Different ECMs and ECM Calibrations Listed DependingDifferent ECMs and ECM Calibrations Listed Depending On PCV Valve Part Numbers - keywords calibrate catalog partech replacement reprogramming

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Bulletin 08-06-04-004 describes how to repair DTCs P1516, P2106, and P2110 that set in extremely cold temperatures by installing an updated PCV system and reprogramming the ECM with calibrations. The updated PCV system includes a new design PCV valve, part number 96942679. As a result, TIS2Web requires the user to select "New PCV (P/No. 96942679)" or "Old PCV (P/No. 96892257)" so it can install calibrations that match the PCV system.

Some 2008 Aveos come from the factory with this updated PCV system installed already.

If ECM replacement is necessary, the replacement ECM will have to match the PCV system because the ECMs come preprogrammed with calibrations that match the PCV system. As a result, the parts catalog lists two different ECMs - one with a user note that states "Together with PCV VLV (96942679)" and one without user notes.

When ECM replacement or reprogramming is necessary, inspect the PCV valve to determine whether it is a new design PCV valve or old design PCV valve. If the PCV valve looks like the one below with 3 ports, it is a new design PCV valve (96942679). If the PCV valve does not look like the one below, it is an old design PCV valve. Once this is determined, select the correct ECM or ECM calibrations using this information.

Notice: New and old design PCV valves are not readily interchangeable so it is important to determine what PCV style the vehicle is equipped with before ordering a new ECM.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.