Measuring continuity/resistance

Z-GI-15prose procedure

Checking switches

Touch the ohmmeter probes to the switch terminals to check continuity.

CAUTION

Verify the operating state of the switch before checking continuity because readings vary accordingly.

Checking diodes

Continuity is checked according to the direction of the positive (+) and negative (-) probes of the ohmmeter in the circuit containing the diode.

NOTE

The negative (-) probe of the ohmmeter is connected to the positive terminal of the internal ohmmeter battery, the positive (+) probe to the negative terminal of the battery.

Diode continuity check

Connection	Continuity
Ohmmeter connected across diode in forward direction	Yes
Ohmmeter connected across diode in reverse direction	No

Ohmmeter connected across diode in forward direction

ContinuityYes

Ohmmeter connected across diode in reverse direction

ContinuityNo

Checking sensors and solenoid valves

Connect the ohmmeter probes to the sensor or solenoid valve terminals to check resistance.

CAUTION

Verify the operating state of the sensor before checking resistance because readings vary accordingly.

Checking condensers

1
Short between the terminals with a jumper wire to discharge the capacitor.
2
Set the ohmmeter range to x 10kΩ and connect it to the capacitor terminals.
3
The capacitor is good if the needle of the ohmmeter swings once and returns to its original position.

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