Caterpillar GC20HP Lift Truck Service Manual - PDF DOWNLOAD

Page 55

STRUCTURE AND FUNCTION 3)

4)

Oxygen sensor mounted in the exhaust manifold. This sensor produces a voltage, based on the oxygen content of the exhaust stream, to indicate the current A/F. Engine temperature to indicate the fuel requirements for cold starting, general operation, and as a monitor of proper engine functional condition.

Note: These parameters can be monitored during engine operation using the diagnostic tools, as described in the troubleshooting section. INPUT (To ECU) MAP (Manifold Absolute Pressure) RPM (Engine RPM) OXY (Oxygen Sensor Voltage) ET (Engine Block Temperature)

OUTPUT (From ECU) FCSV (Fuel Control Solenoid Valve)

Note: See Wiring Schematic section for wiring locations and wire colors.

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