Precautions For Multiport Fuel Injection System Or ECCS Engine

1. Before connecting or disconnecting any harness connector for multiport fuel injection system or ECM (ECCS control module):
Turn the ignition switch to the "OFF" position.
Disconnect the negative battery terminal.
Otherwise, there may be damage to ECM.
2. Before disconnecting pressurized fuel line from fuel pump to injectors, be sure to release fuel pressure.
3. Be careful not to jar components such as ECM and mass air flow sensor.