transmission DODGE GRAND CARAVAN 2004 Owner's Manual

ONBOARD DIAGNOSTIC SYSTEM Ð OBD II
Your vehicle is equipped with a sophisticated onboard
diagnostic system called OBD II. This system monitors
the performance of the emissions, engine, and automatic
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sions well within current government regulations.
If any of these systems require service, the OBD II system
will turn on the ªMalfunction Indicator Light.º It will
also store diagnostic codes and other information to
assist your service technician in making repairs. Al-
though your vehicle will usually be drivable and not
need towing, see your dealer for service as soon as
possible. CAUTION!Prolonged driving with the ªMalfunction Indicator
Lightº on could cause further damage to the emis-
sion control system. It could also affect fuel economy
and driveability. The vehicle must be serviced before
any emissions tests can be performed.
If the ªMalfunction Indicator Lightº is flashing
while the engine is running, severe catalytic con-
verter damage and power loss will soon occur. Im-
mediate service is required.300 MAINTAINING YOUR VEHICLE

To minimize the possibility of catalyst damage:
² Do not shut off the engine or interrupt the ignition
when the transmission is in gear and the vehicle is in
motion.
² Do not try to start engine by pushing or towing the
vehicle.
² Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough
idling or malfunctioning operating conditions.
Maintenance-Free Battery
The top of the MAINTENANCE-FREE battery is perma-
nently sealed. You will never have to add water, nor is
periodic maintenance required. WARNING!² Battery fluid is a corrosive acid solution and can
burn or even blind you. Don't allow battery fluid
to contact your eyes, skin or clothing. Don't lean
over a battery when attaching clamps. If acid
splashes in eyes or on skin, flush the area imme-
diately with large amounts of water.
² Battery gas is flammable and explosive. Keep
flame or sparks away from the battery. Don't use
a booster battery or any other booster source with
an output greater than 12 volts. Don't allow cable
clamps to touch each other.
² Battery posts, terminals and related accessories
contain lead and lead compounds. Wash hands
after handling. MAINTAINING YOUR VEHICLE 311
7

² Check coolant freeze point in the radiator and in the
coolant recovery bottle. If antifreeze needs to be
added, contents of coolant recovery bottle must also be
protected against freezing.
² If frequent coolant additions are required, or if the
level in the coolant recovery bottle does not drop when
the engine cools, the cooling system should be pres-
sure tested for leaks.
² Maintain coolant concentration at 50% ethylene glycol
antifreeze (minimum) in water for proper corrosion
protection of your engine which contains aluminum
components.
² Make sure that the radiator and coolant recovery
bottle overflow hoses are not kinked or obstructed.
² Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean, also. ² Do not change the thermostat for summer or winter
operation. If replacement is ever necessary, install
ONLY the correct type thermostat. Other designs may
result in unsatisfactory cooling performance.
² Increasing engine speed at idle does not reduce cool-
ant temperature! Put transmission in NEUTRAL and
let engine idle at normal engine idle speed.
Hoses And Vacuum/Vapor Harnesses
Inspect surfaces of hoses and nylon tubing for evidence
of heat and mechanical damage. Hard or soft spots,
brittle rubber, cracking, tears, cuts, abrasions, and exces-
sive swelling indicate deterioration of the rubber.
Pay particular attention to those hoses nearest to high
heat sources such as the exhaust manifold. Inspect hose
routing to be sure hoses do not come in contact with any
heat source or moving component which may cause heat
damage or mechanical wear.322 MAINTAINING YOUR VEHICLE

Fuel System Hoses
Electronic Fuel Injection high pressure fuel systems are
designed with hoses and clamps which have unique
material characteristics to provide adequate sealing and
resist attack by deteriorated gasoline.
You are urged to use only the manufacturers specified
hoses and clamps, or their equivalent in material and
specification, in any fuel system servicing. It is manda-
tory to replace all clamps that have been loosened or
removed during service. Care should be taken in install-
ing new clamps to insure they are properly torqued.
Automatic Transmission
The automatic transmission and differential assembly are
contained within a single housing.
All automatic transmissions are equipped with a conven-
tional filler tube and dipstick. If fluid is added, it should
be added through the dipstick hole in the case. The dipstick is located just behind the radiator, lower
right side.
Selection of Lubricant
It is important that the proper lubricant is used in the
transmission to assure optimum transmission perfor-
mance. Use only manufacturers recommended transmis-
sion fluid, refer to Recommended Fluids, Lubricants and
Genuine Parts for correct fluid type. It is important that
the transmission fluid be maintained at the prescribed
level using the recommended fluid.326 MAINTAINING YOUR VEHICLE

CAUTION!Using a transmission fluid other than the manufac-
turers recommended fluid may cause deterioration
in transmission shift quality and/or torque converter
shudder. Using a transmission fluid other than the
manufacturers recommended fluid will result in
more frequent fluid and filter changes. Refer to
Recommended Fluids, Lubricants and Genuine Parts
for correct fluid type. Procedure For Checking Fluid Level
The fluid level in the automatic transmission should be
checked whenever the vehicle is serviced. Operation with
an improper fluid level will greatly reduce the life of the
transmission and of the fluid.
To properly check the automatic transmission fluid level,
the following procedure must be used:
1. The vehicle must be on level ground.
2. The engine should be running at curb idle speed for a
minimum of 60 seconds.
3. Fully apply parking brake.
4. Place the gear selector momentarily in each gear
position ending with the lever in P (PARK). Wipe the area
around the dipstick clean to eliminate the possibility of
dirt entering the transmission. MAINTAINING YOUR VEHICLE 327
7

