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Fuse box diagram (fuse layout), location, and assignment of fuses and relays Mercury Grand Marquis (1998, 1999, 2000, 2001, 2002).
Checking and Replacing Fuses
Fuses and circuit breakers protect your vehicle’s electrical system from overloading. If electrical components in the vehicle are not working, the system may have been overloaded and blown a fuse or tripped a circuit breaker. Check the appropriate fuses before replacing any electrical components. A blown fuse can be identified by a break in the wire within the fuse.
Notice
- Before replacing a fuse check that the key has been removed from the ignition and that all the services are switched off and/or disengaged.
- Always disconnect the battery before servicing high current fuses.
- Do not repair fuses and never replace a blown fuse with one that has a higher amp rating. This can severe wire damage and could start a fire.
- Never replace a broken fuse with anything other than a new fuse.
- Even after a fuse is replaced, it will continue to blow if the cause of the overload is not identified and corrected. If the fuse continues to blow, have the vehicle’s electrical system checked by your dealer or a qualified service technician.
Passenger Compartment Fuse Box
The fuse panel is located on the driver’s side under the dashboard (below and to the left of the steering wheel by the brake pedal). Remove the panel cover to access the fuses.
Diagram 1998-2000
| № | A | Protected components |
|---|---|---|
| 1 | 15 | 1998: Hazard Flasher, Stop Lamps |
| 15 | 1999-2000: Brake Pedal Position (BPP) Switch, Speed Control, Multi-Function Switch | |
| 2 | 30 | Wiper Control Module, Windshield Wiper Motor |
| 3 | - | - |
| 4 | 15 | Lighting Control Module, Main Light Switch (1999-2000), Headlamp Dimmer Switch (1998) |
| 5 | 15 | Backup Lamps, Variable Assist Power Steering (VAPS), Turn Signals, Air Suspension, Daytime Running Lamps, Electronic Day/Night Mirror, Shift Lock, EATC, Speed Chime Warning (1999-2000) |
| 6 | 15 | Speed Control, Main Light Switch, Headlamp Dimmer Switch (1998), Lighting Control Module, Clock |
| 7 | 25 | Powertrain Control Module (PCM) Power Diode, Ignition Coils |
| 8 | 15 | Lighting Control Module, Power Mirrors, Remote Keyless Entry, Clock Memory, Radio Memory, Electronic Automatic Temperature Control (EATC), Power Seats (1998), Power Windows, SecuriLock, PATS (1999-2000) |
| 9 | 30 | Blower Motor, A/C-Heater Mode Switch |
| 10 | 10 | Air Bag Module |
| 11 | 5 | Radio |
| 12 | 18 | Circuit Breaker: Lighting Control Module, Flash-to-Pass, Main Light Switch |
| 13 | 15 | Air Bag Module (1998), Warning Lamps, Analog Cluster Gauges and Indicators, Electronic Automatic Transmission, Lighting Control Module, Front Control Unit (1998) |
| 14 | 20 | Circuit Breaker: Window/Door Lock Control, Driver’s Door Module, One Touch Down |
| 15 | 10 | Anti-Lock Brakes, Charge Indicator (1998), Instrument Cluster (1999-2000), Transmission Control Switch (1999-2000) |
| 16 | 20 | Cigar Lighter, Emergency Flasher Relays (1998), Auxiliary Power Point (2000) |
| 17 | 10 | Power Mirrors (1998), Rear Defrost |
| 18 | 10 | Air Bag Module, Digital Instrument Cluster (1998) |
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Diagram 2001-2002
| № | A | Protected components |
|---|---|---|
| 1 | - | - |
| 2 | - | - |
| 3 | - | |
| 4 | 10 | Air Bags |
| 5 | - | - |
| 6 | 15 | Instrument Cluster, Warning Lamps Module, Transmission Control Switch, Lighting Control Module (LCM) |
| 7 | - | - |
| 8 | 25 | Power Train Control Module (PCM) Power Relay, Coil-on -Plugs, Radio Noise Capacitator, Passive Anti-theft System (PATS) |
| 9 | - | - |
| 10 | 10 | Rear Window Defrost |
| 11 | - | - |
| 12 | - | - |
| 13 | 5 | Radio |
| 14 | 10 | Traction Control Switch, Anti-lock Brakes (ABS), Instrument Cluster |
| 15 | 15 | Speed Control Servo, Main Light Switch Illumination, Lighting Control Module (LCM), Clock |
| 16 | 15 | Reversing lamps, Turn Signals, Shift Lock, DRL Module, EVO Steering, Electronic Day/Night Mirror |
| 17 | 30 | Wiper Motor, Wiper Control Module |
| 18 | 30 | Heater Blower Motor |
| 19 | 20 | Auxiliary Power Point |
| 20 | - | - |
| 21 | 15 | Multifunction Switch, Lighting Control Module (LCM), Passive Anti-theft System (PATS) Indicator, Parking Lamps, Instrument Panel Light |
| 22 | 15 | Speed Control Servo, Hazard Lights |
| 23 | 15 | Power Windows/Door Locks, PATS, Exterior Rear View Mirrors, EATC Module, Instrument Cluster, Clock, Lighting Control Module (LCM), Interior Lamps |
| 24 | 10 | Left Hand Low Beam |
| 25 | 20 | Power Point, Cigar Lighter |
| 26 | 10 | Right Hand Low Beam |
| 27 | 25 | Lighting Control Module (LCM), Main Light Switch, Cornering Lamps, Fuel Tank Pressure Sensor |
| 28 | 20 | Power Windows |
| 29 | - | - |
| 30 | - | - |
| 31 | - | - |
| 32 | 20 | ABS Values |
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Engine Compartment Fuse Box Diagram
The power distribution box is located on the passenger’s side of the engine compartment.
| № | A | Protected components |
|---|---|---|
| 1 | 20 | Electric Fuel Pump Relay |
| 2 | 30 | Generator, Starter Relay, Fuses 15, 18 |
| 3 | 25 | Radio, CD Changer, Subwoofer Amplifier |
| 4 | - | - |
| 5 | 15 | Horn Relay |
| 6 | 20 | DRL Module |
| 7 | 20 | Circuit Breaker: Power Door Locks, Power Seats, Trunk Lid Release |
| 8 | 30 | Air Suspension System |
| 9 | 50 | Fuses 5, 9 |
| 10 | 50 | Fuses 1, 2, 6, 7, 10, 11, 13 and Circuit Breaker 14 |
| 11 | 40 | 1998-2000: Fuses 4, 8, 16 and Circuit Breaker 12 |
| 50 | 2001-2002: Fuses 4, 8, 16 and Circuit Breaker 12 | |
| 12 | 30 | PCM Power Relay, PCM |
| 13 | 50 | High Speed Cooling Fan Relay |
| 14 | 40 | Rear Window Defrost Relay, Fuse 17 |
| 15 | 50 | 1998-2000: Anti-Lock Brake Module |
| 40 | 2001-2002: Anti-Lock Brake Module | |
| 16 | - | - |
| 17 | 30 | Circuit Breaker: Cooling Fan Relay |
| R1 | Rear Defrost Relay | |
| R2 | Horn Relay | |
| R3 | Cooling Fan Relay | |
| R4 | Air Suspension Pump Relay | |
Additional Relay Box
The relay center is located on the left-hand fender and affixed to the vacuum reservoir.
| Diode | |
|---|---|
| 1 | PCM Power |
| R1 | A/C WOT Cutout |
| R2 | Fuel Pump |
| R3 | PCM Power |
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