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Main fuse box, Trionic T8, 727 in the engine compartment

Main fuse box, Trionic T8, 727 in the engine compartment


Location

The main fuse box is located in front of the battery

Main task

Main fuse box for the Trionic T8. engine management system except for fuel pump relay 102, which is located in the cabin under the right-hand A-pillar.

Type

Main fuse box with relays, maxi and micro fuses.

Connection

The main fuse box is integrated in the engine harness.

Power supply, main fuse box, Trionic T8

Fuses

No. Amp Type Function Illus.
1 -- -- --
2 20 +30 Via relay 443: preheating, oxygen sensors (271) Via relay 102: Fuel pump (323)
3 10 +30 A/C compressor (170)
4 30 +30 Via relay 229: Trionic T8, switch A (589A) charge air solenoid valve (179a) mass air flow sensor (205) injectors (206) ignition coils (320) EVAP canister purge valve (321) EVAP shut-off control valve (588) measurement unit (740)


Relays

Location No. Description Illus. Diagram
2 156 A/C compressor relay,
3 443 Heated oxygen sensor relay,
4 229 Engine control system main relay J45 J37