5. Remove the dipstick and determine if the fluid is hot
or warm. Hot fluid is approximately 180ÉF (82ÉC), which
is the normal operating temperature after the vehicle has
been driven at least 15 miles (24 km). The fluid cannot be
comfortably held between the finger tips. Cold is when
the fluid is below 80ÉF (27ÉC).
6. Wipe the dipstick clean and reinsert until seated.
Remove dipstick and note reading.
a. If the fluid is hot, the reading should be in the
crosshatched area marked ªHOTº (between the upper
two holes in the dipstick).
b. If the fluid is cold, the fluid level should be between
the lower two holes in the area marked ªCOLDº.
If the fluid level indicates low, add sufficient fluid to
bring to the proper level. CAUTION!Do not overfill. Dirt and water in the transmission
can cause serious damage. To prevent dirt and water
from entering the transmission after checking or
replenishing fluid, make certain that the dipstick cap
is reseated properly.
Fluid and Filter Changes
Automatic transmission fluid should be changed on all
transmissions as follows:
Normal Usage Ð No change necessary
Severe Usage (fluid and filter) Ð 60,000 miles (96 000 km)
Severe Usage is defined as:
² Police, taxi, limousine, commercial type operation, or
trailer towing where the vehicle is driven regularly for
more than 45 minutes of continuous operation.328 MAINTAINING YOUR VEHICLE

NOTE: Refer to Section 8 of this manual for Mainte-
nance Schedules.
If the transmission is disassembled for any reason, the
fluid and filter should be changed.
Special Additives
Do not add any fluid additives to the transmission. The
only exception to this policy is the use of special dyes to
aid in detecting fluid leaks. The use of transmission
sealers should be avoided as they may adversely affect
seals. All Wheel Drive (AWD)
Under normal operating conditions, periodic fluid level
checks and lubricant changes for the Power Transfer
Unit, Overrunning Clutch and Rear Carrier, are not
required. However when the vehicle is serviced for other
reasons, the exterior surface of these components should
be inspected for evidence of fluid leaks. Confirmed leaks
should be repaired as soon as possible.
Power Transfer Unit
The fluid should be maintained at the bottom of the filler
hole opening. If it becomes necessary to add or replace
the fluid, use only the manufacturers recommended
fluid, refer to Recommended Fluids, Lubricants and
Genuine Parts for correct fluid type.
Overrunning Clutch
The fluid should be maintained at the bottom of the filler
hole opening. If it becomes necessary to add or replace
the fluid, use only the manufacturers recommended MAINTAINING YOUR VEHICLE 329
7

transmission fluid, refer to Recommended Fluids, Lubri-
cants and Genuine Parts for correct fluid type. To assure
performance, it is important that the proper lubricant be
used.
Rear Carrier
The fluid should be maintained at the bottom of the filler
hole opening. if it becomes necessary to add or replace
the fluid, use only the manufacturers recommended
fluid, refer to Recommended Fluids, Lubricants and
Genuine Parts for correct fluid type.
Fluid Changes
The fluid should be changed as follows:
Normal Usage No Service Required
Severe Usage
Power Transfer Unit 15,000 miles (24 000 km)
Overrunning Clutch 22,500 miles (36 000 km)
Rear Carrier 22,500 miles (36 000 km) Severe Usage is defined as:
1. More than 50% of vehicle operation in stop and go
traffic where the vehicle is driven regularly for more than
45 minutes of continuous operation, such as in heavy city
or in construction zone traffic,
2. Police, taxi, limousine, commercial type operation, or
trailer towing where the vehicle is driven regularly for
more than 45 minutes of continuous operation.
Front And Rear Wheel Bearings
Front and rear wheel bearings are permanently sealed.
No regular maintenance is required for these compo-
nents.
Appearance Care and Protection from Corrosion
Protection of Body and Paint from Corrosion
Vehicle body care requirements vary according to geo-
graphic locations and usage. Chemicals that make roads
passable in snow and ice, and those that are sprayed on330 MAINTAINING YOUR VEHICLE

Chassis
Component Fluids, Lubricants and Genuine Parts.
Automatic Transmission Mopar t ATF+4 Automatic Transmission Fluid.
AWD Power Transfer Unit Mopar t Gear Lubricant 75W-90.
AWD Overrunning Clutch Mopar t ATF+4 Automatic Transmission Fluid.
AWD Rear Carrier Mopar t Gear Lubricant 75W-90.
Brake Master Cylinder Mopar t DOT 3 and SAE J1703 should be used. If DOT 3 brake fluid is not
available, then DOT 4 or DOT 4+ is acceptable. Use only recommended
brake fluids.
Power Steering Reservoir Mopar t ATF+4 Automatic Transmission Fluid. MAINTAINING YOUR VEHICLE 345
7

² Taxi, police, or delivery service (commercial ser-
vice). L
² Off-road or desert operation.
NOTE: Most vehicles are operated under the conditions
listed for Schedule 9 B 9 .
Second is Schedule ªAº . It is for vehicles that are not
operated under any of the conditions listed under Sched-
ule 9 B 9 .
Use the schedule that best describes your driving condi-
tions. Where time and mileage are listed, follow the
interval that occurs first.
CAUTION!Failure to perform the required maintenance items
may result in damage to the vehicle. At Each Stop for Fuel
² Check the engine oil level about 5 minutes after a fully
warmed engine is shut off. Checking the oil level while
the vehicle is on level ground will improve the accu-
racy of the oil level reading. Add oil only when the
level is at or below the ADD or MIN mark.
² Check the windshield washer solvent and add if
required.
Once a Month
² Check tire pressure and look for unusual wear or
damage.
² Inspect the battery and clean and tighten the terminals
as required.
² Check the fluid levels of coolant reservoir, brake
master cylinder and transmission; add as needed.
² Check all lights and all other electrical items for correct
operation. MAINTENANCE SCHEDULES 349
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