Fine-Tuning Mode - Bosch ETT 008.31 Repair Instructions

4.4 Fine-tuning mode (switch S 60 at position 2, upper-range values, activation of temperature compensation and setting
appropriate version for country of use)
Procedure
Press button Press simultaneously
Select 1 x - - - -
Enter o
With the "Enter o" and "Test u" buttons, the current setting value can now be changed until the current
measured value matches the test-gas concentration.
Select 2 x - - - -
Enter o
With the "Enter o" and "Test u" buttons, the current setting value can now be changed until the current
measured value matches the test-gas concentration.
Select 3 x - - - -
Enter o
With the "Enter o" and "Test u" buttons, the current setting value can now be changed until the current
measured value matches the test-gas concentration.
Select 4 x - - - -
Enter o
When the entry is set to "YE5
Select 5 x - - - -
Enter o
For setting see Section 6.7
20
Display
Current measured
value in display
window
HC
HC
CO
CO
C0
2
CO
2
HC + CO + CO
HC + CO + CO
YE5 YE5 YE5 YE5
Engine speed
Engine speed
Current setting value
in engine-speed
window
x x x x
x x x x
x x x x
x x x x
x x x x
x x x x
x x x x
2
x x x x
2
tb.Ei tb.Ei tb.Ei tb.Ei tb.Ei", temperature compensation is activated.
U 13 U U 13 U
U 13 U U 13 U U 13 U
U 13 U U 13 U U 13 U
U 13 U U 13 U
Function symbol in
temperature dislpay window
E.An E.An E.An E.An E.An
E.Ei E.Ei
E.Ei E.Ei E.Ei
E.An E.An E.An E.An E.An
E.Ei E.Ei
E.Ei E.Ei E.Ei
E.An E.An E.An E.An E.An
E.Ei E.Ei
E.Ei E.Ei E.Ei
tb.An tb.An tb.An tb.An tb.An
tb.Ei tb.Ei
tb.Ei tb.Ei tb.Ei
tY.An tY.An
tY.An tY.An tY.An
tY.Ei tY.Ei tY.Ei
tY.Ei tY.Ei