Downloaded from www.Manualslib.com manuals search engine 1D-5 Engine Mechanical:
11) Connect negative cable at battery.
12) Install special tools (Compression gauge) into spark plug hole.
Special tool
(A): 09915–64512
(B): 09915–64530
(C): 09915–67010
13) Disengage clutch (1) (to lighten starting load on engine) for M/T vehicle, and depress accelerator
pedal (2) all the way to make throttle fully open.
14) Crank engine with fully charged battery, and read the highest pressure on compression gauge.
NOTE
• For measuring compression pressure, crank engine at least 250 r/min. by using
fully charged battery.
• If measured compression pressure is lower than limit value, check installation
condition of special tool. If it is properly
installed, possibility is compression
pressure leakage from where piston ring
and valve contact.
Compression pressure
Standard: 1400 kPa (14.0 kg/cm2, 199.0 psi)
Limit: 1100 kPa (11.0 kg/cm2, 156.0 psi)
Max. difference between any two cylinders: 100
kPa (1.0 kg/cm
2, 14.2 psi) 15) Carry out Steps 12) through 14) on each cylinder to
obtain 4 readings.
16) Disconnect negative cable at battery.
17) After checking, install spark plugs and ignition coil assemblies (2) with high-tension cord (3).
18) Connect ignition coil couplers (1).
19) Connect fuel injector wires (4) at the coupler.
20) Install cylinder head upper cover.
21) Install air cleaner assembly and air suction hose referring to “Air Cleaner Components”.
22) Install engine cover.
23) Connect negative cable at battery.
Engine Vacuum CheckS7RS0B1404002
The engine vacuum that develops in the intake line is a
good indicator of the condition of the engine. The
vacuum checking procedure is as follows:
1) Warm up engine to normal operating temperature.
NOTE
After warming up engine, be sure to place
transaxle gear shift lever in “Neutral”, and set
parking brake and block drive wheels.
2) Stop engine and turn off the all electric switches.
3) Remove engine cover.
4) Remove air cleaner assembly and air suction hose referring to “Air Cleaner Components”.
5) Remove PCV hose (1) from PCV valve (2).
(A)
(C)
(B)
I3RH0B140009-01
I2RH0B140005-01
I2RH0B140003-01
2
1
I6RS0B141001-01
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Diagnostic Information and Procedures
Engine Cooling Symptom DiagnosisS7RS0B1604001
ConditionPossible cause Correction / Reference Item
Engine overheats
(Radiator fan operates) Loose or broken water pump belt
Adjust or replace.
Not enough coolant Check coolant level and add as necessary.
Faulty thermostat Replace.
Faulty water pump Replace.
Dirty or bent radiator fins Clean or remedy.
Coolant leakage on cooling system Repair.
Clogged radiator Check and replace radiator as necessary.
Faulty radiator cap Replace.
Improper ignition timing Adjust.
Dragging brakes Adjust brake.
Slipping clutch Adjust or replace.
Poor charge battery Check and replace as necessary.
Poor generation generator Check and repair.
ECT sensor faulty Check and replace as necessary.
Radiator cooling fan relay No.2 and/or
No.3 faulty Check and replace as necessary.
Radiator fan motor faulty Check and replace as necessary.
ECM faulty Check and replace as necessary.
Wiring or grounding faulty Repair as necessary.
Equipped with too much electric load
part(s) Dismount.
Engine overheats
(Radiator fan does not
operate) Fuse blown
Check 30 A fuse of relay/fuse box and check
for short circuit to ground.
Radiator cooling fan relay No.1 faulty Check and replace as necessary.
ECT sensor faulty Check and replace as necessary.
Radiator cooling fan motor faulty Check and replace as necessary.
Wiring or grounding faulty Repair as necessary.
ECM faulty Check and replace as necessary.
