Day 34 Sheet

What is FCA, and what does it do?
FCA- fuel control actuator is an electronically controlled solenoid valve. The ECM controls the amount of fuel that enters the high-pressure pumping chambers by opening and closing the FCA based on a demanded fuel pressure. When the FCA is opened, the max amount of fuel is being supplied to the fuel injection pump. Any fuel that does not enter the injection pump is directed to the cascade overflow valve. The cascade overflow valve regulates how much excess fuel is used for lubrication of the pump and how much is returned to the fuel tank through the drain manifold. An audible click from the FCA is normal when operating the key from on to the off position.

WARNING:

HIGH-PRESSURE FUEL LINES DELIVER DIESEL FUEL UNDER EXTREME PRESSURE FROM THE INJECTION PUMP TO THE FUEL INJECTORS. THIS MAY BE AS HIGH AS 23,200 PSI (1600 BAR). USE EXTREME CAUTION WHEN INSPECTING FOR HIGH-PRESSURE FUEL LEAKS. FUEL UNDER THIS AMOUNT OF PRESSURE CAN PENETRATE SKIN CAUSING PERSONAL INJURY OR DEATH. INSPECT FOR HIGH-PRESSURE FUEL LEAKS WITH A SHEET OF CARDBOARD. WEAR SAFETY GOGGLES AND ADEQUATE PROTECTIVE CLOTHING WHEN SERVICING FUEL SYSTEM.

What is the pessure to be cautios of, in psi?
23,200 psi (1600 Bar)

Regarding the intake manifold air heater element, how many elements are on the truck? How much current is needed to operate the unit?
The air heater elements are used to heat incoming air to the intake manifold. This is done to help engine starting and improve drivability with cool/cold outside temperatures. Electrical supply for 2 air heater elements is controlled by the ECM through the 2 air heater relays. 2 heavy-duty cables connect the2 air heater elements to the 2 air heater relays. Each of these cables will supply approximately 95 amps at 12 volts to an individual heating element within the heater block assembly.

This unit is currenty in "cranks, but no start" condition. What codes are present? Does this relate to the no start?
Po201-Po206 Injectors control circuits fire improperly.
Yes.

With the Modis Scan tool, make the horn blow and wipers operate. What is this type of control called?
Bi-Directional Controls