2003-2004 Saturn ION Fuse Box Diagram | Engine Bay

(Last Updated On: June 15, 2017)

2003-2004 Saturn ION Fuse Box Diagram located under the hood in the engine bay on the drivers side.

2003-2004 Saturn Ion Fuse Box Diagram Engine Compartment

Fuses Usage
1 ECM Engine Control Module
4 RH HDLP Passenger’s Side Headlamp
5 A/C  Air Conditioning Clutch Relay
8 ABS Anti-lock Brake System
9 ECM/ETC Engine Control Module
10 EMISS Canister Purge Solenoid, Mass Air Flow Sensor, Low Coolant Switch, Oxygen Sensors
11 IGN Ignition Coils (1,2,3,4)
13 ECM Engine Control Module
14 BOOST Engine Boost Solenoid
15 BACK-UP Back-up Switch
16 INJECTORS Fuel Injectors (Cylinder 1, 2, 3, 4)
18 LH HDLP Driver’s Side Headlamp
19 WIPER Wiper Mini Relay
20 HORN Horn Micro Relay
21 RADIO Radio
22 ABS Anti-lock Brake System
23 RR DEFOG Rear Defog Mini Relay
38 RUN/CRANK Ignition 1 Mini Relay
39 IP BATT1 Body Control Module
40 ABS Anti-lock Brake System
41 IP BATT2 Body Control Module
43 EPS Electric Power Steering
44 COOLING FAN 2 Cooling Fan Mini Relay
45 COOLING FAN 1 Cooling Fan Mini Relay
46 CRANK Crank
47 IP BATT 1A Body Control Module
48 RUN (IGN 3) Body Control Module

 

Relays Usage
24 A/C CLUTCH Air Conditioning Clutch
25 HORN Horn
27 AFTER COOLER PUMP After Cooler Pump
28 RUN/CRANK Body Control Module
29 POWERTRAIN Powertrain
30 COOLING FAN 1 Engine Cooling Fan
31 ECM CONT Starter Solenoid
32 WIPER1 Wiper System
33 WIPER2 Wiper System
34 REAR DEFOG Rear Window Defogger

 

Diodes Usage
35 A/C Air Conditioning Diode
37 WIPER Wiper Diode