2003 CADILLAC DEVILLE ignition

Relays Usage
27 Headlamp High Beam
28 Headlamp Low Beam
29 Fog Lamps
30 Daytime Running Lamps
31 Horn
32 Air Conditioner Clutch
33 Not Used
34 Accessory
35 Not Used
36 Starter 1
37 Cooling Fan 1
38 Ignition 1
39 Cooling Fan Series/Parallel
40 Cooling Fan 2
Circuit
BreakersUsage
41 Starter
The spare fuses are located in numbers 48 through 52.
The fuse puller is located in number 53.
Removing the Rear Seat Cushion
Notice:The battery and main fuse blocks are
located under the rear seat cushion. The battery's
ground terminal and some relay wires are exposed.
To help avoid damage to the battery and wires,
be careful when removing or reinstalling the seat
cushion. Do not remove covers from covered parts.
Do not store anything under the seat, as objects
could touch exposed wires and cause a short.
To remove the rear seat cushion, do the following:
1. Pull up on the front of the cushion to release the
front hooks.
2. Pull the cushion up and out toward the front of the
vehicle.
To reinstall the rear seat cushion, do the following:
5-96

Fuses Usage
10 Lamps Park Right
11 Fuel Tank Ventilation Solenoid
12 Ignition 1
13 Interior Lamp Dimmer Module
14 Sunshade
15 Navigation
16 Heated Seat Left Front
17 Interior Lamps
18 Right Rear Door Module
19 Stoplamps
20 Park/Reverse
21 Audio
22Retained Accessory Power for
Sunroof
23 Lamps, Parking Left
24 Night Vision
25 Passenger Door Module
26 Body
27 Export Lights, Power LocksFuses Usage
28 Rear HVAC Blower
29 Ignition Switch
30 Hazard Signal
31 Reverse, Locks
32Continuous Variable Road Sensing
Suspension
33 Heating, Ventilation, Air Conditioning
34 Ignition 3 Rear
35 Antilock Braking System
36 Heated Seat, Right Front
37 Heated Seat, Right Rear
38 Dimmer
60 Park Brake
61 Rear Defog
62 HVAC Blower
63 Audio Ampli®er
64 ELC Compressor/Exhaust
65 Cigar Lighter
66 Not Used
5-99

Relays Usage
39 Fuel Pump
40 Parking Lamps
41 Ignition 1
42 Park Brake A
43 Park Brake B
44 Park Shift Interlock
45 Reverse Lamps
46Retained Accessory Power for
Sunroof
47 Reverse Lockout
48 Suspension Dampers
49 Ignition 3
50 Fuel Tank Door Release
51 Interior Lamps
52 Trunk Release
53 Not Used
54 Lock, Cylinder
55 Automatic Level Control Compressor
58 Cigar Lighter
59 Rear DefogCircuit
BreakersUsage
56 Power Seats
57 Power Windows
The spare fuses and fuse puller are located in the
underhood fuse block. See ªUnderhood Fuse Blockº
listed previously under
Fuses and Circuit Breakers
on page 5-94for more information.
5-100

Ignition Transaxle Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to OFF in each shift lever position.
·The key should turn to OFF only when the shift lever
is in PARK (P).
·The key should come out only in OFF.
Parking Brake and Automatic Transaxle
Park (P) Mechanism Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.
·To check the parking brake's holding ability: With
the engine running and transaxle in NEUTRAL (N),
slowly remove foot pressure from the regular
brake pedal. Do this until the vehicle is held by the
parking brake only.
·To check the PARK (P) mechanism's holding ability:
With the engine running, shift to PARK (P). Then
release the parking brake followed by the regular
brake.
Underbody Flushing Service
At least every spring, use plain water to ¯ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-12

Horn Sounds at Lock......................................3-72
Horn............................................................... 3-7
How the System Works...................................3-26
How to Add Coolant to the Coolant Surge Tank......5-31
How to Add Fluid............................................5-23
How to Check Power Steering Fluid..................5-36
How to Check........................................5-21, 5-62
How to Reset the Transaxle Fluid Indicator.........5-23
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-14
Hydroplaning..................................................4-19
I
If No Steam Is Coming From Your Engine..........5-29
If Steam Is Coming From Your Engine...............5-28
If the Light Is Flashing.....................................3-51
If the Light Is On Steady.................................3-52
If You Are Stuck in Sand, Mud, Ice or Snow.......4-30
If You Do Decide To Pull a Trailer.....................4-35
If You're Caught in a Blizzard...........................4-27
Ignition Positions.............................................2-23
Ignition Transaxle Lock Check..........................6-12
Inadvertent Power Battery Saver.......................3-22
Infants and Young Children, Restraints...............1-32
In¯ation Ð Tire Pressure.................................5-61Inspection......................................................6-14
Brake System.............................................6-14
Engine Cooling System................................6-14
Exhaust System..........................................6-13
Fuel System...............................................6-13
Part C - Periodic Maintenance.......................6-13
Steering, Suspension and Front Drive Axle
Boot and Seal.........................................6-13
Throttle System...........................................6-14
Instrument Panel Brightness.............................3-19
Instrument Panel.............................................3-40
Cluster.......................................................3-40
Overview..................................................... 3-4
Storage Area..............................................2-51
Interior Lamps................................................3-19
J
Jump Starting.................................................5-43
K
Key in Recall Memory.....................................3-68
Key Lock Cylinders Service..............................6-10
Keyless Entry System....................................... 2-4
Keys............................................................... 2-3
8