2001 TOYOTA AVALON cruise control

CO0WV-01
B09038
No.1 Cooling FanNo.1 Cooling Fan Connector
Hold-Down
Clamp

Non-reusable partNutFanFan Shroud
Fan Motor
No.1
Battery
Insulator
Battery
Battery
Tray
Cruise Control
Actuator
No.3 Engine Room
Relay Block
- COOLINGELECTRIC COOLING FAN
CO-25
1218 Author
: Date
:
2001 AVALON (RM808U)
COMPONENTS

CO09O-02
B09051
No.1
B09052
No.2
- COOLINGELECTRIC COOLING FAN
CO-27
1220 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
REMOVE COOLING FANS
(a) Remove the No.1 cooling fan.
(1) Remove the batter and battery tray.
(2) Disconnect the cruise control actuator.
(3) Disconnect the No.3 engine room relay block from
radiator.
(4) Disconnect the cooling fan connector.
(5) Disconnect the wire clamps from the fan shroud.
(6) Remove the 2 bolts and cooling fan.
Torque: 5.0 N´m (50 kgf´cm, 44 in.´lbf)
(b) Remove the No.2 cooling fan.
(1) Drain the engine coolant.
(2) Disconnect the upper radiator hose from the radia-
tor.
(3) Disconnect the cooling fan and No.1 ECT switch
wire connectors.
(4) Disconnect the wire clamps from the fan shroud.
(5) Disconnect the No.1 ECT switch connector.
(6) Remove the 2 bolts and cooling fan.
Torque: 5.0 N´m (50 kgf´cm, 44 in.´lbf)

F09807
Translate ECU
13
T5 ECM
NEO
NEO16
E7Y-B
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI-313
469 Author
: Date
:
2001 AVALON (RM808U)
DTC 44 NEO Signal Circuit
CIRCUIT DESCRIPTION
The ABS & BA & TRAC & VSC ECU receives engine revolution speed signals (NEO signal) from the ECM.
DTC No.DTC Detecting ConditionTrouble Area
44
When either of the following 1. or 2. is detected:
1. The vehicle speed is 30 km/h (19 mph) or more, and
open or short condition of the engine revolution signal
under the normal communication condition with ECU
continues for 10 secs. or more.
2. While cancel of cruise control is instructed from VSC
ECU, open or short condition of the engine revolution
signal continues for 0.24 sec. or more.

NEO circuit

ECM

Translate ECU
WIRING DIAGRAM
DI6OD-03

D07905
C15 E7 Cruise Control ECU
14
ODGR24
OD1ECM
- DIAGNOSTICSAUTOMATIC TRANSAXLE
DI-203
359 Author
: Date
:
2001 AVALON (RM808U)
O/D Cancel Signal Circuit
CIRCUIT DESCRIPTION
While driving uphill with cruise control activated, in order to minimize gear shifting and provide smooth cruis-
ing overdrive may be prohibited temporarily under some condition.
The cruise control ECU sends O/D cut signals to the ECM as necessary and the ECM cancels overdrive
shifting until these signals are discontinued.
WIRING DIAGRAM
DI02S-08

BE3840D00835D07206
ON
(-) (+)
OD1
AB0119
N19917
I00742
ON
O/D
(-)
(+)
DI-204
- DIAGNOSTICSAUTOMATIC TRANSAXLE
360 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check voltage between terminal OD1 of ECM and body ground.
PREPARATION:
(a) Remove the glove compartment.
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between terminal OD1 of ECM and body
ground.
OK:
Voltage: 10 - 14 V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI-175).
NG
2 Check voltage between terminal OD of cruise control ECU harness side connec-
tor and body ground.
PREPARATION:
(a) Disconnect the cruise control ECU connector.
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between terminal OD of cruise control ECU
harness side connector and body ground.
OK:
Voltage: 10 - 14 V
OK Check and replace the cruise control ECU
(See page IN-30).
NG

- DIAGNOSTICSAUTOMATIC TRANSAXLE
DI-205
361 Author
: Date
:
2001 AVALON (RM808U)
3 Check harness and connector between cruise control ECU and ECM
(See page IN-30).
NG Repair or replace the harness or connector.
OK
Check and replace the ECM
(See page IN-30).

D07908
Transaxle
Shift Solenoid Valve No.1
3
6 S1
Shift Solenoid
Valve No.2S2G-YE47
1
E6ECM
S1
S2 P
G-Y
B
BB J8
J/C
From Cruise Control ECU DI-184
- DIAGNOSTICSAUTOMATIC TRANSAXLE
340 Author
: Date
:
2001 AVALON (RM808U)
WIRING DIAGRAM

DI02G-06
D07229
Cruise Control ECU ECMFloor Shift:
O/D Main SwitchColumn Shift:
O/D Main Switch
DLC3
Stop Light Switch
Shift Solenoid Valve SLN
Shift Solenoid Valve Direct Clutch
Speed Sensor
Park/Neutral
Position Switch Shift Solenoid
Valve SL
- DIAGNOSTICSAUTOMATIC TRANSAXLE
DI-173
329 Author
: Date
:
2001 AVALON (RM808U)
PARTS LOCATION