VOLTAGE CHECK

(a) Establish conditions in which voltage is present at the check

point.

Example:

• [A] – Ignition SW on
• [B] – Ignition SW and SW 1 on
• [C] – Ignition SW, SW 1 and Relay on (SW 2 off)

(b) Using a voltmeter, connect the negative lead to a good ground

point or negative battery terminal, and the positive lead to the

connector or component terminal.

This check can be done with a test light instead of a voltmeter.

CONTINUITY AND RESISTANCE CHECK

(a) Disconnect the battery terminal or wire so there is no voltage

between the check points.

(b) Contact the two leads of an ohmmeter to each of the check

points.

If the circuit has diodes, reverse the two leads and check

again.

When contacting the negative lead to the diode positive side

and the positive lead to the negative side, there should be

continuity.

When contacting the two leads in reverse, there should be no

continuity.

(c) Use a volt/ohmmeter with high impedance (10 kÙ/V

minimum) for troubleshooting of the electrical circuit.