Downloaded from www.Manualslib.com manuals search engine 1I-1 Starting System:
Engine
Starting System
Schematic and Routing Diagram
Cranking System Circuit DiagramS7RS0B1902001
Diagnostic Information and Procedures
Cranking System Symptom DiagnosisS7RS0B1904001
Possible symptoms due to starting system trouble would be as follows:
• Starting motor does not run (or runs slowly)
• Starting motor runs but fails to crank engine
• Abnormal noise is heard
Proper diagnosis must be made to determine exactly where the cause of each trouble lies in battery, wiring harness,
(including starting motor switch), starting motor or engine.
Do not remove motor just because starting motor does not run. Check the following items and narrow down scope of
possible causes.
1) Condition of trouble
2) Tightness of battery terminals (including ground cable connection on engine side) and starting motor terminals
3) Discharge of battery
4) Mounting of starting motor
I4RS0A190001-01
1. Pinion drive lever 6. Magnetic switch contacts 11. Ignition & Starter switch
2. Pinion & Over-running clutch 7. Pull-in coil 12. Battery
3. Magnetic switch 8. Starting motor 13. To ECM
4. Hold-in coil 9. Starting motor control relay
5. Plunger 10. A/T: Transmission range switch (shift lever switch)
Downloaded from www.Manualslib.com manuals search engine Starting System: 1I-2
ConditionPossible cause Correction / Reference Item
Motor not running (No
operating sound of
magnetic switch) Shift lever switch is not in P or N, or not
adjusted (A/T)
Shift in P or N, or
adjust switch. (A/T)
Battery run down Recharge battery.
Battery voltage too low due to battery
deterioration Replace battery.
Poor contact in battery terminal
connection Retighten or replace.
Loose grounding cable connection Retighten.
Fuse set loose or blown off Tighten or replace.
Poor contacting action of ignition switch
and magnetic switch Replace.
Lead wire coupler loose in place Retighten.
Open-circuit between ignition switch and
magnetic switch Repair.
Open-circuit in pull-in coil Replace magnetic switch.
Brushes are seating poorly or worn
down Repair or replace.
Poor sliding of plunger and/or pinion Repair.
Faulty starting motor control relay “Main Relay, Fuel Pump Relay and Starting
Motor Control Relay Inspection in Section 1C”.
Faulty ECM and its circuit “Inspection of ECM and Its Circuits in Section
1A”.
Motor not running
(Operating sound of
magnetic switch heard) Battery run down
Recharge battery.
Battery voltage too low due to battery
deterioration Replace battery.
Loose battery cable connections Retighten.
Burnt main contact point, or poor
contacting action of magnetic switch Replace magnetic switch.
Brushes are seating poorly or worn
down Repair or replace.
Weakened brush spring Replace.
Burnt commutator Replace armature.
Layer short-circuit of armature Replace.
Crankshaft rotation obstructed Repair.
Starting motor running
but too slow (small
torque) (If battery and
wiring are satisfactory,
inspect starting motor) Insufficient contact
of magnetic switch
main contacts Replace magnetic switch.
Layer short-circuit of armature Replace.
Disconnected, burnt or worn
commutator Repair commutator or replace armature.
Worn brushes Replace brush.
Weakened brush springs Replace spring.
Burnt or abnormally worn end bush Replace bush.
Starting motor running,
but not cranking engine Worn pinion tip
Replace over-running clutch.
Poor sliding of over-running clutch Repair.
Over-running clutch slipping Replace over-running clutch.
Worn teeth of ring gear Replace flywheel (M/T) or drive plate (A/T).
Noise Abnormally worn bush Replace bush.
Worn pinion or worn teeth of ring gear Replace over-running clutch, flywheel (M/T) or
drive plate (A/T).
Poor sliding of pinion (failure in return
movement) Repair or replace.
Worn internal or planetary gear teeth Replace.
Lack of oil in each part Lubricate.
Starting motor does not
stop running Fused contact points of magnetic switch
Replace magnetic switch.
Short-circuit between turns of magnetic
switch coil (layer short-circuit) Replace magnetic switch.
Failure of returning action in ignition
switch Replace.
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Engine
Charging System
General Description
Battery DescriptionS7RS0B1A01001
The battery has three major functions in the electrical
system.
