SHOP MANUAL MT26-31 - 06.2005
Engine
Tier-3 710655-
Ch 1 page 28
Throttle position sensor
A throttle position sensor need to be added to the system.
The potentiometer provides the control unit with information about
accelerator position.
The accelerator position sensor (APS) has an integrated poten-
tiometer and two microswitches for throttle activation (idle safety
switch) and full throttle (kick down switch).
The idle safety switch tells the control unit whether the accelerator
is released or activated. This is primarily a safety feature to check
that the potentiometer is working as it should.
Wiring and cable duct
1 Cylinder 1–6
2 Coolant temperature sensor
3 Engine speed sensor 1 on flywheel
4 Engine speed sensor 2 on flywheel
5 Connector to control unit
6 Charge air pressure and temperature sensor
7 Oil pressure sensor
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