Actron CP9575 Instructions d'exploitation télécharger pdf (Page 10)

O2 Monitor Test

OBD II regulations require applicable vehicles monitor and test oxygen

(O2) sensors to determine problems related to fuel and emissions. The

O2 Monitor Test allows retrieval of completed O2 sensors monitor

test results.

9 The O2 Monitor Test is not an on-demand test. O2 sensors

are not tested when selected via the menu. O2 sensors are

testedwhenengineoperatingconditionsarewithinspecied

limits.

9 If the vehicle communicates using a controller area network

(CAN), O2 Monitor tests are not supported by the vehicle. A

message is displayed. See Diagnostic Monitor Test to see

O2 monitor data.

O2 sensors are located before (upstream) and after (downstream)

catalyst(s). Sensors are named (xy) for their position to both cylinder

banks and catalysts.

 TheO2sensorforcylinderbank1hasprex1y while O2

sensorforcylinderbank2hasprex2y.

 The O2 sensor upstream of catalyst (closest to engine) has

sufxx1whileO2sensordownstreamofcatalysthassufx

x2. If vehicle contains more catalysts, O2 sensor downstream

ofsecondcatalysthassufxx3 and O2 sensor downstream

ofnextcatalysthassufxx4.

 For example, O2S21 is upstream O2 sensor for cylinder bank

Diagnostic Monitor Test

The Diagnostic Monitor Test function is useful after servicing or after

erasing a vehicle’s memory. Test results do not necessarily indicate a

faulty component or system.

Non-CAN vehicles Diagnostic Monitor Test receives test results for

emission-related powertrain components and systems that are not

continuously monitored.

CAN vehicles Diagnostic Monitor Test receives test results for

emission-related powertrain components and systems that are and

are not continuously monitored.

VehiclemanufacturerisresponsibleforassigningtestandcomponentIDs.

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Actron CP9575 Instructions d'exploitation Page 10