During the bench test, use a stabilised power supply unit (Vcc = 5 ± 0.3 V)

 

STEP

 

CHECK TO BE CARRIED OUT

 

REMEDIAL ACTION IF THE CHECK IS NOT OK

 

1

 

Check using diagnosis equipment

Connect the diagnosis equipment to the Powertrain Control Module and check that the signal for track 1 in rest position is between 900 and 1100 mV

 

Check/Restore the correct wiring connections.

If the value remains out of range go to Step 5.

 

2

 

Check using diagnosis equipment

Keeping the diagnosis equipment connected to the Powertrain Control Module, check that the signal for track 2 in rest position is between 350 and 650 mV.

 

Check/Restore the correct wiring connections.

If the value remains out of range go to Step 5.

 

3

 

Check using diagnosis equipment

Keeping the diagnosis equipment connected, check that the track 1 and track 2 signals in rest position are consistent with each other, calculating the interlinearity and checking that the values are acceptable as indicated in Figure 1 (max = 1.4% Vcc).

 

Check/Restore the correct wiring connections.

If there is no correlation between track 1 and track 2 go to Step 5.

 

4

 

Check using diagnosis equipment

Connect the diagnosis equipment and check that the track 1 and track 2 signals in end of travel position are consistent with each other, calculating the interlinearity and checking that the values are acceptable as indicated in Figure 1 (max 1 = 1.4% Vcc).

End of diagnosis

 

Check/Restore the correct wiring connections.

If there is no correlation between track 1 and track 2 go to Step 5.

 

5

 

Check the operation of the accelerator pedal

Keeping the diagnosis equipment connected, check that the accelerator pedal is operating correctly.

 

Accelerator pedal not operating correctly, replace it.

   Op. 1068A20 ACCELERATOR PEDAL WITH BUILT-IN POTENTIOMETER - R.R

Figure 1 - INTERLINEARITY (any pedal position)


1. Formula (u1= track 1 signal, u2= track 2 signal)

2. Max. value

PIN OUT


 

PIN

 

SIGNAL

 

1

 

Track 2 supply

 

2

 

Track 1 supply

 

3

 

Track 1 signal

 

4

 

Track 1 GND

 

5

 

Track 2 GND

 

6

 

Track 2 signal