Volvo Workshop Manuals
XC90 AWD L5-2.5L Turbo VIN 59 B5254T2 (2005)
Sensors and Switches > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Oxygen Sensor > Component Information > Diagrams > Diagram Information and Instructions > Page 3742
Check the cables visually according to "Inspect Terminals Visually". Use a voltmeter to take readings at various points in the circuit while
Loose Connections (Terminals)
Repair wiring and cable terminals, using appropriate procedures.
Loose connections in terminals may be caused by oxidation of the pins and sockets, or by a faulty connection of a cable to its cable terminal.
Inspect terminals visually according to "Inspect Terminals Visually". Continue according to "Contact Resistance and Oxidation".
Contact Resistance and Oxidation
In theory, the resistance across contacts, leads and terminals should be 0 [ohm]. However, there is always some resistance due to terminal oxidation.
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