coolant TOYOTA CAMRY 2000 Service User Guide

11. DISCONNECT OIL PRESSURE SWITCH
CONNECTOR
12. DISCONNECT ENGINE WIRE (FOR OXYGEN
SENSORS) FROM ENGINE HANGER
13. REMOVE WATER OUTLET
(a) Disconnect the following connectors:
(1) Engine coolant temperature sender gauge con±
nector
(2) Engine coolant temperature sensor connector
(b) Disconnect the following hoses:
(1) Upper radiator hose
(2) Water bypass pipe hose
(3) Heater water hose
(4) IAC water bypass hose
(5) 2 TVV (for EVAP) vacuum hoses
14. REMOVE WATER BYPASS PIPE
(a) Disconnect the following hoses:
(1) IAC water bypass hose
(2) Heater water hose
(3) w/ Oil Cooler:
2 oil cooler water bypass hoses (5) 3 bolts and 2 nuts
(6) Exhaust manifold
(7) Gasket
(8) Retainer
(9) Cushion
(10) WU±TWC
(c) Remove the 2 bolts, water outlet and gasket.
± 5S±FE ENGINEENGINE MECHANICALEG1±44

31. ASSEMBLE EXHAUST MANIFOLD AND WARM UP
THREE±WAY CATALYTIC CONVERTER
Assemble the following parts:
(1) WU±TWC
(2) Cushion
(3) Retainer
(4) Gasket
(5) Exhaust manifold
(6) 3 bolts and 2 nuts
Torque: 29 N±m (300 kgf±cm, 22 ft±lbf)
(c) Connect the following connectors:
(1) Engine coolant temperature sender gauge con±
nector
(2) Engine coolant temperature sensor connector
29. CONNECT ENGINE WIRE (FOR OXYGEN SENSORS)
TO ENGINE HANGER
30. CONNECT OIL PRESSURE SWITCH CONNECTOR
32. INSTALL EXHAUST MANIFOLD AND WARM UP
THREE±WAY CATALYTIC CONVERTER
ASSEMBLY
(a) Install a new gasket, the exhaust manifold and WU ±
TWC assembly with the 6 nuts. Uniformly tighten the
nuts in several passes.
Torque: 49 N±m (540 kgf±cm, 36 ft±lbf)
(7) 2 converter heat insulators
(8) 8 bolts
(9) Manifold lower heat insulator
(10) 3 bolts
± 5S±FE ENGINEENGINE MECHANICALEG1±80

37. A/T:
CONNECT AND ADJUST THROTTLE CABLE
38. CONNECT AND ADJUST ACCELERATOR CABLE
39. FILL WITH ENGINE COOLANT
Capacity:
6.3 liters (6.7 US qts, 5.5 Imp. qts)
40. CONNECT NEGATIVE (±) TERMINAL CABLE TO
BATTERY
41. START ENGINE AND CHECK FOR LEAKS
42. ADJUST IGNITION TIMING
(See page IG ±19 and 38)
Ignition timing:
10
BTDC @ idle
(w/ Terminals TO and E1 connected)
43. PERFORM ROAD TEST
Check for abnormal noise, shock, slippage, correct shift
points and smooth operation.
44. RECHECK ENGINE COOLANT LEVEL AND OIL
LEVEL
± 5S±FE ENGINEENGINE MECHANICALEG1±82

ENGINE REMOVAL
1. DISCONNECT NEGATIVE (±) TERMINAL CABLE
FROM BATTERY
CAUTION: Work must be started after 90 seconds from
the time the ignition switch is turned to the 'LOCK'
position and the negative (±) terminal cable Is discon±
nected from the battery.
2. REMOVE BATTERY AND TRAY
3. REMOVE HOOD
4. REMOVE ENGINE UNDER COVER
5. DRAIN ENGINE COOLANT
6. DRAIN ENGINE OIL
7. DISCONNECT ACCELERATOR CABLE FROM
THROTTLE BODY
8. A/T:
DISCONNECT THROTTLE CABLE FROM
THROTTLE BODY
9. REMOVE AIR CLEANER ASSEMBLY, RESONATOR
AND AIR CLEANER HOSE
(a) Disconnect the intake air temperature sensor connec±
tor.
(b) California only:
Disconnect the air hose from the air cleaner hose.
(c) Loosen the air cleaner hose clamp bolt.
(d) Disconnect the 4 air cleaner cap clips.
(e) Disconnect the air cleaner hose from the throttle
body, and remove the air cleaner cap together with
the resonator and air cleaner hose.
(f) Remove the element.
(g) Remove the 3 bolts and air cleaner case.
10. w/ CRUISE CONTROL SYSTEM:
REMOVE CRUISE CONTROL ACTUATOR
(a) Remove the actuator cover.
(b) Disconnect the actuator connector.
(c) Remove the 3 bolts, and disconnect the actuator with
the bracket.
11. REMOVE RADIATOR
± 5S±FE ENGINEENGINE MECHANICALEG1±85

