
Illumination of the service engine soonindicator, charging system warning light orthe temperature warning light, fluid leaks,strange odors, smoke or loss of enginepower could indicate that the emissioncontrol system is not working properly.
An improperly operating or damagedexhaust system may allow exhaust toenter the vehicle. Have a damaged orimproperly operating exhaust systeminspected and repaired immediately.
Do not make any unauthorized changes toyour vehicle or engine. By law, vehicleowners and anyone who manufactures,repairs, services, sells, leases, tradesvehicles, or supervises a fleet of vehiclesare not permitted to intentionally removean emission control device or prevent itfrom working. Information about yourvehicle’s emission system is on the VehicleEmission Control Information Decallocated on or near the engine. This decalalso lists engine displacement.
Please consult your warranty informationfor complete details.
On-Board Diagnostics (OBD-II)
Your vehicle has a computer known as theon-board diagnostics system (OBD-II) thatmonitors the engine’s emission controlsystem. The system protects theenvironment by making sure that yourvehicle continues to meet governmentemission standards. The OBD-II systemalso assists a service technician in properlyservicing your vehicle.
When the service engine soonindicator illuminates, the OBD-IIsystem has detected amalfunction. Temporary malfunctions maycause the service engine soon indicator toilluminate. Examples are:
1.Your vehicle has run out of fuel—theengine may misfire or run poorly.
2.Poor fuel quality or water in thefuel—the engine may misfire or runpoorly.
3.The fuel fill inlet may not have closedproperly. See Refueling (page 31).
4.Driving through deep water—theelectrical system may be wet.
You can correct these temporarymalfunctions by filling the fuel tank withgood quality fuel, properly closing the fuelfill inlet or letting the electrical system dryout. After three driving cycles without theseor any other temporary malfunctionspresent, the service engine soon indicatorshould stay off the next time you start theengine. A driving cycle consists of a coldengine startup followed by mixed city andhighway driving. No additional vehicleservice is required.
If the service engine soon indicator remainson, have your vehicle serviced at the firstavailable opportunity. Although somemalfunctions detected by the OBD-II maynot have symptoms that are apparent,continued driving with the service enginesoon indicator on can result in increasedemissions, lower fuel economy, reducedengine and transmission smoothness andlead to more costly repairs.
Readiness for Inspection andMaintenance (I/M) Testing
Some state and provincial and localgovernments may haveInspection/Maintenance (I/M) programsto inspect the emission control equipmenton your vehicle. Failure to pass thisinspection could prevent you from gettinga vehicle registration.
If the service engine soonindicator is on or the bulb doesnot work, your vehicle may needservice. See On-Board Diagnostics.
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201803, Third-Printing-Engine Emission Control

BREAKING-IN
You need to break in new tires forapproximately 300 mi (480 km). Duringthis time, your vehicle may exhibit someunusual driving characteristics.
Avoid driving too fast during the first1,000 mi (1,600 km). Vary your speedfrequently and change up through thegears early. Do not labor the engine.
Do not tow during the first 1,000 mi(1,600 km).
REDUCED ENGINE
PERFORMANCE
WARNING: If you continue to driveyour vehicle when the engine isoverheating, the engine could stopwithout warning. Failure to follow thisinstruction could result in the loss ofcontrol of your vehicle.
If the engine coolant temperature gaugeneedle moves to the upper limit position,the engine is overheating. See Gauges(page 16).
You must only drive your vehicle for a shortdistance if the engine overheats. Thedistance you can travel depends onambient temperature, vehicle load andterrain. The engine continues to operatewith limited power for a short period oftime.
If the engine temperature continues to rise,the fuel supply to the engine reduces. Theair conditioning switches off and the enginecooling fan operates continually.
1.Gradually reduce your speed and stopyour vehicle as soon as it is safe to doso.
2.Immediately switch the engine off toprevent severe engine damage.
3.Wait for the engine to cool down.
4.Check the coolant level. See EngineCoolant Check (page 96).
5.Have your vehicle checked as soon aspossible.
ECONOMICAL DRIVING
Your fuel economy is affected by severalthings, such as how you drive, theconditions you drive under, and how youmaintain your vehicle.
You may improve your fuel economy bykeeping these things in mind:
•Accelerate and slow down in a smooth,moderate fashion.
•Drive at steady speeds withoutstopping.
•Anticipate stops; slowing down mayeliminate the need to stop.
•Combine errands and minimizestop-and-go driving.
•Close the windows for high-speeddriving.
•Drive at reasonable speeds (travelingat 55 mph [88 km/h] uses 15% lessfuel than traveling at 65 mph [105km/h]).
•Keep the tires properly inflated and useonly the recommended size.
•Use the recommended engine oil.
•Perform all regularly scheduledmaintenance.
Avoid these actions; they reduce your fueleconomy:
•Sudden accelerations or hardaccelerations.
•Revving the engine before turning it off.
•Idle for periods longer than one minute.
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201803, Third-Printing-Driving Hints

