17B-32V7 MR-413-X44-17B000$080.mif
17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
Defect modes
Motorised throttle valve
In defect mode, the motorised throttle valve can assume six different statuses.
ET564 Defect mode type 1
This type groups together the faults that prevent the throttle from being controlled.
It causes the throttle control to be stopped: the throttle is in its safe position. By depressing the pedal, it is possible
to modulate the torque by cylinder cut-off and advance in order to keep the vehicle running.
The ESP, cruise control/speed limiter and automatic/sequential gearbox systems change to "defect mode". This
defect mode is always accompanied by the Type 2 defect mode.
ET565 Defect mode type 2
This type groups together the faults preventing the system from controlling the air flow modulation.
The associated defect mode limits engine speed by cutting off the injection (limiting engine speed to 2400 rpm at idle
speed and to 3500 rpm in other gears).
ET566 Defect mode type 3
This type groups together faults allowing you to deduce that the system has lost the accelerator pedal signal, but still
controls the air flow modulation (motorised throttle servo operational). Defect mode is associated with a constant
pedal setpoint for each gear ratio. The vehicle speed can vary by changing gear.
Suggested speeds on a flat road:
–12 mph (20 km/h) max in 1 - st,
–21 mph (35 km/h) max in 2 - nd,
–27 mph (45 km/h) max in 3 - rd,
–39 mph (65 km/h) max in 4 - th,
–below 54 mph (90 km/h) in 5 - th and 6 - th.
ET567 Defect mode type 4
This type covers faults that affect the motorised throttle valve monitoring system, the pedal and the turbocharging
circuit (for D4FT 780) or for faults for which there is a viable safety operating mode for the system.
The associated defect mode is a limitation of the throttle opening according to the engine speed. This results in the
speed being limited to below 66 mph (110 km/h) in 5 - th and 6 - th gear and giving the impression of a "soft"
accelerator pedal.Note:
This defect mode is an effect which occurs due to a fault, but does not necessarily originate from the throttle valve
itself.
PETROL INJECTION
Fault finding – Defect modes
