Fuel Injection System

Safety Precautions

If special testing equipment is required during road test, note the following:

Distraction and improperly secured test equipment can lead to accidents.

Risk of passenger airbag deploying in an accident.

• 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.

To reduce the risk of personal injury and/or damage to the fuel injection and ignition system, always observe the following:

• Fuel system is under high pressure! Before opening high pressure components of the fuel injection system, pressure must be relieved to residual pressure. Refer to => [ Before Opening High Pressure Fuel Injection System ] Service and Repair.

• Then wrap a clean rag around the connection and relieve residual pressure by carefully loosening the connection.

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

• It is possible that the control module will recognize a malfunction and store a DTC during some tests. Therefore, when all tests and repairs are completed, the DTC memory must be checked and, if necessary, erased. After DTC memory is erased, a readiness code must be generated for the engine control module using operating mode "Guided Functions".

• Clean engine only with the ignition switched off.

• The battery must only be disconnected and connected with the ignition is switched off, since the Engine Control Module (ECM) can otherwise be damaged.

• Observe safety precautions when disconnecting the battery.