SEAL 1013741 - Caterpillar

Engines with Right-Hand Service
Illustration 1 g02213774
(1) Engine coolant temperature sensor
(2) Fuel temperature sensor
(3) Engine coolant level sensor
(4) Fuel pressure sensor
(5) Inlet air temperature sensor
(6) Inlet manifold pressure sensor
(7) Oil pressure sensor
Illustration 2 g02213775
(8) Rear turbo exhaust sensor
(9) Side turbo exhaust sensor Engines with Left-Hand Service
Illustration 3 g02213213
(1) Engine coolant temperature sensor
(2) Fuel temperature sensor
(3) Engine coolant level sensor
(4) Fuel pressure sensor
(5) Inlet air temperature sensor
(6) Inlet manifold pressure sensor
(7) Oil pressure sensor
Illustration 4 g02213775
(8) Rear turbo exhaust sensor
(9) Side turbo exhaust sensor Failure of Sensors
All Sensors
A failure of any of the sensors may be caused by one of the following malfunctions:
Sensor output is open.
Sensor output is shorted to "- battery" or "+ battery".
Measured reading of the sensor is not within the specification.Air Pressure Sensor for the Inlet Manifold
The air/fuel ratio control utilizes actual engine speed and actual boost pressure (inlet manifold air pressure) in order to control the transient smoke level. When the throttle increases and the engine demands more fuel, the fuel limit is controlled to reduce overall smoke levels of the engine exhaust.The Electronic Control Module (ECM) controls injection timing and the amount of fuel that is injected.The boost pressure reflects the difference in pressure between the inlet manifold air pressure sensor and the atmospheric pressure sensor (crankcase pressure).Failure of the Air Pressure Sensor for the Inlet Manifold
A failure of the air pressure sensor for the inlet manifold may have occurred if any of the following conditions are present:
The output of the air pressure sensor for the inlet manifold is open.
The output of the air pressure sensor for the inlet manifold is shorted to ground or to supply.
The reading of the air pressure sensor for the inlet manifold is out of the specification.The ECM will detect the failure of the air pressure sensor for the inlet manifold. The operator will be warned of the problem through the diagnostic lamp. The strategies that are related to the boost will be disabled. The failure of the air pressure sensor for the inlet manifold will not cause a shutdown of the engine or any horsepower change.Air Temperature Sensor for the Inlet Manifold
The air temperature sensor for the inlet manifold measures the inlet manifold air temperature. The Electronic Control Module (ECM) monitors the signal from the air temperature sensor for the inlet manifold. The output of