Kts 670

OBD: European On Board DiagnosticsWith OBD (On Board Diagnostics), a Europe-widestandard for emission values and their correct testingwas introduced.Bosch test equipment makes the perfectdiagnosis possibleÑ Standardized diagnosis interfaceÑ Standardized diagnosis protocolÑ Standardized diagnosis statementsÑ Uniform diagnostics connectorÑ Since 01.01.2001, new vehicles in Europe fitted witha gasoline engine and since autumn 2004 those with adiesel engine can only be registered if they are equippedwith the European On Board Diagnostics systemMalfunction indicator (MI)The malfunction indicator is a yellowindicator lamp with the symbol of anengine.In accordance with the OBDguideline (as of EURO 3), the indicator lamp lights up if:Ñ A fault occurs that leads to cylinder shutoff to protectthe catalytic converter (misfire detection). In this case,the lamp flashes as long as the error is present.Ñ An exhaust-gas-related fault occurs in two successivedriving cyclesÑ The engine management / transmission managementdetects a "control unit self-test" faultÑ The ignition key is in the ON position without theengine running (lamp monitoring function)Aims of OBDÑ Continuous monitoring of components relevantto emissions on all vehiclesÑ Immediate detection and display of importantemissions increases over the entire service lifeof each and every vehicleÑ Permanently low exhaust emissionsÑ Protection of vehicle components at risk(e.g. catalytic converter)Ñ Storage of information regarding faults thathave occurredÑ Transmission of stored fault information tothe KTS 115/200/530/540/570/670OBD operating dataMode 1 Exhaust-gas-related actual values, systemdiagnosis dataMode 2 Data from the engine environment(environmental conditions duringfault detection)Mode 3 Exhaust-gas-related error codes(debounced)Mode 4 Deleting exhaust-gas-related error codesMode 5 Lambda control loop circuit valuesMode 7 Non-debounced, current error codesMode 9 Identification featuresMode 6 + 8 Can be read out, contents arevehicle-manufacturer-specific21