Table 3Section 2 Removal of the Engine Assembly from the Vehicle1. Avoid petrol overflowing (Disconnect from the fuel tank).
2. Remove the front wheel.Figure 1-5Engine AssemblyRemoval of the Engine Assembly from the Vehicle3-5CO
Normal
Low
HighHC
High
High
HighProblems
Bad idle speed
Bad idle speed
(HC reading fluctuates)
Bad idle speed
(Black smoke exhausts)Causes
1. Ignition fault:
Incorrect ignition timing;
Dirt, short circuit, or incorrect spark plug gap.
2. Incorrect valve gap.
3. Suction and exhaust valve leak.
4. Cylinder leaks.
1. Vacuum leaks.
PCV pipe . manifold;
Idle speed control valve;
Brake booster pipeline.
2. Spark lacks since the mixed gas is too thin.
1. Air filter is blocked.
2. PCV valve is blocked.
3. EFI system fails.
ECU fails.
Pressure regulator of fuel oil is out of order.
Water temperature sensor does not work.
Suction pressure/temperature sensor fails.
Injector fails.
The throttle position sensor fails.3. Discharge the coolant completely.
4. Remove the air filter assembly with hose (see Figure 1-5).
(1) Disconnect the joint of the temperature sensor and the wire
plug.
(2) Disconnect the vent duct from the hose of the air filter.
(3) Release the wire clip bolt on the air filter.
(4) Disconnect the hose of the air filter from the throttle body.
(5) Remove 3 bolts and the air filter assemblies.
5. Remove the battery.
6. Remove the fuel pipe sub-assembly.
7. Disconnect the water pipe; disconnect the water outlet pipe of the
heater from the air conditioner pipe.
8. Release the nut and remove the accelerator control cable. -
Section 3 Drive Belt Replacement1. Remove the V-belt of the generator (see Figure 1-9).
(1) Release bolts A and B.
(2) Release the bolt C and remove the V-belt.
2. Remove the V-belt (from the air conditioner compressor to the
crankshaft sheave (see Figure 1-10).
(1) Release the nut A.
(2) Release the bolt B, and remove the V-belt.
3. Remove the belt of the water pump.
Release bolts A and B, and remove V-belt.
4. Mount the V-belt of the water pump.
Mount the V-belt on the sheave briefly.
5. Adjust the V-belt of the steering pump (see Figure 1-11).
(1) Adjust the tension of the power steering belt, and fasten the
bolt B.
(2) Fasten the bolt A.
Torque: 39N.mFigure 1-9
Figure 1-10
Figure 1-11Engine AssemblyDrive Belt Replacement3-76. Mount No.1 V-belt (from the air conditioner compressor to the crankshaft sheave). (See Figure 1-10).
7. Adjust No.1 V-belt (from the air conditioner compressor to the crankshaft sheave).
(1) Adjust the tension of the belt of the air conditioner by fastening the bolt B.
(2) Fasten the nut A. Torque: 39N.m.
8. Mount the V-belt of the generator (see Figure 1-9).
9. Adjust the V-belt of the generator.
Fasten the bolt A, and then the bolt B.
Torque: 18N.m for bolt A, 58N.m for bolt B.
10. Check distortion and tension of the driving belt. -
Component ViewFigure 2-3Engine MechanicalEngine Components3-10adjusting support
with power steering
Vane pump assembly with
power steering
Pump support with
power steeringHex. flange
bolt M6¡Á50
Ignition coil
Ignition coilinstallation bracket
Bolt M8¡Á31Fuel oil pipe subassembly
Fuel oil pipe clip
Vent ductSecondary wireBypass hose
Rear end housingWater outlet
pipe housing
No.1 heat shield of
exhaust manifoldOil filter assembly
Washer
Exhaust manifold
Support of exhaust
manifoldO-ring
Fastener of
No.1
injectorInjector
O-ring
Throttle assemblySuction manifold Washer
WasherKnock sensor
Water temperature sensorCrankshaft position sensorGenerator assemblyNo.1 support of compressor
Air conditioner compressorWater inlet pipe housing -
Section 5 Carbon Canister Replacement1. Check and replace the canister.
(1) Check for crack or damage on the canister visually (see Figure 3-13).
(2) Check the operation of the canister.
a. Plug the discharge port (see Figure 3-14).
b. Blow air (4.71KPa, 48kgf/cm2) into the absorption port when keeping the discharge port closed, and the
air should flow out from the exit port.
If the operation is unsatisfactory, replace the canister.
c.Blow air into the absorption port, the air should flow from other ports without any resistance.
If the operation is unsatisfactory, replace the canister.
(3) Clean the canister: Block the desorption port, blow air (4.71KPa, 48kgf/cm2) into the absorption port, and
the air should flow from the discharge port (see Figure 3-15).Fuel SystemCarbon Canister Replacement3-192. Canister control valve (TEV) (see Figure 3-16)
Mounting position: On the vacuum pipeline of the canister - suction manifold.
Faults: Bad idle speed, malfunction, etc.
General cause: Ingress of foreign materials into inside of the valve results in corrosion and Poor tightness.
