b"7KH\x039ROYR\x03VHHPHG\x03QH\x03IRU\x03WKH\x03UVW\x03IHZ\x03GD\\V\x0f\x03EXW\x03WKH\x03DV\x03LV\x03LVVXHV\x03VORZO\\\x03 right headlamp was not working. The full scan listed 79 total faults; of the began to surface. For example, while driving at night, a Beam Malfunction15 modules on the vehicle, only one was fault free. Failure message intermittently appeared in the instrument cluster; whileMost of the faults were communication errors; many were stored in the the message was displayed, the right headlamp would stop working. TheCentralElectronicsModule(CEM)andtheCentralElectronicsModule owner had purchased and installed a new headlamp bulb, but the problemB (CEM-HS). This number of codes is not unheard of for a Volvo or any an AutomotiveTechInfo.com publication persisted. The following day, another warning message popped up in theEuropean vehicle, but they can present challenges, like where to start the display, Alarm System Service Required. diagnosis and what faults may be related to each. This message was more disconcerting than the headlamp warning becauseOne method of sorting through a plethora of faults is to break them up a no-crank, no-power condition accompanied it. The owner described itinto categories. For example, the faults on the Volvo could be divided into as the vehicle timing out. No accessories would work, including the doorfour groups: module communication, CAN/LIN networks, power supply ORFNV\x0f\x03DQG\x03KH\x03KDG\x03EHHQ\x03EULH\\\x03VWXFN\x03LQVLGH\x03WKH\x03YHKLFOH\x11\x03$IWHU\x03D\x03KHDWHG\x03SKRQH\x03 voltage, and component faults. Another method is to give the permanent call to the used car lot that sold the vehicle, it was clear they had washedfaults priority over the intermittent ones. The V50 had two permanent faults WKHLU\x03KDQGV\x03RI\x03WKH\x039ROYR\x03DQG\x03ZHUH\x03QRW\x03RHULQJ\x03DQ\\\x03KHOS\x11\x03 related to the right headlamp, and several of the module communication He continued driving the car for another week while more warning lightscodes had permanent status.appeared before bringing the wagon into the shop to be looked at. TheThe technician focused on the no-start condition and the communication service manager did his best to alleviate the owners concerns and wrote theIDXOWV\x03UVW\x11\x03+H\x03EHJDQ\x03E\\\x03UHVHDUFKLQJ\x03FRGH\x03GHVFULSWLRQV\x0f\x03WHFKQLFDO\x03VHUYLFH\x03estimate, starting with an Advanced Level Diagnostic package. This packagebulletins,andrelevantcasestudies.Threepossibilitiesemergedafter included 2.5 hours of testing and research time at a slightly reduced laborreading through the available service data: the immobilizer system, Central rate and was reserved for vehicles with multiple warning lights or electricalElectronics Module, and the A-post ground connections. So where to begin?system failures.7KHUH\x03ZHUH\x03QR\x03VSHFLF\x03IDXOWV\x03UHODWHG\x03WR\x03WKH\x03LPPRELOL]HU\x03V\\VWHP\x0f\x03VR\x03WKDW\x03The technician assigned to the Volvo did his due diligence with a completewas moved to the bottom of the list. A musty smell was noted inside the vehicle scan, visual inspection, and road test. He did not experience theVolvo, and the passenger carpet felt damp. Due to these factors, checking no-start condition on the road test, but he got the wagon to act up afterthe A-post ground connections seemed like a good starting point. PXOWLSOH\x03VWDUWLQJ\x03DWWHPSWV\x03LQ\x03WKH\x03VHUYLFH\x03ED\\\x11\x03+H\x03DOVR\x03FRQUPHG\x03WKDW\x03WKH\x03Removing the door sill covers and pulling back the front carpet sections Vehicle Diagnostic Report provedtobeagooddecision.Thedriverssideshowedsignsofwater intrusion, with rust in the footwell and corrosion buildup on the ground Scan typePre-scanRepair orderv50 terminals.Thepassengersidewasevenmoreinteresting.Therewere VHYHUDO\x03VKRS\x03UDJV\x03VWXHG\x03XQGHU\x03WKH\x03FDUSHW\x11\x03%RWK\x03WKH\x03UDJV\x03DQG\x03RRU\x03SDQ\x03ZHUH\x03Diagnosing a Volvo V50Title2006 Volvo V50EngineB5254T3 ZHW\x0f\x03EXW\x03QRW\x03ZLWK\x03ZDWHU\x11\x037KH\x03XLG\x03KDG\x03D\x03VOLSSHU\\\x0f\x03RLO\\\x03IHHO\x03OLNH\x03FRRODQW\x11\x03Pre-scan Reportwith Multiple Faults Shown Here: AlarmSystem StatusCentral Electronic Module (CEM) Fault | 16System Message Engine Control Module (ECM) Fault |8Brake Control Module (BCM) Fault | 6Volvos have long been revered for their quality, reliability, and safety. TheSRS (Supplemental Restraint System Module) Fault |8Swedish automaker has cultivated a cult-like devotion over the years, fromDrive Information Module (DIM) Fault |2the boxy wagons of the 1980s to the luxury SUVs of today. Volvos are oftenCEM-HS (Central Electronic Module B) Fault |10passed through a family, from parents to teen drivers, like hand-me-down'LHUHQWLDO\x03(OHFWURQLF\x030RGXOH\x03\x0b'(0\x0c Fault |3jeans or sneakers. They are typically good used cars unless they have beenDriver Door Module (DDM) Fault |2poorly maintainedor worse, poorly repaired.Infotainment Control Module (ICM) Fault |2Such was the case for a 2006 Volvo V50 brought into the shop. The V50Climate Control Module (CCM) Fault |10is the station wagon version of the S40 and was the successor to the V40Power Seat Module (PSM) Pass | No faultwagon starting in 2005. This V50 was a T5, indicating the turbochargedSteering Wheel Module (SWM) Fault | 4inline 5-cylinder engine, B5254T3, powered it. Integrated Audio Module (IAM) Fault | 1TheV50waspurchasedfromausedcarlotacrosstheborderinaEPS (Electrical Power Steering Module) Fault | 3neighboringstate.Noprepurchaseinspectionwasperformed,andtheAUD (Audio Module) Fault | 4wagon was sold as is with a taillight warranty; once the taillights were out2006of view, the warranty expired. Volvo V50 T5 Vehicle Diagnostic Report Driver Side A-Post25 8"