Fuel System Safety Precautions

Note The Following When Working On The Fuel System:

WARNING:

There Is A Risk Of Injury Because The Fuel Is Under Very High Pressure.

Reduce the fuel pressure down to residual pressure before opening high pressure area of the fuel injection system.
To reduce remaining residual pressure, place clean cloth around the connector and carefully loosen connector.

-- Procedures before opening high pressure fuel injection system. Refer to RELEASING PRESSURE IN HIGH PRESSURE AREA .

To Prevent Personal Injury and Damage to the Injection and Ignition System, Observe The Following:

The ignition must be switched off before connecting or disconnecting injection and ignition system wiring or tester cables.
Wash the engine only when the ignition is turned off.
If the connectors were disconnected and the engine was started, then malfunctions have been stored in the Engine Control Module (ECM) Diagnostic Trouble Code (DTC) memory: Generate Readiness Code in Guided Functions . Refer to Vehicle Diagnostic Tester.

CAUTION:

Risk Of Damaging Electronic Components When Disconnecting The Battery.

-- Disconnect the battery. Refer to BATTERY .

WARNING:

The Injection System Is Separated Into A High-Pressure Section (Maximum Approximately 120 Bar (1740 Psi)) And A Low-Pressure Section (Approximately 6 Bar (87 Psi)).
Before Opening High Pressure Area, Fuel Pressure Must Be Reduced To A Residual Pressure Of Approximately 6 Bar (87 Psi). Refer to RELEASING PRESSURE IN HIGH PRESSURE AREA .