Fuel Pump - Electrical Testing: Operation: Td4: General

Feed from the positive battery terminal (C0192) is supplied to fusible link 3, fuse 10, and the main relay (C0632) on an R wire. All are located in the engine compartment fuse box.

Operation of the main relay (C0576) is controlled by the Engine Control Module (ECM) (C0603) on a WK wire. For more information on main relay operation, refer to ENGINE MANAGEMENT SYSTEM of the System Description and Operation Workshop manual.

Fuse 10 (C0575) provides a constant battery feed to the inertia switch (C0123) on a G wire.

Fusible link 3 (C0571) provides a constant battery feed to the ignition switch (C0028) on an N wire. When the ignition switch is turned to the 'ignition' position, current flows across the switch (C0028) to fuse 22 of the passenger compartment fuse box (C0588) on a G wire.

Fuse 22 (C0580) provides an ignition feed to the ECM (C0603) on a W wire.