S80 2.9 L6-2.9L VIN 94 B6294S (2000)
Short-circuit to supply voltage. Permanent faults
A short-circuit between a cable and supply voltage is often indicated by the loss of a function or a fuse blowing when voltage is passed through the
cable.
To repair wiring and cable terminals
Checks:
-
Use a voltmeter to take readings at various points in the circuit while operating switches and sensors.
Voltmeter readings will depend on which circuit is tested and the status of switches and sensors. Use the wiring diagram to determine the correct
voltage in the circuit.
Use an ohmmeter between the suspect cables to detect short-circuits between them.
The ohmmeter should read infinite resistance between cables not connected to each other in the circuit.
Check pins and terminals particularly for this fault.
Contact resistance and oxidation
To repair wiring and cable terminals
In theory, the resistance across contacts, leads and terminals should be 0 [ohm]. However, there is always some resistance due to terminal oxidation.
If this resistance becomes too great the result will be a malfunction The magnitude of the resistance before it causes a malfunction depends on the
circuit load.
Checks:
-
Check the cables visually according to Check terminals visually