TOYOTA AVALON 2001 Service Repair Manual

CO0SW-02
A10518
5 mm
Hexagon
Wrench
B08906
B06725
B04150
CO-10
- COOLINGTHERMOSTAT
1203 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
HINT:
Removal of the thermostat would have an adverse effect, caus-
ing a lowering of cooling efficiency. Do not remove the thermo-
stat, even if the engine tends to overheat.
1. DRAIN ENGINE COOLANT
2. REMOVE V-BANK COVER
(a) Using a 5 mm hexagon wrench, remove the 3 cap nuts.
(b) Loosen the V-bank cover fastener counterclockwise.
(c) Remove the V-bank cover.
3. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
4. REMOVE AIR CLEANER HOSE WITH RESONATOR
5. DISCONNECT HEATER HOSES
6. DISCONNECT NO.2 ECT SWITCH CONNECTOR
7. DISCONNECT ENGINE WIRE PROTECTOR FROM
WATER INLET AND RH CYLINDER HEAD
Remove the nut and disconnect the clamp, and disconnect the
engine wire protector from the water inlet and cylinder head.
8. DISCONNECT WATER INLET PIPE FROM WATER IN-
LET AND LH CYLINDER HEAD
(a) Remove the bolt, and disconnect the inlet pipe from the
water inlet.
(b) Remove the O-ring from the inlet pipe.
9. REMOVE WATER INLET AND THERMOSTAT
(a) Remove the 3 nuts, water inlet and thermostat.
(b) Remove the gasket from the thermostat.

CO02M-03
A10834
RH Fender Apron Seal
Generator Drive Belt
Engine Moving
Control Rod
No.2 RH Engine
Mounting Bracket
Ground Strap
Connector PS Pump Drive Belt
Engine Coolant Reservoir Hose
: Specified torque
64 (650, 47)
32 (320, 23)
N´m (kgf´cm, ft´lbf)
- COOLINGWATER PUMP
CO-3
1196 Author
: Date
:
2001 AVALON (RM808U)
WATER PUMP
COMPONENTS

B06475
No.2 Timing Belt CoverTiming Belt
Gasket
Timing Belt Guide
No.2 Generator
Bracket RH Engine Mounting Bracket
28 (290, 21)
Crankshaft
Pulley
215 (2,200, 159)
Gasket
Engine Wire Protector
125 (1,300, 94)
*88 (900, 65)
RH Camshaft Timing Pulley
43 (400, 32)
No.2 Idler Pulley
125 (1,300, 94)
Dust Boot
Timing Belt Tensioner
27 (280, 20)

Non-reusable part
*For use with SSTNo.1 Timing Belt Cover
LH Camshaft
Timing Pulley
N´m (kgf´cm, ft´lbf) : Specified torque
CO-4
- COOLINGWATER PUMP
1197 Author
: Date
:
2001 AVALON (RM808U)

B06476
Non-reusable partNo.3 Timing Belt CoverGasket
Collar
Bushing
Water Pump
Gasket Engine Wire
8.5 (65, 74 in.´lbf)
x 6
8 (80, 69 in.´lbf)
N´m (kgf´cm, ft´lbf) : Specified torque
- COOLINGWATER PUMP
CO-5
1198 Author
: Date
:
2001 AVALON (RM808U)

CO02O-03
P12487
- COOLINGWATER PUMP
CO-7
1200 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
1. INSPECT WATER PUMP
(a) Visually check the drain hole for coolant leakage.
If leakage is found, replace the water pump.
(b) Turn the pulley, and check that the water pump bearing
moves smoothly and quietly.
If necessary, replace the water pump.
2. INSPECT TIMING BELT COMPONENTS
(See page EM-19)

