The high-current fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
1 5A* Power brake assist module -
Hydromax
2 10A* A/C compressor clutch
3 20A* A/C clutch relay coil, Mass air
flow sensor (MAFS) with intake
air temperature (IAT), Vapor
management valve, Engine heated
exhaust gas oxygen (HEGO)
sensor #11, HEGO #21, Catalyst
monitor sensor (CMS)
4 5A* Powertrain control module (PCM)
memory
5 20A* PCM power
19 29
18 28
17 27
16 26
15 25
14 24
13
11 12
910
78
56
34
1223
22
21
20
R6
R5
R4
R3
R2
R1DIODE2
DIODE1
Roadside Emergencies
71
2012 Motorhome(mot)
Supplement, 2nd Printing
USA(fus)
