2g Turbo Vacuum Line Info

8/8/2019 2g Turbo Vacuum Line Info

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ENGINE AND EMISSION CONTROL - Emission ~ontro~System2.0L Engine (Turbo) and, 2.41 Engines $17.59EMISSION CONTROL SYSTEM (. .r.f3olxllooGENERAL INFORMATION

The emission control system consists of the following sub-systems:l

Positive crankcase ventilation systeml Evaporative emission control systeml Exhaust emission control system

SERVICE SPECIFICATIONS 17300000050

ItemsEvaporative emission purge solenoid coil resistance[at 20C(68oF)] R

Standard value

36-44

EGR solenoid coil resistance [at 20C (68OF)J Q 36-44SPECIAL TOOL 17300060018

Tool Tool number and name Supersession Application

MB991 700 Checking the purge controlsystem

TROUBLESHOOTING

Symptom Probable cause Remedy

Engine will not start or Vacuum hose disconnected or damaged. Repair or repl,aceis hard to start.

The EGR valve is not closed. Repair or replace

Malfunction of the evaporative emission purge Repair or replacesolenoid.

Rough idle or enginestalls.

The EGR valve is not closed.

Vacuum hose disconnected or damaged.

Malfunction of the positive crankcase ventilationvalve.

Repair or replace

Repair or replace

Replace

Malfunction of the purge control system.

Engine hesitates orpoor acceleration.

Excessive oil con-sumption.

Poor fuel mileage.

Malfunction of the exhaust gas recirculationsystem.

Positive crankcase ventilation line clogged.

Malfunction of the exhaust gas recirculationsystem.

Check the system; if there ts a prob-lem, check its component+ parts.Check the system; if there is a prob-lem, check its component parts.Check positive crankcase ventilationsystem.

Check the system: if there is a prob-lem, check its component parts.

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17-60 ENGINE AND EMI!SSION CONTROL EmissionControl 'ystem- VACUUM HOSES

VACUUM HOSE ROUTING

To evaporative emission(EVAP) canister

tEGR solenoid Evaporative emission Fuel pressure\ (EVAP) purge solenoid solenoidI I

Purge control I valve

By-pass valve\ Y!i- Fuel pressure regulator

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Turbocharge;waste Turbocharger wastegate solenoid r-l gate actuator

Front

L: Light BlueR: Red9: BlackG: GreenY YellowW: White

A6EM0456


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17-62 ENGINE AND EMISSION CONTROL -mission Co;troiSystemVACUUM CIRCUIT DIAGRAM

intake air plenum Throttle body L: Light BlueR: RedB: Black

G: GreenY: YellowW: White

To combustionchamber G 7 --3

3

Check valve

1EVAP purg&oienoid(ON: open)

11

EVAP canister

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Air cleaner

-03Turbocharger waste ;fgate actuafor

Turbochargerwaste

?ate solenoidON: open)

A6EM0457


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17-64 ENGINE AND EMISSION CONTROL Emission Controi SystemPOSITIVE CRANKCASE VENTILATION SYSTEM 17300500070

GENERAL INFORMATIONThe positive crankcase ventilation system (PCV)prevents the escape of blow-by g,sses from insidethe crankcase into the atmosphere.Fresh air is sent from the air cleaner into the crank-case through the breather hose, to be mixed withthe blow-by gases inside the crankcase.The blow-by gas inside the crankcase is drawninto the intake manifold through the positive crank-case ventilation valve.

The plunger inside the positive crankcase ventila-tion valve is designed to lift according to intakemanifold vacuum, regulating the flow of blow-by.The blow-by gas flow is decreased during low loadengine operation to maintain engine stability, andis increased during high load operation to improvethe ventilation performance.

SYSTEM DIAGRAM

Breather hose

Positive crankcaseventilation valve

6EM0456

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ENGINE AND EMISSION CONTROL - Emission Control Syptem ,.., I q


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17-66 ENGINE AND EMISSION CONTROL Emission lContro'System CRANKCASE VENTILATION SYSTEM CHECK

1.

2.

3.

4.5.

17900110198

Remove the positive crankcase ventilation (PCV) valvefrom the rocker cover, then reconnect the PCV valveto the vacuum supply hose (ventilation hose).With the engine idling, put finger on the open end ofthe PCV valve, and check for negative pressure (vacuum)with finger.

NOTEAt this time, the plunger in the PCV valve should moveback and forth as the open end is covered and uncovered.

