Mounting block (VW Passat B4)

The mounting block is located behind the removable storage shelf under the instrument panel on the left (Fig. 8-31). It is used to place the fuses and main relays and to connect the wire bundles. Each relay has an identification number on the body, which does not correspond to the number on the mounting block panel, which is indicated in a rectangular frame on the diagrams. To determine the purpose of the relay, use the diagrams.

Fuses are pin type, they have different colors depending on the current strength.

Correspondence between the color and the current strength of the fuse. A: beige - 5; red - 10; blue - 15; yellow - 20; green - 30.

The location of the relays and fuses in the mounting block is shown in Fig. 8-32.

The location of the relays and fuses in the mounting block is shown in Fig. 8-32.

The following relays and fuses can be installed on the mounting block in any order: (the number on the relay housing is indicated in brackets):

relay (220) for turning on the cooling system fan after the engine stops;
relay (13) of the electromagnetic clutch of the air intake flap drive;
relay (46) pre-heating time;
relay (67) for turning on the fuel pump;
relay (79) ECU ABS brakes: relay (78) switching on the ABS brake pump;
relay (59) for switching on front seat heating elements;
automatic transmission circuit fuse;
air conditioner circuit fuse (30A);
window lift motor fuse (20A); ABS brake ECU relay fuse (30 A);
ABS pump activation relay fuse (30 A).

Diesel vehicles use a 50 A fuse to protect the spark plug circuit. It is located in the engine compartment on the front shield above the brake booster.