Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Voltage Check

Meter Types:





1. Use a digital or analog multimeter with a minimum 10k ohm resistance.

Voltage Check:





2. Establish conditions in which voltage should be present at the check point.

EXAMPLE:
a) Ignition SW ON
b) Ignition SW and SW 1 ON
c) Ignition SW, SW1 and Relay ON (SW 2 OFF)

3. Set the volt meter set to the appropriate range for the circuit being tested.
4. Connect the negative lead to a good ground point or the negative battery terminal, and connect the positive lead to the connector or component terminal.

NOTE: This test can be done with a test light if the circuit does not include sensitive electrical components, i.e. electrical control units.