Toyota Urban Cruiser 1.4 D-4D Bosch EDC17CP07 – 400403 TUN DPF EGR OFF V3 no cs.bin

Toyota Urban Cruiser 1.4 D-4D Bosch EDC17CP07 – 400403 TUN DPF EGR OFF V3 no cs.bin is a cataloged modified diesel engine-control file. Its name identifies a tuned variant with diesel particulate filter and exhaust gas recirculation functions marked as off. The Bosch EDC17CP07 controller manages diesel engine operation, including fuel injection and emissions-related functions.

What the variant labels mean

TUN indicates a tuning variant rather than a stock calibration. Engine tuning can change how the controller delivers fuel and manages torque, but the filename alone does not establish the specific map changes or the resulting power output.

DPF OFF denotes a modification intended to disable the controller functions associated with the diesel particulate filter. In normal operation, the DPF traps soot from the exhaust, and the engine controller manages regeneration to burn accumulated soot when conditions permit.

EGR OFF denotes a modification intended to disable exhaust gas recirculation. EGR normally returns a controlled amount of exhaust gas to the intake to reduce combustion temperatures and nitrogen oxide emissions. The filename describes the intended variant, not a verified list of every change in the file.

Reading the file identifier

400403 identifies this catalog entry within the named Bosch EDC17CP07 application. V3 marks it as a third labeled variant, although the name does not describe differences from earlier versions. no cs commonly means that a checksum has not been corrected. A checksum is an integrity value used to check software data, but the exact status should be verified from the file itself.

DPF and EGR modifications can affect emissions compliance and may be restricted for road use. The filename alone does not establish the vehicle’s physical exhaust configuration or the behavior of the software under all operating conditions.