engine Peugeot 406 C 2004 Service Manual

02-02-2004
Only use products recom-
mended by PEUGEOT.
To ensure best perfor- mance from components
as important as the power steeringand the braking system, PEUGEOT selects and offers specific products.
To prevent damage to the electri- cal units, avoid washing theengine.
MAINTENANCE OF YOUR 406 COUPE 31
CHECKS Battery
At the start of winter, have your bat-
tery checked by a PEUGEOT dealer. Air filter Regular replacement of the filter ele- ment is essential. If you drive in
very dusty conditions, change ittwice as often. Brake pads Brake pad wear depends on the style of driving, in particular for vehi-cles that are used in town, for shortjourneys. It may be necessary to check the thickness of the pads even betweenservices. Handbrake Where the handbrake travel is too great or there is a reduction in theperformance of the system, thehandbrake should be adjusted, evenbetween services. Have the system checked by a
PEUGEOT dealer. Manual gearbox This does not require an oil change. Have the level checked in accor-dance with the manufacturer's ser-vicing schedule. Oil filterReplace the cartridge regularly in accordance with the servicing sched-ule.

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MAINTENANCE OF YOUR 406 COUPE37
CHANGING A FUSE The fuse boxes are under the fascia and in the engine compartment. Fascia fuse box
Turn the three screws a quarter turn with a coin. Pull at
Aand tilt the
cover to access the fuses. Removing and changing a fuse Before changing a fuse you must find out the cause of the fault and have it put
right. The fuse numbers are indicated on the fuse box. Use the special pliers
Aattached to the box.
Always change a faulty fuse for one of the same rating.
Correct Incorrect Pliers AFuse no. Rating FunctionsA 20 A Locking/Unlocking.
B 10 A Rear fog lamps.
C 40 A Demisting the mirrors.
DÐ Not used.
E 30 A Electric windows.
F 15 A Supply to instrument panel -
Display - Audio equipment -Satellite navigation system - Air conditioning.
Remove the fascia lower trim to access the Built-in Systems Interface.

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The electrical system of your vehicle is designedto operate with standardor optional equipment.
Before installing other electricalequipment or accessories on yourvehicle, contact a PEUGEOT
dealer. Some electrical accessories or the way in which they are fitted canhave damaging effects on theoperation of your vehicle; theelectronic control circuits, theaudio circuit and the batterycharging circuit. PEUGEOT will not accept respon- sibility for the cost incurred inrepairing your vehicle or for recti-fying malfunctions resulting fromthe installation of accessories notsupplied and not recommendedby PEUGEOT and not installed inaccordance with its instructions, inparticular where the equipment inquestion consumes more than
10 milliamperes.
MAINTENANCE OF YOUR 406 COUPE
40
Engine compartment fuses Fuse box
To access the fuse box in the engine compartment (beside the battery),
unclip the cover. Carefully close the cover when you have finished.
Fuse N¡ Rating Functions
1* 10 A
Reversing lights - Double injection relay - Engine oil
temperature - Oil level - Air conditioning compressor.
2* 15 AFuel pump - Canister solenoid valve.
3* 10 A Control unit.
4* 10 A Engine control unit and automatic gearbox.
5 10 A Particulate Emission Filter control unit.
6 15 A Front fog lamps.
7 20 A Headlamp wash.
8* 20 A Direct petrol injection engine control unit - Clutch pedal.
9* 15 A Left-hand dipped beam.
10* 15 A Right-hand dipped beam.

02-02-2004
MAINTENANCE OF YOUR 406 COUPE37
CHANGING A FUSE The fuse boxes are under the fascia and in the engine compartment. Fascia fuse box
Turn the three screws a quarter turn with a coin. Pull at
Aand tilt the
cover to access the fuses. Removing and changing a fuse Before changing a fuse you must find out the cause of the fault and have it put
right. The fuse numbers are indicated on the fuse box. Use the special pliers
Aattached to the box.
Always change a faulty fuse for one of the same rating.
Correct Incorrect Pliers AFuse no. Rating FunctionsA 20 A Locking/Unlocking.
B 10 A Rear fog lamps.
C 40 A Demisting the mirrors.
DÐ Not used.
E 30 A Electric windows.
F 15 A Supply to instrument panel -
Display - Audio equipment -Satellite navigation system - Air conditioning.
Remove the fascia lower trim to access the Built-in Systems Interface.

02-02-2004
MAINTENANCE OF YOUR 406 COUPE
42
BATTERY
To charge the battery using a battery charger:
Ð Disconnect the battery,
Ð Follow the instructions for use given by the battery charger manufacturer,
Ð Reconnect starting with the negative (Ð) terminal,
Ð Check that the terminals and connectors are clean. If they are covered with sul-
phate (white or greenish deposit), disconnect them and clean them.
To start the vehicle from another battery:
Ð Connect the red cable to the positive (+) terminals of the two batteries,
Ð Connect one end of the green or black cable to the negative (Ð) terminal of the slave battery,
Ð Connect the other end of the green or black cable to an earth point on the bro- ken down vehicle, as far as possible from the battery,
Operate the starter, let the engine run.
Wait for the engine to return to idle, then disconnect the cables.
Ð Never disconnect a terminal when the engine is running.
Ð Never charge a battery without first disconnecting the terminals.
Ð Close the sunroof before disconnecting the battery. If it does not oper-
ate normally following re-connection of the battery, you must re-initialise it by turning the control to the maximum tilt position and pressing it for afew seconds.
Ð After every reconnection of the battery, switch on the ignition and wait
1 minute before starting to allow the electronic systems to be initialised. Ifslight difficulties are experienced after this, please contact a PEUGEOT
dealer.
It is advisable to disconnect the battery if the vehicle is not to be used
for a period of more than one month.
Economy mode
With the engine switched off and the ignition key in the "running" or"accessories" position for about half
an hour, certain electrical equipment(displays, instrument panel, warninglights, courtesy lights, electric win-
dows, wipers etc.) will switch offautomatically to avoid draining the
battery. Once the electrical equipment goes into economy mode, it is necessaryto start the engine to enable theequipment to work again.

