TOYOTA CAMRY V20 1986 Service Information

Resistance of ECU Wiring Connectors (2VZ±FE)
Coolant temp. 80°C (176°F)
Measuring plate fully closed
Intake air temp. 20°C (68°F)
Measuring plate fully open
Throttle valve fully closed
Throttle valve fully closed Throttle valve fully openSTD resistance (


Throttle valve open TerminalsCondition
± EFI SYSTEMElectronic Control System (Electronic Controlled Unit(ECU))
FI±136

Fuel Cut RPM
INSPECTION OF FUEL CUT RPM
1. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
2. INSPECT FUEL CUT RPM
(a) Disconnect the connector from the throttle position sensor.
(b) Connect terminals IDL and E1 (3S±FE (w/o ECT)) or E2
(others) of the wiring connector.
(e) Gradually raise the engine rpm and check that there is fluctua-
tion between the fuel cut and fuel return points.
HINT:
wThe vehicle should be stopped.
wMeasure with the A/C OFF.
Fuel cut rpm: 3S±FE 1,500 ± 2,100 rpm
2VZ±FE 1,800 rpm
Fuel return rpm: 3S±FE 1,000 rpm
2VZ±FE 1,200 rpm
± EFI SYSTEMElectronic Control System (Fuel Cut RPM)FI±137

EMISSION CONTROL SYSTEMS
± EMISSION CONTROL SYSTEMS (3S±FE)EC±1

Reduced blow±by gas (HC)
Reduced evaporative HC
Reduces NOx
Reduces HC
1 CO and NOx
Regulates all engine conditions for reduction of
exhaust emissions.
Remarks *For inspection and repair of the EFI system, refer to the EFI section of this manual.Positive crankcase ventilation
Fuel evaporative emission control
Exhaust gas recirculation
Three±way catalyst
Electronic fuel injection*
SYSTEM PURPOSE
PCV
EVAP
EGR
TWC
EFI Abbreviation
Purpose System
± EMISSION CONTROL SYSTEMS (3S±FE)System PurposeEC±2

COMPONENT LAYOUT AND SCHEMATIC DRAWING
± EMISSION CONTROL SYSTEMS (3S±FE)Component Layout and Schematic DrawingEC±3

INSPECTION OF PCV HOSE AND
CONNECTIONS
VISUALLY INSPECT HOSE AND CONNECTIONS
Check for cracks, leaks, or damage.
POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM
To reduce HC emission, crankcase blow±by gas (HQ is routed to the intake manifold for combustion in the cylinders.
± EMISSION CONTROL SYSTEMS (3S±FE)Positive Crankcase Ventilation (PCV) SystemEC±4

INSPECTION OF FUEL VAPOR
LINES, FUEL TANK AND TANK CAP
1. VISUALLY INSPECT LINES AND CONNECTIONS
Look for loose connections, sharp bends or damage.
2. VISUALLY INSPECT FUEL TANK
Look for deformation, cracks or fuel leakage.
3. VISUALLY INSPECT FUEL TANK CAP
Check if the cap and/or gasket are deformed or damaged if
necessary, repair or replace. the cap.
To reduce HC emission, evaporated fuel from the fuel tank is routed through the charcoal canister to the intake manifold for
combustion in the cylinders.
FUEL EVAPORATIVE EMISSION CONTROL (EVAP) SYSTEM
HC from canister is led into air
intake chamber.NC from tank is absorbed into
the canister.
HC from tank is absorbed into
the canister.
Air is led into the fuel tank. Throttle Valve
OpeningEvaporated Fuel (HO
High pressure
in tankAbove
54°C(129° F )
High vacuum
in tankBelow
35°C (95°F)Canister Check Valve
Check
Valve in
Cap Coolant
Temp.
svsv
± EMISSION CONTROL SYSTEMS (3S±FE)Fuel Evaporative Emission Control (EVAP) SystemEC±5

5. CLEAN FILTER IN CANISTER
Clean the filter by blowing 3 kg/cm2 (43 psi, 294 kPa) of
compressed air into the tank pipe while holding the other up-
per canister pipe closed.
HINT:
wDo not attempt to wash the canister.
wNo activated carbon should come out.
6. REINSTALL DUST COVER TO CHARCOAL CANISTER
7. REINSTALL CHARCOAL CANISTER
INSPECTION OF BVSV
CHECK BVSV BY BLOWING AIR INTO PIPE
(a) Drain the coolant from the radiator into a suitable
container.
(b) Remove the BVSV.
(c) Cool the BVSV to below 35
°C (95°F) with cool water.
(d) Blow air into a pipe and check that the BVSV is closed. 4. CHECK FOR CLOGGED FILTER AND STUCK CHECK
VA LV E
(a) Using low pressure compressed air, blow into the tank pipe
and check that air flows without resistance from the other
pipes.
(b) Slow into the purge pipe and check that air does not flow
from the other pipes.
If a problem is found, replace the charcoal canister.
(e) Heat the BVSV to above 54°C (129°F) with hot water.
(f) Blow air into a pipe and check that the BVSV is open.
If a problem is found, replace the BVSV.
(g) Apply adhesive to two or three threads of the BVSV, and re-
install.
Adhesive: Part No. 08833±00070, THREE BOND
1324 or equivalent
(h) Refill the radiator with coolant.
INSPECTION OF CHARCOAL
CANISTER
1. REMOVE CHARCOAL CANISTER
2. REMOVE DUST COVER FROM CHARCOAL CANISTER
3. VISUALLY INSPECT CHARCOAL CANISTER
Look for cracks or damage.
± EMISSION CONTROL SYSTEMS (3S±FE)Fuel Evaporative Emission Control (EVAP) SystemEC±6

INSPECTION OF JET (M/T only)
CHECK JET BY BLOWING AIR FROM EACH SIDE
Check for stoppage.
± EMISSION CONTROL SYSTEMS (3S±FE)Fuel Evaporative Emission Control (EVAP) SystemEC±7

EXHAUST GAS RECIRCULATION (EGR) SYSTEM
± EMISSION CONTROL SYSTEMS (3S±FE)Exhaust Gas Recirculation (EGR) SystemEC±8