PIN-DOWEL 4L3395 - Caterpillar

The GSC+ monitors the following engine sensors:
Engine oil pressure sensor
Engine coolant temperature sensor
Engine coolant level sensor
Engine oil temperature sensor
Engine speed sensorNote: The engine coolant level sensor and the engine oil temperature sensor are optional.Engine Oil Pressure Sensor
Illustration 1 g00311286
Engine Oil Pressure SensorThe engine oil pressure sensor is an input of the GSC+. The sensor tells the GSC+ the current engine oil pressure. The GSC+ shows the engine oil pressure on the lower display and the GSC+ also uses the sensor information to determine when a low engine oil pressure fault exists. The engine oil pressure sensor is mounted on the outside of one of the engine oil galleries. The engine model determines the exact location of the engine oil pressure sensor.The engine oil pressure sensor is a pulse width modulated sensor. This sensor continuously generates a PWM signal. The duty cycle of the PWM signal varies from 10 to 90%. The duty cycle varies proportionally to the oil pressure of the engine. The GSC+ receives the PWM signal. The GSC+ measures the duty cycle in order to determine the oil pressure of the engine. The base frequency of the signal is constant at 500 150 Hz. The signal wire (connector contact "C") of the oil pressure sensor connects to connector contact "8" of the GSC+. The sensor is supplied operating power (8 DCV) at connector contact "A" from the GSC+ (connector contact "9").There are five setpoints that are related to engine oil pressure. The setpoints that are programmed into the GSC+ are listed below.
P003
P004
P012
P013
P014See Systems Operation, "Engine Generator Programming OP5-0".Engine Coolant Temperature Sensor
Illustration 2 g00311256
Engine Coolant Temperature SensorThe engine coolant temperature sensor is an input of the GSC+. The engine coolant temperature sensor tells the GSC+ the engine coolant temperature. The GSC+ shows the engine coolant temperature on the lower display. The GSC+ uses the sensor information in order to determine when a high coolant temperature fault exists or a low coolant temperature fault exists. The engine coolant temperature sensor is mounted in the water jacket which is usually toward the front of the engine. The exact location depends on the engine model.The engine coolant temperature sensor is a pulse width modulated type of sensor (PWM). This sensor continuously generates a PWM signal. The PWM duty cycle varies from 10% to 95%. This variation is in a proportion with the engine coolant temperature. The GSC+ receives the PWM signal. Then, the GSC+ measures the duty cycle in order to determine the coolant temperature of the engine. The base frequency of the signal is constant at 455 Hz (370 to 550 Hz). The signal wire (connector contact "C") of the coolant temperature sensor connects to connector contact "7" of the GSC+. The sensor is supplied operating power (8 DCV) at connector contact "A" from the GSC+ (connector contact "9").There are four setpoints that are related to engine coolant temperature. These points are programmed into the GSC+. The related setpoints are listed below.
P003
P004
P015
P016See Systems Operation, "Engine/Generator Programming OP5-0".Engine Oil Temperature Sensor
Illustration