• 1056BA Check injector efficiency
• 1056BB Check efficiency of hot film air flow meter
• 1056BC Check on operation of engine coolant temperature sensor
• 1056BD Check operation of rpm and TDC sensor
• 1056BE Check fuel consumption
• 1056BF Check operation of accelerator pedal potentiometer
• 1056BG Check operation of butterfly casing potentiometer integrated with D.V.L.
• 1056BH Check altitude corrector efficiency