CO02P-03
P12942
CO-8
- COOLINGWATER PUMP
1201 Author
: Date
:
2001 AVALON (RM808U)
INSTALLATION
1. INSTALL WATER PUMP
Install a new gasket and the water pump with the 4 bolts and 2
nuts.
Torque: 8 N´m (80 kgf´cm, 69 in.´lbf)
NOTICE:
Do not get oil on the gasket.
2. INSTALL NO.3 TIMING BELT COVER
(See page EM-59)
3. INSTALL NO.2 IDLER PULLEY (See page EM-21)
4. INSTALL CAMSHAFT TIMING PULLEYS
(See page EM-21)
5. INSTALL TIMING BELT (See page EM-21)
6. FILL WITH ENGINE COOLANT
7. START ENGINE AND CHECK FOR LEAKS
8. RECHECK ENGINE COOLANT LEVEL

CO0WS-01
P12942
CO-6
- COOLINGWATER PUMP
1199 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE TIMING BELT (See page EM-15)
3. REMOVE CAMSHAFT TIMING PULLEYS
(See page EM-15)
4. REMOVE NO.2 IDLER PULLEY (See page EM-31)
5. REMOVE NO.3 TIMING BELT COVER
(See page EM-15)
6. REMOVE WATER PUMP
Remove the 4 bolts, 2 nuts, water pump and gasket.

F09799
ABS Actuator and ECU
A7 20
WA
Engine Room J/BEngine Room R/B No. 5
AM1
5 512
BIgnition Switch Driver Side J/B Multi Display
GAUGE No. 1
IG1 Relay10
1D
12
3 44
1C 3
1B1
1G W J/B No. 4
ABS
M65
M64
13
4F4
4DIE115
Battery FL Block
ALT 1
F8F61
BFL MAIN
IGB
B 7 A21
Active Light Relay
1 R-L
R-L
B-L ABS
D2
DLC215 4B
J/B No. 4
15 4A15
4HR-L
R-B R-B
4
W-R
IG1 AM12
7
IF1
1
2G1
2H
1
F10 W-BW-L
W-L 14
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)DI-243
399 Author
: Date
:
2001 AVALON (RM808U)
ABS Warning Light Circuit
CIRCUIT DESCRIPTION
If the ECU detects trouble, the ABS warning light lights up and ABS control is prohibited at the same time.
At this time, the ECU records a DTC in memory.
Connecting terminals Tc and E
1 of the DLC1 makes the ABS warning light blink and output the DTC.
WIRING DIAGRAM
DI6NM-02

DI-244- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
400 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
Troubleshooting in accordance with the chart below for each trouble symptom.
ABS warning light does not light upGo to step 1
ABS warning light remains onGo to step 2
1 Check ABS warning light.
See combination meter troubleshooting on page BE-2.
NG Repair bulb or combination meter assembly.
OK
2 Check active lamp relay.
NG Replace active lamp relay.
OK
Check for open circuit in harness and connector between GAUGE fuse and active lamp relay,
ECU-IG No. 2 fuse and active lamp relay, short circuit between active lamp relay and ABS ECU
(See page IN-30).
3 Is DTC output?
Check the DTC on page DI-212.
YES Repair circuit indicated by the code output.
NO
Check for short circuit in harness and connector and active lamp relay, ECU-IG No. 2 fuse and
active lamp relay, short circuit between active lamp relay and ABS ECU (See page IN-30).

DI-238- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
394 Author
: Date
:
2001 AVALON (RM808U)
DTC Always ON ABS ECU Malfunction
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
Always ON
Either of the following 1., 2. or 3. is detected:
1. The ECU connectors are OFF the ECU.
2. There is a malfunction in the ECU internal circuit.
3. There is a malfunction in ABS warning light circuit.

Charging system

ABS warning light circuit
INSPECTION PROCEDURE
1 Check that the ECU connectors are securely connected to the ECU.
NO Connect the connector to the ECU.
YES
2 Is DTC output?
Check DTC on page DI-212.
YES Repair circuit indicated by the output code.
NO
3 Does ABS warning light go off?
YES Check for open or short circuit in harness and
connector between ECU-IG fuse and ECU (See
page IN-30).
NO
DI6NK-01