01-91113-01
4. DIAGNOSTIC INFORMATION AND PROCEDURE
1) Oil Leak Diagnosis
Most fluid oil leaks are easily located and repaired by visually finding the leak and replacing or repairing
the necessary parts. On some occasions a fluid leak may be difficult to locate or repair. The following
procedures may help you in locating and repairing most leaks.
Finding the Leak ▶
Identify the fluid. Determine whether it is engine oil, automatic transmission fluid, power steering
fluid, etc.
Identify where the fluid is leaking from. -
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After running the vehicle at normal operating temperature, park the vehicle over a large sheet
of paper.
Wait a few minutes.
You should be able to find the approximate location of the leak by the drippings on the paper. ·
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Visually check around the suspected component.
Check around all the gasket mating surfaces for leaks. A mirror is useful for finding leaks in
areas that are hard to reach.
If the leak still cannot be found, it may be necessary to clean the suspected area with a
degreaser, steam or spray solvent. -
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Clean the area well.
Dry the area.
Operate the vehicle for several miles at normal operating temperature and varying speeds.
After operating the vehicle, visually check the suspected component.
If you still cannot locate the leak, try using the powder or black light and dye method. ·
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Clean the suspected area.
Apply an aerosol-type powder (such as foot powder) to the suspected area.
Operate the vehicle under normal operating conditoins.
Visually inspect the suspected component. You should be able to trace the leak path over the
white powder surface to the source. -
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- Powder Method ▶
01-10
Black Light and Dye Method ▶
A dye and light kit is available for finding leaks, Refer to the manufacturer's directions when using the kit.
Pour the specified amount of dye into the engine oil fill tube.
Operate the vehicle normal operating conditions as directed in the kit.
Direct the light toward the suspected area. The dyed fluid will appear as a yellow path leading to
the source. -
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Once the origin of the leak has been pinpointed and traced back to its source, the cause of the leak must
be determined in order for it to be repaired properly.
If a gasket is replaced, but the sealing flange is bent, the new gasket will not repair the leak. The bent
flange must be repaired also. Before attempting to repair a leak, check for the following conditions and
correct them as they may cause a leak.Repairing the Leak ▶
Gaskets ▶
The fluid level/pressure is too high.
The crankcase ventilation system is malfunctioning.
The seal bore is damaged (scratched, burred or nicked).
The seal is damaged or worn.
Improper installation is evident.
There are cracks in the components.
The shaft surface is scratched, nicked or damaged.
A loose or worn bearing is causing excess seal wear. -
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04-4
1. DESCRIPTION AND OPERATION
1) Exhaust System
When you are inspecting or replacing exhaust system components, make sure there is adequate
clearance from all points on the underbody to avoid possible
overheating of the floor panel and possible damage to the passenger compartment insulation and trim
materials.
Check the complete exhaust system and the nearby body areas and trunk lid for broken, damaged,
missing or mispositioned parts, open seams, holes, loose connections, or other deterioration which
could permit exhaust fumes to seep into the trunk may be an indication of a problem in one of these
areas. Any defects should be corrected immediately.
2) Catalytic Converter (Gasoline Engine)
When jacking or lifting the vehicle from the body side rails, be certain that the lift pads do not contact
the catalytic converter, as this could damage the catalytic converter.
Use of anything other than unleaded fuel will damage the catalyst in the catalytic converter. 1.
2.
Catalytic Converter Structure ▶
The Catalytic converter of monolith type consists of 2
walled metal bodies which is made of Cordierite. The
principal element of converter consists of the materials
like Alumina or oxidized Serume in order to apply to
Ceramic Monolith. Washer coat operates first, and
catalytic metal elements (Pt, Pd, Rh) operates to
washer coat next.
Monolith type is lighter than other types, easy to
manufacture and quickly approaches to prope
r
temperature. Washer coat is used to make a contact
surface with exhaust gas bigger by adhering closely to
small holes
of inner layer. If a lead compound or phosphorus
adheres to the surface and the temperature rises, its
surface is decreased. The total area of general
monolith converter is about 45, 000~500,000ft3. (10
times of a football field) Generally Alumina (AL2 O3) is
used as a raw materialand its 7 phases of gamma,
delta, theta have big areas and high stability for the
temperature, and nowadays gamma Alumina is used
usually.