27. INSTALL AIR CLEANER ASSEMBLY, RESONATOR
AND AIR CLEANER HOSE
(a) Install the air cleaner case with 3 bolts.
(b) Install the element.
(c) Connect the air cleaner hose to the throttle body.
(d) Install the air cleaner cap together with the resonator
and air cleaner hose.
(e) California only:
Connect the air hose to the air cleaner hose.
(f) Connect the intake air temperature sensor connector.
28. A/T:
CONNECT AND ADJUST THROTTLE CABLE
29. CONNECT AND ADJUST ACCELERATOR CABLE
30. FILL WITH ENGINE COOLANT
31. FILL WITH ENGINE OIL
32. CONNECT NEGATIVE (±) TERMINAL CABLE TO
BATTERY
33. START ENGINE AND CHECK FOR LEAKS
34. PREFORM ENGINE ADJUSTMENT
35. INSTALL ENGINE UNDER COVERS
36. INSTALL HOOD
37. PERFORM ROAD TEST
Check for abnormal noises, shock, slippage, correct
shift points and smooth operation.
38. RECHECK ENGINE COOLANT AND ENGINE OIL
LEVELS26. w/ CRUISE CONTROL SYSTEM:
INSTALL CRUISE CONTROL ACTUATOR
(a) Install the actuator and bracket with the 3 bolts.
(b) Connect the actuator connector.
(c) Install the actuator cover.(6) Data link connector 1
(7) 2 ground straps from RH fender apron
(e) Connect the MAP sensor connector.
25. INSTALL RADIATOR
± 5S±FE ENGINEENGINE MECHANICALEG1±133

To reduce NC emissions, evaporated fuel from the fuel tank is routed through the charcoal canister to the intake manifold
for combustion in the cylinders.
EVAPORATIVE EMISSION (EVAP)
CONTROL SYSTEM
NC from tank is absorbed
into the canister
HC from tank is absorbed
into the canister. HC from canister is led
into air intake chamber.
Air is led into the fuel
tank. Positioned above
port P Positioned below
port P Engine Coolant
Temp.Throttle Valve
OpeningEvaporated Fuel (HC)
Above
54
C (129F)Canister Check Valve
High pressure
in tank
High vacuum
in tankBelow
35
C (95F)Check
Valve In
Cap
CLOSED
CLOSED
CLOSEDCLOSED CLOSED
OPEN
OPEN OPEN OPEN
OPEN TVV
± 5S±FE ENGINEEMISSION CONTROL SYSTEMSEG1±149

4. REINSTALL TVV
(a) Apply adhesive to 2 or 3 threads of the TVV, and
install it.
Adhesive:
Part No. 08833±00070, THREE BOND 1324
or equivalent
Torque: 29 N±m (300 kgf±cm, 22 ft±lbf)
(b) Reconnect 2 vacuum hoses.
5. REFILL WITH ENGINE COOLANT
CHECK VALVE INSPECTION
INSPECT CHECK VALVE
(a) Check that air flows from the yellow port to the black
port.
(b) Check that air does not flow from the black port to the
yellow port.
If operation is not as specified, replace the check
valve.
TVV INSPECTION
1. DRAIN ENGINE COOLANT
2. REMOVE TVV FROM WATER INLET HOUSING
(a) Disconnect the following hoses:
(1) Vacuum hose (from throttle body)
(2) Vacuum hose (from charcoal canister)
(b) Remove the TVV.
3. INSPECT TVV OPERATION
(a) Cool the TVV to below 35C (95F) with cool water.
(b) Check that air does not flow from the upper port to
lower port.
(c) Heat the TVV to above 54C (129F) with hot water.
(d) Check that air flows from the upper port to lower port.
If operation is not as specified, replace the TVV.
± 5S±FE ENGINEEMISSION CONTROL SYSTEMSEG1±151

