Nissan Patrol, Ford Maverick

1988-1997 of release

Repair and car operation

Procedures of service of systems of injection of fuel and engine management and precautionary measure

In a secondary contour of electronic system of ignition the dangerous high voltage can be developed. For this reason at work with components of system of ignition or near them it is necessary to observe special precautionary measures.

Do not start the engine if are not sure of purity and reliability of fastening of tips of wires on battery plugs.

Do not use for car start the charger.

Before disconnecting from the wire battery (or to connect them) do not forget to switch off ignition (a key in the situation OFF).

Before the beginning of service of components of a control system of the engine surely disconnect a negative wire from the battery.

Before the beginning of welding works surely disconnect wires from the battery, also do not forget to disunite the electric socket of the control unit (ECU).

Do not allow ECU warming up above than to 80 ° Page.

Watch purity and reliability of fastening of all electric connections.

Before disconnecting any of components of a control system of the engine surely disconnect ignition (OFF).

Before removal of components of a submitting path of a power supply system surely dump pressure in system. Remember that the system is under pressure constantly (even at the switched-off engine).

Do not allow hit or a water stream during engine cleaning on components of a control system of the engine.

At the address with all components of a control system of the engine, in particular with a lambda probe, be careful.

Do not undertake attempts of dismantling of electronic components. In case of an exit them out of operation make replacement with blocks.

Do not submit tension of the battery directly on fuel injectors.

Use of the diagnostic equipment

Universal measuring instrument of parameters of electric chains (multimeter)

At check of tension or resistance of chains use only a digital multimeter with an impedance not less than 10 megohms.

All measurements should be made with the connected electric sockets of components if the return is not stipulated especially in instructions on check performance. Thus measuring щуп the device it is entered into the socket from its reverse side. If щупы are not rather thin, they can be improved by an attachment way by the end of a piece of a wire, rather thin not to damage the corresponding socket. Take care of reliable electric and mechanical contact of a wire with the shchupy.

If for check performance from the socket the pressurizing cap or a protective casing acted in film, do not forget then to establish it into place.

Lamp sampler

Apply lamps samplers only where it is stipulated by instructions. In order to avoid failure of electronic components use only lamps samplers in capacity no more than 3.6 W.

For check of capacity of a lamp use the exact ampermeter (for example a digital multimeter) - at inclusion of a measuring instrument consistently with a lamp and at supply voltage 12 In the indication should not exceed 0.3 And (300 мА).

If the suitable lamp sampler near at hand does not appear, make it of a light-emitting diode.

When using as an alarm element of a lamp sampler of a light-emitting diode remember that the last by definition passes a current only in one direction. Those measuring щуп lamps it should be connected to a positive side of a probed component.

Preliminary checks

Before starting search of causes of failure in actually control system of the engine execute listed below check.

PERFORMANCE ORDER

Check availability of fuel in a fuel tank. Check a condition and reliability of contacts of all electric sockets and plugs of grounding of components of a control system of the engine. Check a battery condition. Execute necessary corrections. Check a condition of a filtering element of an air purifier. In case of need make replacement. Check pressure of fuel. Check serviceability of a mechanical condition of the engine and correctness of its settings. Check a condition and reliability of fastening of all vacuum hoses. Make sure of absence of leakages of air/losses of depression via the inlet pipeline, the case of a throttle and the delivery chamber of an air path. Check serviceability of functioning of system of operated ventilation of a case (PCV). Check level of cooling liquid and make sure that the engine is heated-up to normal working temperature.