GM Service Manual Online
For 1990-2009 cars only
Table 1: Underhood Fuse Block (UHFB) Minifuses/J-Case Fuses
Table 2: Underhood Fuse Block (UHFB) Relays
Table 3: Instrument Panel Fuse Block Minifuses

The wiring circuits in your vehicle are protected from short circuits by a combination of fuses. This greatly reduces the chance of fires caused by electrical problems.

There are two fuse blocks in your Saturn vehicle -- the "underhood fuse block" and the "instrument panel fuse block." These fuse blocks are used to identify and check fuses and relays.

Instrument Panel Fuse Block


Object Number: 1225910  Size: B3

The instrument panel fuse block is located near the driver's side right leg. To remove the fuse panel cover and access the fuses and relays, loosen the screw on the cover and remove the cover.


Object Number: 1225915  Size: B3

Refer to the Fuse and Relay Usage Chart on the inside of the fuse panel cover to identify the fuses and relays.

Underhood Fuse Block


Object Number: 1532952  Size: B3

The underhood fuse block is located in the rear right portion of the engine compartment. To identify and check fuses and relays, refer to the Fuse and relay Usage Chart.

Check the fuse by looking at the silver colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure you replace a bad fuse with a new one of the same amperage. Always reinstall the fuse block cover after use.

The following chart lists the minifuses, located in the underhood fuse block, and the system they control.

Note: A label is provided on the fuse block cover for fuse layout.

Underhood Fuse Block (UHFB) Minifuses/J-Case Fuses

Fuse

Color (AMP)

System

ABS Fuse 22

Yellow (20)

ABS/Traction Control Module

ABS Fuse 40

J-Case (40)

ABS/Traction Control Module

ABS Fuse 8

Red (10)

ABS/Traction Control Module

A/C Fuse 5

Red (10)

A/C Clutch Relay

Back-Up Fuse 15

Red (10)

PRNDIL, Back-Up Switch

COOLING FAN Fuse 45

J-Case (30)

Cooling Fan Relay Mini-Relay

CRANK Fuse 46

J-Case (30)

PCM Cont (CRANK) Mini-Relay

ECM Fuse 9

Red (10)

Engine Control Module

ECM/TCM Fuse 1

Red (10)

Engine Control Module, Transmission Control Module

EPS 1 Fuse 43

J-Case (30)

Electrical Power Steering

EPS 2 Fuse 42

J-Case (30)

Electrical Power Steering

ERLS Fuse 10

Red (10)

Can. Purge Solenoid, Can. Vent Solenoid, Low Coolant SW, Oxygen Sensors

FOG Fuse 17

Red (10)

Fog Lamp Micro-Relay

HDLP - LH Fuse 18

Blue (15)

Left Headlamp

HDLP - LH Fuse 4

Blue (15)

Right Head Lamp

HORN Fuse 20

Red (10)

Horn Micro-Relay

IGN Fuse 11

Red (10)

ELC. IGN Control Module, Charging System Neutral Stop Back-Up Switch

INJECTORS Fuse 16

Red (10)

Fuel Injector (Cyl. 1, 2, 3, 4)

IP BATT1 Fuse 39

J-Case (30)

Body Control Module

IP BATT1A Fuse 47

J-Case (30)

Body Control Module

IP BATT2 Fuse 41

J-Case (40)

Body Control Module

PREM AUDIO Fuse 21

Yellow (20)

Entertainment, Prem. Radio Amplifier

RR DEFOG Fuse 23

Green (30)

Rear Defog Mini-Relay

RUN (IGN 3) Fuse 48

J-Case (30)

Body Control Module

RUN/CRANK Fuse 38

J-Case (30)

IGN 1 Mini-Relay

TRANS1 Fuse 14 Up

Red (10)

Transmission Control Module, Neutral Stop Back-

TRANS2 Fuse 13

Red (10)

Transmission (VTi Variable Transmission Only)

WIPER Fuse 19

Natural (25)

Wiper Mini-Relay

The following chart lists the relays, located in the underhood fuse block, and the system they control.

Note: A label is provided on the fuse block cover for relay layout.

Underhood Fuse Block (UHFB) Relays

RELAY

TYPE

SYSTEM

A/C Relay 24

Micro Relay

A/C Clutch

COOLING FAN Relay 30

Mini Relay

Engine Cooling Fan

FOG LAMP Relay 26

Micro Relay

Fog Lamps

HORN Relay 25

Micro Relay

Horn

RUN/CRANK Relay 28

Mini Relay

Body Control Module

PCM CONT Relay 31

Mini Relay

ECM

REAR DEFOG Relay 34

Mini Relay

Rear Defog

Wiper2 Relay 33

Mini Relay

Wiper System

Wiper1 Relay 32

Mini Relay

Wiper System

MISCELLANEOUS DEVICES (UHFB)

WIPER Diode 37

UHFB

Wiper Diode

A/C Diode 35

UHFB

AC Diode

FUSE PULLER 49

  

The following chart lists the minifuses, located in the instrument fuse block, and the system they control.

Note: A label is provided on the fuse block cover for fuse layout.

Instrument Panel Fuse Block Minifuses

Fuse

Color (AMP)

System

AIR BAG

Red (10)

Air Bags, Sensing and Diagnostic Module (SDM)

ACCOMMODATION INTERFACE/ONSTAR®

Red (10)

Entertainment, Mobile Communications, OnStar®

CRUISE

Brown (7.5)

Cruise Control Module, Clutch Start Switch

EPS/CRUISE

Gray (2)

Cruise Control Switch, EPS Unit

FUEL PUMP

Blue (15)

Fuel Pump Relay

HVAC

Brown (7.5)

Climate Control

CLUSTER

Brown (7.5)

Instrument Panel Cluster

LIGHTER

Blue (15)

Cigar Lighter

RADIO (BATT1)

Red (10)

Radio Receiver, Entertainment Memory

RADIO (ACC)

Red (10)

Radio Receiver, Entertainment

SUNROOF

Blue (15)

Power Sunroof, OnStar® Mirror

WIPER SW

Red (10)

Windshield Wiper and Washer, Transmission Shift Interlock Switch

DASH

Brown (7.5)

Instrument Panel, Dimming Switch

IGN SW

Gray (2)

Ignition Switch

PARK

Blue (15)

Headlamp Switch

PWR OUTLET

Blue (15)

Auxiliary Power Outlet

PWR WINDOWS

J-Case (30)

Power Window Switches

STOP

Blue (15)

Stoplamp (Brake) Switch

BCM ELECT

Brown (7.5)

Ignition Switch, Body Control Module (BCM)

BCM (PWR)

Blue (15)

Entry Control, Trunk Release

The following chart lists the relays, located in the instrument panel fuse block, and the system they control.

Note: A label is provided on the fuse block access panel for relay layout.

RELAY/MODULE

SYSTEM

RUN

Climate Control (HVAC Blower, Control Heads)

ACC

Power Windows, Sunroof, Radio, Wiper/Washer Switch, Auxiliary Power Outlet

FUEL PUMP

Fuel Pump

ALC/PARK

OnStar®, Radio, Instrument Panel Cluster, Body Control Module (Entry Control), Cigar Lighter, Headlamp Switch, License Lamp