Maintenance precautions: During maintenance:
1. Air flowing direction must conform to specifications;
2. If the control valve fails due to black particles in the valve body, and it is necessary to replace the control
valve, please check the condition of the canister;
3. Avoid liquid such as water and oil entering into the valve during maintaining as possible;
4. It is advisable to mount the canister control valve on the hose hanging in the air or fasten with soft rubber
to avoid transmission of solid borne noise.Figure 3-13Figure 3-15 Absorption port
Discharge port
Exit port
Plug upFigure 3-14Absorption port
Discharge port
Exit port -
c.Check voltage between terminals
Standard:Rotating wheel 7.5-9V
Below 0.5V0Voltage changes alternativelyCombination Instrument System -Malfunction Symptom Table and Troubleshooting5-11 Result and measures:
Normal, replace combination instrument assy.
Abnormal, repair or replace wiring harness or connector
2. Speedometer fails
Check
(1) Check combination instrument assy.
a. Remove combination instrument assy. , keep connection of connector.
b. Check on state
Check connection between terminals
Standard:Tester connection Conditions Standard condition
C 17- ground Turn ignition switch to ON position 7. 5-9V
Result and measures:
Abnormal, go to (2) Check combination instrument assy. speed input signal
Normal, go to (3) Check combination instrument assy.
(2) Check combination instrument assy. speed input signal
a. Check voltage
Prop up two front wheels
Push transmission lever to neutral position
Turn on ignition switch
turn front wheel slowly, measure the voltage between terminal C15 and terminal C16
Standard voltage is shown in the figure below:
Result and measures:
Normal, replace combination instrument assy.
Abnormal, check speed sensorTester connection Condition Standard condition
C 15-ground Normal ON
Check voltage between terminals
Standard:7.5-9V
0Voltage changes alternatively5-12 b. Check speed sensor
Check on state
Check connection between terminals
Standard:Tester connection Conditions Standard condition
3- ground Turn ignition switch to ON position 7. 5-9VTester connection Condition Standard condition
2- ground Normal ON Result and measures:
Abnormal, repair or replace wiring harness or connector
Normal, check speed sensor output signal
c. Check speed sensor output signal
Check voltage
Prop up two front wheels
Push transmission lever to neutral position
Turn on ignition switch
Turn front wheel slowly, measure the voltage between terminal 1 and terminal 2
Standard voltage is shown in the figure below:
Rotating wheel Below 0.5V
Result and measures:
Normal, repair or replace wiring harness or connector
Abnormal, replace speed sensor
(3) Check combination instrument assy.
a. Remove combination instrument assy. , disconnect connector.
b. Check on status
Check connection between terminals
Standard:
Tester connection Condition Standard condition
C 13- ground Normal ONCombination Instrument System -Malfunction Symptom Table and Troubleshooting
5-13 c. Check voltage between terminals
Standard:Tester connectionConditions Standard condition
C 12- ground Turn ignition switch to ON position 7. 5-9V
Result and measures:
Abnormal, repair or replace wiring harness or connector
Normal, replace combination instrument assy.
3. Tachometer fails
Checkout procedure
(1) Check combination instrument assy. rotating speed input
signal
a. Remove combination instrument assy. , keep connection of
connector.
b. Connect oscillograph to terminal C23 and ground.
c. Start up engine
d. Check signal waveform
Standard:
Display correct waveform
Result and measures:
Normal, check and replace combination instrument assy.
Abnormal, check engine ECU rotating speed output signal
(2) Check engine ECU rotating speed output signal
a. Remove engine ECU ware, keep connection of connector.
b. Connect oscillograph to terminal ECU 8# pin and ground.
c. Start up engine
d. Check signal waveform
Standard:
Display correct waveform
Result and measures:
Normal, repair or replace wiring harness or connector
Abnormal, check revolution speed transducer and engine
control system
4. Water thermometer fails
Circuit diagramCombination Instrument System -Malfunction Symptom Table and Troubleshooting combination instrument assy
combination instrument assy engine ECU
coolant Temperature SensorEngine Speed Signal
coolant Temperature Signal
Tester connection Conditions Standard state
C(60°C)164.5±5 ohm
C 24- ground 1/2C(90°C)56±3 ohm
H(115°C)28.7±2 ohmConditions Standard state
C(60°C)164.5±5 ohm
1/2C(90°C)56±3 ohm
H(115°C)28.7±2 ohm5-14 (1) Use diagnostic instrument to read engine water temperature value
a. Connect diagnostic instrument to diagnostic interface
b. Turn on ignition switch
c. Read water temperature value displayed on diagnostic instrument
Standard: the same as actual engine cooling water temperature
Result and measures:
Normal, water thermometer does not fail
Abnormal, check combination instrument assy.
(2) Check combination instrument assy.
a. Check resistance
Remove combination instrument assy. , disconnect connector.
Check connection between terminals
Standard:
Result and measures:
Normal, replace combination instrument assy.
Abnormal, check water temperature sensor
b. Check water temperature sensor
Remove water temperature sensor and put it in thermostat.
Adjust temperature of thermostat and measure resistance value of water temperature sensor
Standard:
Result and measures:
Normal, repair or replace wiring harness and connector
Abnormal, replace water temperature sensor
5. Fuel gauge fails
Circuit diagramCombination Instrument System -Malfunction Symptom Table and Troubleshooting combination instrument assy
Fuel Sensor
Fuel Signal