Volvo Workshop Manuals
XC90 AWD V8-4.4L VIN 85 B8444S (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 4026
Checking female socket terminals and male pin terminals
Inspect terminals visually
NOTE: When checking the engine control module (ECM), do not remove the control module from the car before the main relay has interrupted the
Inspect the terminals visually when checking, or taking readings from, opened connectors.
Repair wiring and cable terminals as required, using appropriate procedures.
Check for oxidation. This can cause poor connections in the terminals
Check for damage to pins and terminals. Check that they are properly inserted into the connector. Check that the cable is properly connected to the
Using a loose male connector, test to see if the female connector provides a good contact and that the pin remains in place when the male
Shake the cable lightly and pull on connectors during measurement to locate damage.
Open-Circuit, Intermittent Faults
Open-circuit, Intermittent faults
An open-circuit in a cable will be indicated by the loss of a function (or functions).
Disconnect the connectors at both ends of the cable.
Check the cables visually according to "Inspect Terminals Visually".
Connect an ohmmeter between the ends of the cable. The ohmmeter should read approximately 0 [ohm] if there is no open-circuit in the cable.
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