9-3 Viggen Convertible (9400) L4-2.3L Turbo (B235) HO (2001)
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Alarm Module: Testing and Inspection
Checking For Open Circuits/Short Circuits
General
Use a suitable instrument such as a multimeter.
An ohmmeter must not be used for testing components containing semi-conductors, e.g. control modules and time delay relays, etc.
The power supply to the system being resistance tested must be disconnected because the instrument will apply a low measuring current to the circuit.
This will ensure that there is no current already present in the circuit so that a reliable reading can be obtained.
Measuring voltage to check for open circuits