If negative pressure is not felt, clean or replace the PCVvalve. Inspect the vacuum supply hose and vacuum supplyhose port for restriction or plugged condition.Install the PCV valve.Tighten it to the specified torque. Specified torque: 10 Nm (7.2 ft.lbs.)

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ENGINE AND EMISSION CONTROL - Eission contro System2.0L Engme (Turbo) and 2.4L @ngine> ,d 7i67

Thin stick(Extremely light)

Vacuum side

t 6EU0532

Thin stick~.gt~me~y

PCV valve

E:~+ 6EM0529

POSITIVE CRAN.KCASE VENTILATION VALVECHECK i73ooi2oi1; Hold the PCV valve with the vacuum side fadngd&b;

Using light pressure depress the PCV valve spring wfihI the thin stick 5-10 mm. Release pressure on .ththe sticto see if the PCV valve spring will lift the. stick to itoriginal position.

2. If the stick returns quickly to its original position, the;PCVvalve is OK. If the stick does not return quickly, Cleanor replace the PCV valve.

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17-68 ENGINE AND EMISSION CONTROL Emission Contra system


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ENGINE AND E,lSSlON CONTROL _ Emissio? ?-! System


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17-70 ENGINE AND EMl!jSION CONTROL -mission Contr;SystemPURGE CONTROL SYSTEM CHECK (PURGE FLOW CHECK) 1 7 2 0 0 1 4 0 2 6 5

Intake manifold plenum

EVAP purgesolenoid(ON: OPEN)

Nipple A,Purgecontrol

valve

Check valveAir cleaner

Air intake hose

Purge flowindicator(MB991 700)

6EM0555

1. Disconnect the purge hose from the evaporative emission(EVAP) canister, and connect the special tool (purge flowindicator) between the EVAP canister and the purge hose.

2. The vehicle should be prepared as follows before theinspection and adjustment.l Engine coolant temperature: 80-95C (176-203 F)l Lights, cooling fan and accessories: OFFl Transaxle: Neutral (A/T for P range)

3. Run the engine at idle for 3 minutes or more.

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ENGINE AND EMISSION CONTROL - !f~~~~~g~$@$f!!~n~ 2,4c En&&ly-714. Check the purge ,flow v&me when sudden:brakif@ is

carried out several times. -L-s /.,,i, ) .Standard value: Momentarily 20 cmhec. (2.5 SCFH

or more

5. If the purge flow volume is less thah the standard valuecheck it again with the vacuum hose disconnected fromthe EVAP canister.

If the purge flow volume is below the standard valuescheck for blockages in the vacuum port and vacuum hoseand also check the evaporative emission purge solenoidand the purge control valve.If the purge flow volume is at the standard value, replacethe EVAP canister.

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17-72 ENGINE AND EMl$;SI()N CONTROL -mission contro; Syst;;PURGE CONTROL SYSTEIM CHECK (PURGE FLOW CHECK) 17300140272

Intake yanifold plenumThrottle body

From air cleaner

OFF

tON

EVAP purgesolenoid

(ON: OPEN)

I II I

hose I II IL_I

Purge flowindicator(MB991700)

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EVAP canister

6EM05341. Disconnect the purge hose from the evaporative emission

(EVAP) canister, and connect the special tool (purge flowindicator) between the EVAP canister and the purge hose.

2. The vehicle should be prepared as follows before theinspection and adjustment.l

Engine coolant temperature: 80-95C (176-203F)l Lights, cooling fan and accessories: OFFl Transaxle: Neutral (A/T for P range)

3. Run the engine at idle for 4 minutes or more.


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ENGINE AND EMISSION CONTRPL - ~$&$2.4L Enl)inaSjb~i a. 2I 4. Check the purge flow ,volume, when sudden +rakirvg

carried out several times. :Sthd&d value: Mom/Warily%Jch&ec. (2.5 SCFHbr more ,. , ; __ -1 ,^

5. If the purge flow, volume is less than the s&d&d valucheck it again with the va,$uum hose disco$qcted fromthe EVAP canister.

If the purge flow volume iabelW the standard v&escheck for blockages in the vacuum portandva;cuuMbseand also check the evaporative MWsion pulgesofenoidand the purge control valve.If the purge flow volume is at the .standard value, replacthe EVAP canister. I .\~ 7

(. ,::*.

,-

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17-74 ENGINE AND EMllSSlON CONTRdL Emission~Contm system

Vacuum

i *Enginespeed (r/min)

3FU202

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VacuumA

Engine speed (r/min)3FU262 I

PURGE .PORT VACUUM CHECK 1 7 3 0 0 1 5 0 2 1 31. Disconnect the vacuum hose from the throttle body purge

vacuum nipple and connect a hand vacuum pump tothe nipple.