• It is a source of electrical energy for cranking the engine.
• It acts as a voltage stabilizer for the electrical system.
• It can, for a limited time, provide energy when the electrical load exceeds the output of the generator.
Carrier and Hold-Down
The battery carrier should be in good condition so that it
will support the battery securely and keep it level. Before
installing the battery, the ba ttery carrier and hold-down
clamp should be clean and free from corrosion and
make certain there are no parts in carrier.
To prevent the battery from shaking in its carrier, the
hold-down bolts should be tight enough but not over-
tightened.
Electrolyte Freezing
The freezing point of electrolyte depends on its specific
gravity. Since freezing may ruin a battery, it should be
protected against freezing by keeping it in a fully
charged condition. If a battery is frozen accidentally, it
should not be charged until it is warmed.
Sulfation
If the battery is allowed to stand for a long period in
discharged condition, the lead sulfate becomes
converted into a hard, cryst alline substance, which will
not easily turn back to the active material again during
the subsequent recharging. “Sulfation” means the result
as well as the process of that reaction. Such a battery
can be revived by very slow charging and may be
restored to usable condition but its capacity is lower than
before. Built-In Indicator (If Equipped)
The battery has a built-in temperature compensated
indicator in the top of the battery. This indicator is to be
used with the following diagnostic procedure. When
checking the indicator, make sure that the battery has a
clean top. A light may be needed in some poorly-lit
areas.
Three types of indication available under normal
operation are as follows.
•
Green dot
Battery is sufficiently charged for testing.
• Dark
Battery must be charged before testing. If there is a
cranking complaint, battery should be tested as
described in “Battery Inspection”. Charging and
electrical systems should also be checked at this time.
• Clear
This means that fluid level is below the bottom of
hydrometer. Its possible cause is excessive or
prolonged charging, a broken case, excessive tipping
or normal battery deteriorat ion. When the battery is
found in such condition, it is possible that high
charging voltage is caused by the faulty charging
system and therefore, charging and electrical systems
need to be checked. If there is a trouble in cranking
and its cause lies in the battery, it should be replaced.
I2RH011A0001-01
Downloaded from www.Manualslib.com manuals search engine Charging System: 1J-3
Charging System Circuit
The generator features solid state regulator that it mounted inside the generator. All regulator components are
enclosed into a solid mold, and this unit along with the brus h holder assembly is attached to the rear housing. The
regulator voltage is being controlled by ECM under some cond itions while driving. Refer to “Generator Control System
Description in Section 1A”.
The generator rotor bearings contain enough grease to eliminate the need for periodic lubrication.
Two brushes carry current through the two slip rings to the field coil mounted on the rotor, and under normal conditions
will provide long period of attention-free service.
The stator windings are assembled inside a laminate d core that forms part of the generator frame.
A rectifier bridge connected to the stator windings contains diodes, and electrically changes the stator AC. voltages to
a D.C. voltage which appears at the generator output terminal.
I5JB0A1A0005-01
1. Generator 4. Diode7. Main switch
2. I.C. regulator 5. Field coil (rotor coil)8. Battery
3. Stator coil 6. Charge indicator light9. ECM
Downloaded from www.Manualslib.com manuals search engine 1J-4 Charging System:
Diagnostic Information and Procedures
Battery InspectionS7RS0B1A04001
Common Causes of Failure
A battery is not designed to last indefinitely; however, with proper care, it will provide many years of service. If the
battery performs satisfactorily during te st but fails to operate properly for no apparent reason, the following are some
factors that may point to the cause of trouble:
• Accessories left on overnight or for an extended period without the generator operating.
• Slow average driving speeds for short periods.
• Electrical load exceeding generator output partic ularly with addition of aftermarket equipment.
• Defects in charging system such as high resistance, s lipping drive belt, loose generator output terminal, faulty
generator or voltage regulator, Refer to “Generator Symptom Diagnosis”.
• Battery abuse, including failure to keep battery cable terminals clean and tight or loose battery hold down.