Protected ComponentFuse RatingFuse or RelayNumber
Power brake assist module – HydroMax.5A11
Air conditioning compressor clutch.10A12
Catalyst monitor sensor.20A13Engine heated exhaust gas oxygen sensor#11 and #21.Canister vent.Vapor management valve.
Powertrain control module relay coil.5A14Powertrain control module keep alivememory.
Powertrain control module power.20A15
Instrument panel dimmer module.20A16Park lamp feeds.Trailer tow running lamp relay coil.
Ignition coils.20A17Radio capacitors.
HydroMax – Anti-lock brake systemmodule.30A18
Powertrain control module.10A19
Daytime running lamps.20A110
Fuel pump relay coil.20A111Powertrain control module.Fuel pump diode.
Instrument panel - backup lamp feed.25A112Trailer tow backup lamps feed.
Trailer tow electric brake controller feed.30A213
Instrument panel battery feed (fuse #15,21).60A214
Lighting primary fuse.Power distribution box fuse #19.
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201803, Third-Printing-Fuses

Protected ComponentFuse RatingFuse or RelayNumber
Trailer tow backup lamp feed.25A1F7Backup lamp feed.
Not used.—F8
Daytime running lamps.20A1F9
Not used.—F10
Not used.—F11
Not used.—F12
Not used.—F13
Not used.—F14
Power brake assist module (HydroMax).5A1F15
Powertrain control module power.20A1F16
Catalyst monitor sensor.20A1F17Engine heated exhaust gas oxygen sensor#11 and #21.Canister vent valve.Vapor management valve.
Radio capacitors.20A1F18Ignition coils.
Powertrain control module.10A1F19
HydroMax module brake on/off relay feed.10A1F20
Powertrain control module.20A1F21Fuel pump diode.Fuel pump relay coil.
Brake transmission shift interlock.10A1F22
Not used.—F23
Not used.—F24
Blower motor relay feed.40A2J1
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201803, Third-Printing-Fuses

Protected ComponentFuse RatingFuse or RelayNumber
Trailer tow backup lamp feed.
Daytime running lamps.20A1M2
4–channel anti-lock brake system module(Hydromax).30A1M3
Powertrain control module run/start.20A1M4Fuel pump relay coil.Fuel pump diode.
Brake lamps.10A1M5
Radio capacitors.20A1M6Ignition coils.
Backup lamp relay coil.20A1M7Air conditioning clutch coil.Air conditioning demand switch.
Catalyst monitor sensor.20A1M8Engine heated exhaust gas oxygen sensor#11 and #21.Canister vent valve.Vapor management valve.
Powertrain control module power.20A1M9
Brake shift interlock.5A1M10
Powertrain control module relay keep alivepower.5A1M11
Powertrain control module relay coil.
Parking lamps feed.20A1M12
Not used.DiodeD1
Fuel pump.DiodeD2
Air conditioning clutch.DiodeD3
Not used.—R2-1
Powertrain control module relay feed(power distribution box fuse M6, M7, M8,M9).
30A2J1
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201803, Third-Printing-Fuses

UNDER HOOD OVERVIEW - COMMERCIAL CHASSIS
Engine coolant reservoir. See Engine Coolant Check (page 96).A
Engine oil filler cap. See Engine Oil Check (page 95).B
Automatic transmission fluid dipstick. See Automatic Transmission FluidCheck (page 101).C
Engine compartment fuse box. See Fuses (page 71).D
Engine oil dipstick. See Engine Oil Dipstick (page 95).E
Air filter assembly. See Changing the Engine Air Filter (page 107).F
Power steering fluid reservoir. See Power Steering Fluid Check (page 104).G
Brake fluid reservoir. See Brake Fluid Check (page 102).H
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UNDER HOOD OVERVIEW - MOTORHOME CHASSIS
Engine coolant reservoir. See Engine Coolant Check (page 96).A
Engine oil filler cap. See Engine Oil Check (page 95).B
Automatic transmission fluid dipstick. See Automatic Transmission FluidCheck (page 101).C
Engine compartment fuse box. See Fuses (page 71).D
Air filter assembly. See Changing the Engine Air Filter (page 107).E
Engine oil dipstick. See Engine Oil Dipstick (page 95).F
Power steering fluid reservoir. See Power Steering Fluid Check (page 104).G
Brake fluid reservoir. See Brake Fluid Check (page 102).H
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201803, Third-Printing-MaintenanceE225839HGFEABCD

ENGINE OIL DIPSTICK
MINA
MAXB
ENGINE OIL CHECK
To check the engine oil level consistentlyand accurately, do the following:
1.Make sure the parking brake is on. Makesure the transmission is in park (P) orneutral (N).
2.Run the engine until it reaches normaloperating temperature.
3.Make sure that your vehicle is on levelground.
4.Switch the engine off and wait 15minutes for the oil to drain into the oilpan. Checking the engine oil level toosoon after you switch the engine offmay result in an inaccurate reading.
5.Open the hood.
6.Remove the dipstick and wipe it witha clean, lint-free cloth. See UnderHood Overview (page 93).
7.Reinstall the dipstick and remove itagain to check the oil level. See UnderHood Overview (page 93).
8.Make sure that the oil level is betweenthe maximum and minimum marks. Ifthe oil level is at the minimum mark,add oil immediately. See Capacitiesand Specifications (page 138).
9.If the oil level is correct, replace thedipstick and make sure it is fully seated.
Note:Do not remove the dipstick when theengine is running.
Note: If the oil level is between themaximum and minimum marks, the oil levelis acceptable. Do not add oil.
Note:The oil consumption of new enginesreaches its normal level after approximately3,000 mi (5,000 km).
Adding Engine Oil
WARNING: Do not remove thefiller cap when the engine is running.
Do not use supplemental engine oiladditives because they are unnecessaryand could lead to engine damage that maynot be covered by the vehicle Warranty.
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