The high-current fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
1 5A* Power brake assist module***
2 10A* A/C compressor clutch
3 20A* A/C clutch relay coil, Mass Air
Flow Sensor (MAFS) with IAT,
Vapor Management Valve, Engine
Heated Exhaust Gas Oxygen
(HEGO) sensor #11, HEGO #21
4 5A* Powertrain Control Module (PCM)
memory
5 20A* PCM power
6 20A* Park lamp feeds, Instrument panel
fuse #41, Warning chime module,
Trailer tow running lamp relay
coil, I/P dimmer module
7 20A* Ignition coils, Radio capacitors
8 10A* Stoplamp switch (logic): Power
brake assist module***, Speed
control module, PCM, Anti-lock
Brake System (ABS) module,
Brake shift interlock actuator
9 10A* Starter main relay coil, Starter
ground relay coil
10 20A* Daytime Running Lamps (DRL)
11 20A* Fuel pump relay coil, PCM power
12 25A* Trailer tow back-up lamps feed, IP
- backup lamp feed
13 30A** Trailer tow electric brake
controller feed
14 60A** IP battery feed (fuse #9, 15, 21)
15 20A Trailer tow park lamps
16 60A** ABS module
2008 Motorhome(mot)
Supplement
USA(fus)
Roadside Emergencies
67
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
17 20A** Horn feed
18 20A** Transmission control indicator
light, Tow/haul switch
19 — Not used
20 30A** PCM relay coil, PCM relay (PDB
fuses#3,5,7,17)
21 20A** Fuel pump motor, Fuel injectors
22 20A** Diagnostic tool connector, Cigar
lighter feed
23 40A** Blower motor feed
24 50A** IP battery feed (fuses #4, 10, 16,
22)
25 40A** Ignition switch feed (IP fuses #1,
5, 7, 11, 13, 14, 17, 19, 23; PDB
fuses #9, 11)
26 40A** Ignition switch feed (IP fuses #5,
11, 17, 23, 26, 27, 32, 38)
27 30A** Multifunction switch (headlamps)
28 30A** Starter solenoid
29 60A** Power brake assist motor***
Relay 1 — A/C clutch
Relay 2 — Fuel pump relay
Relay 3 — Horn relay
Relay 4 — Starter relay
Relay 5 — Blower motor relay
Relay 6 — PCM relay
Diode 1 — Fuel pump diode
Diode 2 — A/C clutch diode
* Mini Fuses ** Maxi Fuses ***Vehicles with Hydromax brake assist
only
2008 Motorhome(mot)
Supplement
USA(fus)
Roadside Emergencies
68