• Mechanical problems in electrical sys tem such as shorted or pinched wires.
Visual Inspection
Check for obvious damage, such as cracked or broken case or cover, that could permit loss of electrolyte. If obvious
damage is noted, replace battery. Determine cause of damage and correct as needed.
Generator Symptom DiagnosisS7RS0B1A04002
CAUTION!
• Do not mistake polarities of “IG” terminal and “L” terminal.
• Do not create short circuit between “IG” and “L” terminals. Always connect these terminals through a lamp.
• Do not connect any load between “L” and “E” terminals.
• When connecting charger or booster battery to vehicle battery, refer to “Jump Starting in Case of Emergency”.
Trouble in charging system will show up as one or more of the following conditions:
1) Faulty indicator lamp operation.
2) An undercharged battery as evidenced by slow cranking or indicator dark.
3) An overcharged battery as evidenced by ex cessive spewing of electrolyte from vents.
Condition Possible cause Correction / Reference Item
Noisy generator Loose drive belt Adjust or replace drive belt.
Loose drive belt pulley Tighten by specified torque.
Loose mounting bolts Tighten by specified torque.
Worn or dirty bearings Replace.
Defective diode or stator Replace.
Charge light does not
light with ignition ON and
engine off Fuse blown
Replace fuse and check for shorted circuit.
Indicator lamp (LED) faulty Replace combination meter.
Wiring connection loose Tighten loose connection.
IC regulator or field coil faulty Replace.
Poor contact between brush and slip
ring Repair or replace.
Charge light does not go
out with engine running
(battery requires frequent
recharging) Drive belt loose or worn
Adjust or replace drive belt.
IC regulator or generator faulty Replace.
Wiring faulty Repair wiring.
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Generator Test (Undercharged Battery Check)S7RS0B1A04003
This condition, as evidenced by slow cranking or
indicator clear with dark or light yellow dot can be
caused by one or more of the following conditions even
though indicator lamp may be operating normal.
The following procedure also applies to cars with
voltmeter and ammeter.1) Make sure that undercharged condition has not been caused by accessories left on for extended period of
time.
2) Check drive belt for proper tension.
3) If battery defect is suspected, refer to “Battery Description”.
4) Inspect wiring for defects. Check all connections for tightness and cleanliness, battery cable connections
at battery, starting motor, ignition ground cable and
no “C” terminal circuit at ground.
5) Connect switch (6), load (5), battery (4), voltmeter (3) and ammeter (2) to generator (1) as shown in
figure.
Voltmeter: Set between generator “B” terminal
and ground.
Ammeter: Set between generator “B” terminal
and battery (+) terminal.
NOTE
Use fully charged battery.
6) Measure current and voltage.
No-Load Check 1) Run engine from idling up to 2000 rpm and read meters.
NOTE
Turn off switches of all accessories (wiper,
heater etc.).
Specification for undercharged battery (No-load
check)
Current: 10 A
Voltage: 14.2 – 14.8 V (at 20 °C, 68 °F)
NOTE
Consideration should be taken that voltage
will differ somewhat with regulator case
temperature as shown in figure.
2) Using service wire, ground “C” terminal (1) of
generator.
3) Measure voltage between “B” terminal of generator and body ground.
Voltage: 12.5 – 13.1 V (at 20 °C, 68 °F)
• If voltage is higher than standard value
If voltage is higher than standard value, check ground
of brushes.
If brushes are not grounded, replace IC regulator.
If voltage is lower than standard value, proceed to the
following check.
Load Check 1) Run engine at 2000 rpm and turn on head light and blower motor.
2) Measure current. If measure current is less than 30 A, repair or
replace generator.
IYSQ011A0007-01
[A]: Regulated voltage (V)
[B]: Heat sink temperature ( °C)
16.0
15.5
15.0
14.5
14.0
13.5
13.0
-30 0 20
[A]
[B]
68
22120 (˚C)
248 (˚F)
(V)
I6RS0B1A1002-01
I5JB0A1A0011-01