4.25
Fuel Systems
4
Exhaust Temperature Sensor
Temperature / Air Pressure Sensor (TBAP)
Crankshaft Position Sensors (CPS)
The 5 tooth crank position sensor picks up all 5 flywheel teeth.
The 2 tooth crank position sensor picks up 2 flywheel teeth.
Both crank position sensors will have a gap to the flywheel pick
up of 0.031" (0.8mm).
These sensors must be in the correct position or the engine will
not run as expected. A sheared flywheel key will cause the
engine to not start or kill if running.
The 2 tooth pick up detects the crank angle and obtains minimal
information of the crank angle when control enters into limp
home mode.
5 tooth pickup is to obtain the following information in
combination with the 2 tooth pickup.
• Judge direction of rotation (forward and backward)
• Ignition advance angle control
• Injector drive angle control
• Excess advance ignition control at reverse
• MAG / PTO cylinder detection
Sensor Specifications
Resistance Values
2.3MΩ @ 392_F (200_C) - 76Ω @
1652_F (900_C)
= T
Exhaust Temperature Sensor Torque
32 Ft.Lbs. (44 Nm)
Sensor Specifications
Pins 1 to 2 (Temperature)
59_F (15_C) = 3000Ω
68_F (20_C) = 2500Ω
77_F (25_C) = 2000Ω
Pins 1 to 4 (Pressure)
Pins 3 to 4 (Pressure)
2400 - 8200Ω
3400 - 8200Ω
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