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Home >> Lexus >> 1997 >> LX 450 L6-4.5L (1FZ-FE) >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Ignition Control Module >> Diagrams >> Diagnostic Aids >> Continuity and Resistance Check
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Continuity and Resistance Check

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/Ohm meter with high impedance (10 K Ohms/V minimum) for troubleshooting of the electrical circuit.