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TOWING A TRAILER,
CARAVAN, BOAT etc.
Only use original PEUGEOT tow bars that have been tested andapproved from the design stage ofyour vehicle. The tow bar must be fitted by a
PEUGEOT dealer.
Your vehicle is primarily designed for transporting people and luggage but
it may also be used for towing a trailer. Driving with a trailer subjects the towing vehicle to more significantstress and its driver must be particu-larly careful. Air density decreases with altitude, thus reducing engine performance.
Above 1 000 metres, the maximum
towing load must be reduced by 10 %
and so on for every 1 000 metres ofaltitude.Driving advice Distribution of loads:
Distribute the
load in the trailer so that the heaviest items are as close as possible to theaxle and the nose weight approachesthe maximum permitted withoutexceeding it. Cooling: Towing a trailer on a slope
increases the temperature of the coolant. As the fan is electrically controlled, its cooling capacity is not dependenton the engine speed.
On the contrary, use a high gear to lower the engine speed and reduceyour speed. The maximum towing load on a long slope depends on the gradient andthe outside temperature. In all cases, pay attention to the coolant temperature. If the warning light comes on, stop
the vehicle and switch off the engineas soon as possible. Tyres:
Check the tyre pressures of
the towing vehicle and of the trailer,observing the recommended pres-sures. Braking: Towing increases the brak-
ing distance.Lights: Check the electrical signalling
on the trailer.Side wind: Take into acount the
increased sensitivity to side wind.
MAINTENANCE OF YOUR 406 COUPE 45

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TECHNICAL DATA
132
PETROL ENGINES
MODELS: Model codes
8CRFR 8C3FZ 8CXFX
ENGINES Capacity (cm 3
)
Bore x stroke Number of valvesMax. power: EU standard (KW)
Max. power at engine speed (r.p.m) Max. torque: EU standard (Nm)
Max. torque at engine speed (r.p.m)FuelCatalytic converterElectronic injection GEARBOX
CAPACITIES (in litres) Engine (with filter replacement)Gearbox - Final drive 2 Litre 16V 2.2 litre 16V 3 litre 24V V6
Injection
1 997 2 230 2 946
85 x 88 86 x 96 87 x 82.6 16 16 24
99 116 152
6 000 5 650 6 000
190 217 285
4 100 3 900 3 750
Unleaded Unleaded Unleaded Ye s Ye s Ye s
Ye s Ye s Ye s
Automatic Manual Manual Automatic (4-speed) (5-speed) (5-speed) (4-speed)
4.25 4.25 Ð ÐÐ 1.85 1.85 Ð

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DIESEL ENGINES
MODELS: Model codes 8C4HX
ENGINES Capacity (cm 3
)
Bore x stroke Number of valvesMax. power: EU standard (KW)
Max. power at engine speed (r.p.m) Max. torque: EU standard (Nm)
Max. torque at engine speed (r.p.m)FuelCatalytic converterElectronic injection GEARBOX
CAPACITIES (in litres) Engine (with filter replacement)Gearbox - Final drive Turbo Diesel
2.2 litre 16V HDI
2 179
85 x 96 1698
4 000
314
2 000
Diesel Ye s
Ye s
Manual
(5-speed)
ÐÐ
TECHNICAL DATA 133

TECHNICAL DATA
134
Fuel consumption values correct at time of printing. CONSUMPTION As per directive 99/100 in m.p.g. (litres/100 km)
Engine Gearbox Model Urban Inter-urban Mixed Emission of
codes driving driving driving CO 2by mass
2 litre 16V Automatic RFR 23.0 (12.3) 43.5 (6.5) 32.8 (8.6) 206 g/km
2.2 litre 16V Manual 3FZ 22.0 (12.8) 43.5 (6.5) 32.0 (8.8) 210 g/km
3 litre 24V V6 Manual XFX 19.6 (14.4) 38.2 (7.4) 28.2 (10) 238 g/km
3 litre 24V V6 Automatic XFX 19.2 (14.7) 36.2 (7.8) 27.2 (10.4) 248 g/km
2.2 litre 16V HDI Manual 4HX 32.0 (8.8) 57.6 (4.9) 44.1 (6.4) 168 g/km
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Engines Gearboxes Model codes: 8C
¥ Kerb weight
¥ Gross vehicle weight (GVW)
¥ Gross train weight (GTW)*
¥ Braked trailer weight (within GTW limit)
¥ Recommended nose weight
* The speed of a towing vehicle is limited to 60 m.p.h. (100 km/h).
Towing weights and loads (in kg)
2 litre 2.2 litre 3 litre 3 litre 2.2 litre
16 valve 16 valve 24V V6 24V V6 16V HDI
Automatic Manual Manual Automatic Manual RFR 3FZ XFX XFX 4HX
1 400 1 370 1 458 1 481 1 410
1 800 1 910 1 827 1 850 1 835
3 000 3 110 3 127 3 150 3 135
1 300 1 500 1 300 1 300 1 300 80 80 80 80 80
TECHNICAL DATA 135