2. Vacuum is kept constant despite the increased enginespeed.

NOTEIf no vacuum is generated, the throttle body purge portmay be clogged.

1. Disconnect the vacuum hose from the intake manifold

purge vacuum nipple and connect a hand vacuum pumpto the nipple.

2. Vacuum is kept constant despite the increased enginespeed.

NOTEIf no vacuum is generated, the intake manifold purgeport may be clogged.


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ENGlNE A,ND EMISSION~ CONTROL _ Emission +?rol System

6 E M0 5 3 7

.EVAPORATIVE EMISSION PURGE --SOLENOIDCHECK

\.- 1 7 3 0 0 1 7 0 2

NOTEWhen disconnecting the vacuum hose, place an .identificatiomark on it ,for proper reconnection.1. Disconnect the vacuum hose from the solenoid valve2. Disconnect the harness connector.

3. Connect a hand vacuum pump to nipple (A) of the solenovalve (refer to the illustraqon at left).4. Check air-tightness by applying a vacuum with voltag

applied directly from the battery to the purge control solnoid. valve. .-

Battery voltage

Applied

Not applied

NormalccjnditionVacuum leaks -..Vacuum ri-rair&inedl8, , .

5. Measure the resistance between the terminals of thsolenoid valve.

Standard value: 36-44 n [at 20C(68F)]

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17-76 ENGINE AND EMl!jSION CONTROL -Emission Contra System2.0L Engme (Turbo) and 2.4L Engine>

3 EM1 6 5

Valve -

3 EM1 6 6

PURGE CONTROL VALVE 1 7 3 0 0 1 6 0 0 2 6

1. Remove the purge control valve.2. Connect a hand vacuum pump to the vacuum nipple

of the purge control valve.

3. Apply a vacuum of 53 kPa (16 in.Hg.) and check airtight-ness.

4. Blow in air lightly from the evaporative emission canisterside nipple and check conditions as follows.

Hand vacuum pump vacu-um

Normal conditionI

0 kPa (0 in.Hg.) (No vacuum Air does not blow throughis applied)

27 kPa (8.0 in.Hg) or more Air blow through5. Connect a hand vacuum pump to the positive pressure

nipple of the purge control valve.6. Apply a vacuum of 53 kPa (16 in.Hg) and check airtight-

ness.

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VOLUME AIR FLOW SENSOR, ENGINE COOLANTTEMPERATURE SENSOR AND INTAKE AIRTEMPERATURE SENSOR 1 7 3 6 6 1 ~ 1 2 0

Refer to GROUP 13A - Troubleshooting.

AIR CONDITIONING SWITCH 1 7 3 0 0 2 0 0 0 4 6

Refer to GROUP 55 - Air Conditioning Switch.


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ENGINE AN,, E,,,,lSSlO,,, CONTROL _ Emission ??nroi.Sy?t~~EVAPORATIVE EMISSION CANISTER/FUEL TANK PRESSURERELIEF VALVE/PURGE CONTROL VALVE

REMOVAL AND INSTALLATION

I fPre-removal and Post-installation OperationBattery Removal and Installation

Removal steps1. Battery bracket2. Shift cable and select cable con-

nection3. Vapor hose4. Connector5. Vapor hose.A+ 6. Fuel tank pressure relief valve7. Vapor hose

8. Vapor hose9. Check valve

1 0 . C l a m p il .,Purge hose12. Purge control .valve13. Evaporative .emission canister14. Evaporative emission canister hoid-

e r a s s e m b l y_.

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17-78 ENGINE AND EMISSION CONTROL Emission Contro System

and Post-installation OperationSplash Shield (R.H.) Removal and installation (Re-fer to GROUP 42 - Fender)

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Removal steps

1. Evaporative emission ventilation2. Vent hose3. Vent hose4. Connector5. Vent hose6. Vapor hose7. Connector8. Evaporative emission purge hose9. Vapor hose

5Am= 4

VacuumA

wEnginespeed (r/min)

3FU262

EGR PORT VACUUM CHECK

1. Disconnect the vacuum hose (white stripe , green stripe ) from the throttlebody EGR vacuum nipple. Connect a hand vacuum pumpto the nipple.

2. Start the engine and gradually raise the speed. The vacu-um reading on the pump should remain constant.NOTEIf no vacuum is generated, the throttle body purge portmay be clogged.

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2g Turbo Vacuum Line Info

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