a jumper wire between Self-Test connector signal return pin and self-test input lead.
4. Connect a timing light.