Fuel injection System

Safety Precautions

If it is necessary to use testing and measuring devices on road tests, observe the following:


Distraction and improperly secured test equipment can lead to accidents.

There is a risk that the passenger airbag could deploy in a collision.

• Operating testing and measuring equipment while driving creates a distraction.

• There is an increased risk of injury due to unsecured testing and measuring equipment.

• Always secure testers on the rear seat with a strap and have a second person on the rear seat to operate them.


• Always follow the instructions when disconnecting the battery. Refer to.

Note the following when working on the fuel system:


There is a risk of injury because the fuel is under very high pressure.

• Before opening the high pressure area of the fuel injection system, fuel pressure must be relieved to residual pressure.

• To reduce the remaining residual pressure, lay a clean cloth around the connector and carefully loosen connector.

- Procedures before opening high pressure fuel injection system. Refer to => [ Before Opening High Pressure Fuel Injection System ] Service and Repair.

To prevent personal injury and damage to the injection and ignition system, observe the following:

• Individuals with a pacemaker must not stay in the danger area of high voltage systems, for example ignition systems, xenon light.

• The ignition must be switched off before connecting or disconnecting injection and ignition system wiring or tester cables.

• Fuel lines must not be opened when engine is running.

• Only clean engine with ignition switched off.

• While testing it is possible that there may be some faults stored in the engine control module. After completing all testing and repairs, check the DTC memory. If a fault has been stored: