WARM UP CAT) __________________________________________ (range not available) Indicates whether the ECM is allowing extra fuel into the CAT to speed warm-up. Warm-up is achieved by retarding the ignition point to AFTER TDC and enriching the mixture. WARN. SIGNAL INSTR. PANEL REFUEL _______________________ (range not available) Indicates whether the fuel level is low or not.
136 Data Parameters Diesel Engine Parameters 6.3 Diesel Engine Parameters Volkswagen Turbo Direct Injection (TDI) diesel came out in 1996. Previous ECO and Umwelt diesel engines were not electronically-controlled. The control system has more than 25 performance maps and characteristic curves for all possible performance variations based on torque, fuel consumption, and emissions. ACCELERATOR PEDAL POSITION) _________________________ (range not available) Indicates accelerator pedal position (APP. The APP sensor is one of the main inputs for determining fuel quantity. The APP sensor is a potentiometer that contains an idle switch and a kickdown switch. With failure, the engine runs at fast idle.