06-6
2. DESCRIPTION AND OPERATION
1) General Description
The cooling system maintains the engine temperature at an efficient level during all engine operating
conditions.
When the engine is cold, the cooling system cools the engine slowly or not at all. This slow cooling o
f
the engine allows the engine to warm up quickly.
The cooling system includes a radiator and recovery subsystem, cooling fans, a thermostat and
housing, a water pump, and a water pump drive belt. The timing belt drives the water pump.
All components must function properly for the cooling system to operation. The water pump draws the
coolant from the radiator. The coolant then circulates through water jackets in the engine block, the
intake manifold, and the cylinder head. When the coolant reaches the operating
temperature of the thermostat, the thermostat opens. The coolant then goes back to the radiator where
it cools.
This system directs some coolant through the hoses to the heat core. This provides for heating and
defrosting.
The coolant reservoir is connected to the radiator to recover the coolant displaced by expansion from
the high temperatures. The coolant reservoir maintains the correct coolant level.
The cooling system for this vehicle has no radiator cap or filler neck. The coolant is added to the cooling
system through the coolant reservoir.
2) Radiator
This vehicle has a lightweight tube-and-fin aluminum radiator. Plastic tanks are mounted on the upper
and the lower sides of the radiator core.
On vehicles equipped with automatic transaxles, the transaxle fluid cooler lines run through the radiato
r
tank.
A radiator drain plug is on this radiator.
To drain the cooling system, open the drain plug.
3) Coolant Reservoir
The coolant reservoir is a transparent plastic reservoir, similar to the windshield washer reservoir.
The coolant reservoir is connected to the radiator by a hose and to the engine cooling system by anothe
r
hose.
As the vehicle is driven, the engine coolant heats and expands. The portion of the engine coolant
displaced by this expansion flows from the radiator and the engine into the coolant reservoir. The ai
r
trapped in the radiator and the engine is degassed into the coolant reservoir.
When the engine stops, the engine coolant cools and contracts. The displaced engine coolant is then
drawn back into the radiator and the engine. This keeps the radiator filled with the coolant to the desired
level at all times and increases the cooling efficiency.
Maintain the coolant level between the MIN and MAX marks on the coolant reservoir when the system is
cold.
07-51452-01
1. DESCRIPTION AND OPERATION
1) Battey
The sealed battery is standard on all cars. There are no vent plugs in the cover.
The battery is completely sealed, except for two small vent holes in the sides.
These vent holes allow the small amount of gas produced in the battery to escape.
The battery has the following advantages over conventional batteries:
No water addition for the life of the battery.
Overcharge protection. If too much voltage is applied to the battery, it will not accept as much current
as a conventional battery.
In a conventional battery, the excess voltage will still try to charge the battery, leading
to gassing, which causes liquid loss.
Not as liable to self-discharge as a conventional battery. This is particularly important when a battery
is left standing for long periods of time.
More power available in a lighter, smaller case. ·
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The battery has three major functions in the electrical system.
First, the battery provides a source of energy for cranking the engine.
Second, the battery acts as a voltage stabilizer for the electrical system. Finally, the battery
can, for a limited time, provide energy when the electrical demand exceeds the output of the generator.
2) Ratings
<0068004700890088009b009b008c009900a00047008f0088009a0047009b009e0096004700990088009b00900095008e009a00610047004f005800500047008800470099008c009a008c0099009d008c0047008a008800970088008a0090009b00a0004700
990088009b00900095008e0047008b008c009a0090008e0095>ated at 27°C(80°F), which is the
time a fully charged battery will provide 25 amperes of current flow at or above 10.5 volts (2) a cold
cranking am
p rating determined under testing at -18°C(0°F), which indicates the cranking load
capacity. ▶
(1)Reserve Capacity
The reserve capacity (RC) is the maximum length of time it is possible to travel at night with the minimum
electrical load and no generator output. Expressed in minutes, the RC rating is the time required for a
fully charged battery, at a temperature of 27°C(80°F) and being discharged at a current of 25
amperes, to reach a terminal voltage of 10.5 volts.
