Actron AutoTroubleShooter CP7677 - Manual (Page 10)

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working on printed circuit boards.
• Cut wire if there is no other pos-
sible way to open electrical circuit.
4. Connect RED test lead to one side
of disconnected circuit.
5. Connect BLACK test lead to re-
maining side of disconnected cir-
cuit.
6. Turn multimeter rotary switch to
10A DC position, or 200mA posi-
tion.
7. View reading on display.
If minus (-) sign appears on display,
then reverse RED and BLACK test
leads.
Testing for Continuity
Continuity is a quick way to do a resis-
tance test to determine if a circuit is
open or closed. The multimeter will beep
when the circuit is closed or shorted, so
you don’t have to look at the display.
Continuity checks are usually done when
checking for blown fuses, switch opera-
tion, and open or shorted wires.
To measure Continuity (see Fig. 12):
Fig. 12
Black
Red
Fig. 10
Black
Red
Electrical
Device
DC
Voltage
Source
Fig. 11
Black
Red
Electrical
Device
DC
Voltage
Source
1. Insert BLACK test lead into COM
test lead jack.
2. I n s e r t R E D t e s t l e a d i n t o
test lead jack.
3. Turn multimeter rotary switch to
function.
4. Touch RED and BLACK test leads
together to test continuity.
Listen for tone to verify proper op-
eration.
5. Connect RED and BLACK test
leads across component where
you want to check for continuity.
Listen for tone:
• If you hear tone – Circuit is closed
or shorted.
• If you don’t hear tone – Circuit is
open.