EGR SYSTEM INSPECTION
1. CHECK AND CLEAN FILTER IN EGR VACUUM
MODULATOR
(a) Check the filter for contamination or damage.
(b) Using compressed air, clean the filter.
HINT: Install the filter with the coarser surface facing
the atmospheric side (outward).
2. PREPARATION
Using a 3±way connector, connect a vacuum gauge
to the hose between the EGR valve and VSV.
3. CHECK SEATING OF EGR VALVE
Start the engine and check that the engine starts and
runs at idle.
6. CHECK VSV AND EGR VACUUM MODULATOR
WITH HOT ENGINE
(a) Warm up the engine.
(b) Check that the vacuum gauge indicates low vacuum
at 2,500 rpm. 5. CHECK VSV
(a) The engine coolant temperature should be below
60
C (140
F) (A/T) or 55
C (131
F) (M/T).
(b) Check that the vacuum gauge indicates zero at 2.500
rpm. 4. CONNECT TERMINALS TE1 AND E1
Using SST, connect terminals TE 1 and E 1 of the data
link connector 1.
SST 09843±18020
± 5S±FE ENGINEEMISSION CONTROL SYSTEMSEG1±153

ELECTRONIC CONTROL SYSTEM
The CAMRY 5S±FE engine is equipped with a TOYOTA Computer Controlled System (TCCS)
which centrally controls the MFI/SFI, ESA, IAC diagnosis systems etc. by means of an Engine
Control Module (ECM±formerly MFI/SFI computer) employing a microcomputer.
The ECM controls the following functions:
1. Multiport Fuel Injection (MFI)/Sequential Multiport Fuel Injection (SFI)
The ECM receives signals from various sensors indicating changing engine operation conditions
such as:
Intake manifold pressure
Intake air temperature
Engine coolant temperature
Engine speed
Throttle valve opening angle
Exhaust oxygen content etc.
The signals are utilized by the ECM to determine the injection duration necessary for an optimum
air±fuel ratio.
2. Electronic Spark Advance (ESA)
The ECM is programmed with data for optimum ignition timing under all operating conditions.
Using data provided by sensors which monitor various engine functions (RPM, engine coolant
temperature, etc.), the microcomputer (ECM) triggers the spark at precisely the right instant.
3. Idle Air Control (IAC)
The ECM is programmed with target idling speed values to respond to different engine conditions
(engine coolant temperature, air conditioning ON/OFF, etc.). Sensors transmit signals to the ECM
which controls the flow of air through the bypass of the throttle valve and adjusts idle speed to
the target value.
4. Diagnosis
The ECM detects any malfunctions and abnormalities in the sensor network and lights a
malfunction indicator lamp in the combination meter. At the same time, trouble is identified and
a diagnostic trouble code is recorded by the EC
5. The diagnostic trouble code can be read by the
number of blinks of the malfunction indicator lamp when terminals TE1 and E1 are connected.
The diagnostic trouble codes are referred to in later page. (See page EG1±300)
Fail±Safe Function
In the event of the sensor malfunction, a back±up circuit will take over to provide minimal
driveability, and the malfunction indicator lamp will illuminate. The MFI (Multiport Fuel Injection)/SFI (Sequential Multiport Fuel Injection) system is composed
of 3 basic sub±systems: Fuel, Air Induction and Electronic Control Systems.
FUEL SYSTEM
Fuel is supplied under constant pressure to the MFI/SFI injectors by an electric fuel pump. The
injectors inject a metered quantity of fuel into the intake port in accordance with signals from the
ECM (Engine Control Module).
AIR INDUCTION SYSTEM
The air induction system provides sufficient air for engine operation.
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±166

The control system consists of sensors which detect various engine conditions, and a ECM which
determines the injection volume (timing) based on the signals from the sensors.
The various sensors detect the intake air pressure, engine speed, oxygen density in the exhaust
gas, engine coolant temperature, intake air temperature and atmospheric pressure etc. and
convert the information into an electrical signal which. is sent to the ECM. Based on these signals,
the ECM calculates the optimum ignition timing for the current conditions and operates the
injectors.
The ECM not only controls the fuel injection timing, but also the self diagnostic function which
records the occurrence of a malfunction, ignition timing control, idle speed control and EGR
control.
ELECTRONIC CONTROL SYSTEM
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±169