Fuel injection System

Safety Precautions

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

CAUTION!
• Test and measuring equipment must always be secured to the rear seat and be operated from there by a second person.

• If the vehicle is involved in a collision while testing and measuring equipment is operated from the front passenger seat, the person sitting in that seat could be seriously injured when the airbag deploys.

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

CAUTION!
• 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 engine 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.

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

• Observe safety precautions when disconnecting the battery.