Fuel Charging Wiring

The fuel charging wiring (9D930) connects the engine control sensor wiring (12A581) to each fuel injector (9F593) and other electronic engine controls such as throttle position sensor (TP sensor) (9B989) and idle air control valve (IAC valve) (9F715). The fuel charging wiring receives signals from the powertrain control module (PCM) (12A650) and transfers the signals to the fuel injectors. The signals from the powertrain control module determine the fuel injection sequence and duration each fuel injector will stay open to allow fuel into the combustion chambers.

Inertia Fuel Shutoff (IFS) Switch

The inertia fuel shutoff switch (IFS switch) (9341) is used in conjunction with an electric fuel pump (9350). The purpose of the inertia fuel shutoff switch is to shut off the fuel pump in the event of a collision. It consists of a steel ball held in place by a magnet. When a sharp impact occurs, the ball breaks loose from the magnet, rolls up a ramp and strikes a target plate which opens the electrical contacts of the inertia fuel shutoff switch and shuts off the fuel pump. Once the inertia fuel shutoff switch is open, it must be manually reset before the vehicle can be restarted.

The inertia fuel shutoff switch is located behind the right cowl side trim panel (02344) in the passenger compartment.

Item	Part Number	Description
1	9341	Inertia Fuel Shutoff Switch
2	—	Target Plate (Part of 9341)
3	—	Ball (Part of 9341)
4	—	Magnet (Part of 9341)
5	—	Switch Terminals (Part of 9341)
6	—	Electrical Contacts (Part of 9341)
7	—	Reset Button — Position with Switch Open — Fuel Pump Off (Part of 9341)
8	—	Reset Button — Position with Switch Closed — Fuel Pump On (Part of 9341)

Fuel Pump Relay

The fuel pump relay supplies power to the fuel pump when the powertrain control module grounds the relay during START and engine RUN conditions. It is located in the power network box in the engine compartment.