Installation Manual

Electrical & Electronic Application And Installation Manual
Production Release Version 1.0
Page 150
11.10.2 Throttle Calibration Function
When the engine ECM is active the raw throttle signal is continuously
monitored. The following diagrams explain how the automatic calibration
functions. The adjustment screws in the diagram have been purposely
adjusted and differ from the previous throttle pedal diagram. When the engine
ECM is active the raw throttle value is checked, if the value falls within the
lower calibration region (defined by the ‘lower position limit’ & ‘Initial lower
position limit’) calibration will take place. In the diagram below the lever
position is at 11% and falls within the lower calibration area so auto calibration
will be applied.
L
o
w
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r
P
o
s
i
t
i
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n
L
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i
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Initial Lower Position
L
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D
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a
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z
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e
Diagnostic Upper Limit
U
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P
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L
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i
t
I
n
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U
p
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P
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D
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t
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L
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L
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U
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0%
100%
10%
20%
70%
85%
5%
95%
5%
5%
Pedal Rotation
S
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s
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L
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R
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Lock Screws
Pedal
Sensor
Foot Force
OUTPUT 11%
Figure 11.9 Analogue Throttle Lower Calibration Prior to Calibration
Diagram A, before calibration , the sensor output falls within the lower
calibration region, without auto calibration the ‘initial lower position limit’ is
used by the engine ECM as the throttle start point. Once clear of the