1E-10 Electronic control fuel injection system (Common rail type) Precautions on Service Work Use of tools for circuit test Caution: The following guidelines should be followed to prevent the damage caused by electrostatic discharge: Do not touch the ECM connector pins or the electronic components soldered on to the circuit board of the ECM. Package of that part should not be opened until the preparation of the installation of the replacement part is completed. Connect that package to the normal grounding on the machine before taking out the parts from the package.
If handling the parts with moving seats in sliding, or sitting down from the standing position, or walking for a certain distance, it is required to touch the normal grounding before the installation of the parts. If there are no special instructions according to the diagnostic procedure, test lights must not be used in the diagnosis of electric system of powertrain. Use a connector test adaptor kit 5-8840-0385-0 when a probe connector is required during the diagnostic procedure. Commercial electrical equipment Commercial electrical equipment means that commercial electrical components installed to a machine after shipment from factory.
Be careful that no special consideration for this equipment is taken in the design process of the machine. Caution: Connect commercial electrical equipment to the circuit whose power supply and ground wires are not related to the electronic control system. Commercial electrical equipment may cause malfunction of the electronic control system even if they are installed properly. They include devices which are not connected to the electrical systems on the machine, such as mobile phones or radios. Therefore, in trouble diagnosis of powertrain, first check if this commercial electrical equipment is installed, and if so, remove it from the machine.
If the trouble has not been solved after the removal, diagnose it in usual procedures. Fuel pipe 2 3 1 Welding work on the machine If performing welding on the machine, remove the battery in advance. Otherwise, the current during welding may cause system trouble or damage. Damage caused by electrostatic discharge The electronic components used in the electronic control systems are easy to get damaged, caused by electrostatic discharge because they are designed to operate in a very low voltage. Some kinds of electronic components may get damaged by electrostatic in even less than 100 V which human cannot feel.
For reference sake, the voltage of 4,000 V is needed for human to feel the flow of electrostatic discharge. There are several ways for human body to have electrostatic charged. The common way to be charged is caused by friction or induction. For example, a charging by friction is caused when a person slides on the seat of the machine. A charging by induction occurs when a person who wears well-insulated shoes stands near the high- electrified object and then he grounds instantly. The same electric charge flows out and that person is charged in the high opposite electric charge. It is important to be careful in handling or testing the electronic components because electrostatic causes damage.
5 4 TSWG0167 Name 1. Injector pipe 2. Flow damper 3. Common rail 4. Common rail pressure sensor 5. Pressure limiter Do not reuse the high-pressure pipe and injector pipe of the fuel system. Replace with new one if it is removed. Never replace the pressure limiter or flow damper alone. If faulty, replace the common rail assembly and all the fuel pipes.