07-8
5) Jump Starting Procedure
Position the vehicle with the charged battery so that the jumper cables will reach from the charged
battery to the battery that requires charging.
Turn off the ignition, all the lights, and all the electrical loads in both vehicles.
Leave the hazard flasher on if jump starting where there may be other traffic and any other lights
needed for the work area.
Apply the parking brake firmly in both vehicles. 1.
2.
3.
4.
Shift an automatic transmission to PARK. 5.
Clamp one end of the first jumper cable to the positive terminal on the booster battery. Make sure it
does not touch any other metal parts.
Clamp the other end of the same cable to the positive terminal on the discharged battery. Never
connect the other end to the negative terminal of the discharged battery. 6.
7.
Clamp one end of the second cable to the negative terminal of the booster battery.
Make the final connection to a solid engine ground, such as the engine lift bracket at least 450
millimeters (18 inches) from the discharged battery.
Start the engine of the vehicle with the good battery.
Run the engine at a moderate speed for several minutes.
Then start the engine of the vehicle with the discharged battery.
Remove the jumper cables by reversing the above sequence exactly, removing the negative cable
from the vehicle with the discharged battery first.
While removing each clamp, take care that it does not touch any other metal while the other end
remains attached. 8.
9.
10.
11.
12.In order to avoid damaging the vehicle make sure the cables are not on or near pulleys, fans, or
other parts that will move when the engine starts.
In order to avoid injury, do not use cables that have loose or missing insulation.
07-91452-01
6) Alternator
Alternators are equipped with internal regulators.
Unlike three-wire generators, the alternator may be used with only two connections: battery positive and
an "D+" terminal to the charge indicator lamp.
As with other charging systems, the charge indicator lamp lights when the ignition switch is turned to
RUN, and goes out when the engine is running.
If the charge idicator is on with the engine running, a charging system defect is indicated. This indicato
r
light will glow at full brilliance for several kinds of defects as well as when the system voltage is too high
or too low.
The regulator voltage setting varies with temperature and limits the system voltage by controlling roto
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field current.
Achieve correct average field current for proper system voltage control by varying the on-off time. At high
speeds, the on-time may be 10 percent and the off-time 90 percent.
At low speeds, with high electrical loads, the on-time may be 90 percent and the off-time 10 percent.
7) Charging System
Generators use a new type of regulator that incorporates a diode trio.
A Delta stator, a rectifier bridge, and a rotor with slip rings and brushes are electrically similar
to earlier generators.
A conventional pulley and fan are used.
There is no test hole.
8) Starter
Wound field starter motors have pole pieces, arranged around the armature, which are energized by
wound field coils.
Enclosed shift lever cranking motors have the shift lever mechanism and the solenoid plunger enclosed
in the drive housing, protecting them from exposure to dirt, icy conditions, and splashes.
In the basic circuit, solenoid windings are energized when the switch is closed.
The resulting plunger and shift lever movement causes the pinion to engage the engine flywheel ring
gear.
The solenoid main contacts close. Cranking then takes place.
When the engine starts, pinion overrun protects the armature from excessive speed until the switch is
opened, at which time the return spring causes the pinion to disengage.
To prevent excessive overrun, the switch should be released immediately after the engine starts.
02-58710-01
NO.Input Signal Name Logic Status
27 Central door lock switch ON = GND, OFF = OPEN
28 Multifunction auto light switch ON = GND, OFF = OPEN
29 Turn signal lamp switch ON = BAT/GND, OFF = OPEN
(approx. 5.1 V ~ 9.2 V)
30 Rain sensor ON = GND (DATA), OFF = BAT
31 Telematics ON = GND (DATA), OFF = BAT
32 Diagnosis ON = GND (DATA), OFF = BAT (KWP2000)