sensor TOYOTA AVALON 2001 Service Repair Manual

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

I13658
*1 *2
*2 *1*2
W-B
11
*1
*1
W-B
21 B9
Buckle Switch RH
2
*2
A
J10
J/CBN6
GG
*1BD1
IM26
*2
G17
B5
GBody ECU
1 S11Seat Belt
Warning Occupant
Detection Sensor
R-W 8
BD12
W-R4
B5
*2
PBKL
SEAT
*1: w/ Sliding Roof
*2: w/o Power Seat
*1IM2 BD1
W-B
W-B
W-BW-B
*1
W-R W-R DI-660
- DIAGNOSTICSBODY CONTROL SYSTEM
816 Author
: Date
:
2001 AVALON (RM808U)
Passenger buckle switch and seat belt warning occupant detec-
tion sensor
CIRCUIT DESCRIPTION
This circuit detects the conditions of the passenger buckle switch and the seat belt warning occupant detec-
tion sensor, and makes the passenger seat belt warning flash.
WIRING DIAGRAM
DI6LZ-01

- DIAGNOSTICSBODY CONTROL SYSTEM
DI-661
817 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check passenger buckle switch. (See page BE-53)
NG Replace the passenger buckle switch.
OK
2 Check seat belt warning occupant Detection sensor. (See page BE-53)
NG Replace the seat belt warning occupant Detec-
tion sensor.
OK
3 Check wireharness and connector between seat belt warning occupant Detec-
tion sensor and body ECU, passenger buckle switch and seat belt warning occu-
pant Detection sensor, passenger buckle switch and body ground.
NG Repair or replace wireharness or connector.
OK
Proceed to next circuit inspection shown on
problem symptoms table.
(See page DI-622)

I13586
Front
Personal
Light
Vanity Light
Rear Power
Window Switch Wireless Door
Lock Buzzer
Door Lock Assembly

Door Lock Motor

Door Unlock
Detection Switch
Door Courtesy Light Door Courtesy Switch
Buckle Switch Room Light
Rear Power Seat Switch
Door Lock Assembly

Door Lock Motor

Door Unlock Detection Switch
Door Courtesy Switch
Door Courtesy Light
Luggage Compartment Door
Opener Motor and Courtesy
Switch
Passenger Seat Belt Occupant Detection
Sensor
Wireless Door Lock
Receiver
Park/Neutral Position Switch
DI-618
- DIAGNOSTICSBODY CONTROL SYSTEM
774 Author
: Date
:
2001 AVALON (RM808U)

DI6LJ-01
DI-622
- DIAGNOSTICSBODY CONTROL SYSTEM
778 Author
: Date
:
2001 AVALON (RM808U)
PROBLEM SYMPTOMS TABLE
IGNITION SWITCH AND KEY UNLOCK WARNING SWITCH:
SymptomSuspect AreaSee page
Ignition switch is not set to each position.1. Ignition switch
2. Power source circuitBE-16
DI-627
Key unlock warning system does not operate.
(The buzzer does not sound when the driver's door is opened with
the ignition OFF and key inserted)
1. Power source circuit
2. Key unlock warning switch circuit
3. Door courtesy switch circuit
4. Driver door ECU
5. Multiplex communication circuit
6. Body ECU
7. Wire harnessDI-627
DI-637
DI-639
DI-676
DI-718
IN-30
IN-30
Key unlock warning system does not operate.
(The buzzer sounds when the ignition key is ACC or ON)1. Ignition switch
2. Power source circuit
3. Wire harnessBE-16
DI-627
IN-30
HEADLIGHT AND TAILLIGHT SYSTEM (USA):
SymptomSuspect AreaSee page
Only one side headlight does not light.
1. HEAD-(LH, RH) fuse
2. Headlight bulb
3. Wire harnessBE-9
-
IN-30
Headlight does not light.
1. HEAD-(LH, RH) fuse
2. Headlight control relay circuit
3. Light control switch circuit
4. Headlight bulb
5. Wire harnessBE-9
DI-635
DI-631
-
IN-30
ºLo-Beamº does not light.
1. Headlight bulb
2. Headlight dimmer switch
3. Light control switch circuit
4. Wire harness-
DI-631
DI-631
IN-30
ºHi-Beamº does not light.
1. Headlight bulb
2. Headlight dimmer switch
3. Light control switch circuit
4. Wire harness-
DI-631
DI-631
IN-30
ºFlashº does not light.1. Headlight dimmer switch
2. Wire harnessDI-631
IN-30
Only one side taillight does not light.1. Taillight bulb
2. Wire harness-
IN-30
Taillight does not light.
1. TAIL fuse
2. Taillight control relay circuit
3. Light control switch circuit
4. Body ECU
5. Wire harnessBE-9
DI-633
DI-631
IN-30
IN-30
Rear Combination light does not light.
1. Bulb
2. Light failure sensor
3. Wire harness-
BE-53
IN-30

- DIAGNOSTICSBODY CONTROL SYSTEM
DI-623
779 Author
: Date
:
2001 AVALON (RM808U)
HEADLIGHT AND TAILLIGHT SYSTEM (CANADA):
SymptomSuspect AreaSee page
Only one side headlight does not light.
1. Headlight bulb
2. HEAD LWR (LH, RH) fuse
3. Wire harness-
BE-9
IN-30
Headlight does not light.
1. Headlight bulb
2. Headlight control relay circuit
3. Light control switch circuit
4. Wire harness-
DI-635
DI-631
IN-30
ºLo-Beamº does not light.
1. Headlight bulb
2. HEAD LWR (LH, RH) fuse
3. Headlight control relay circuit
4. Headlight dimmer switch
5. Wire harness-
BE-9
DI-635
DI-631
IN-30
ºHi-Beamº does not light.
1. Headlight bulb
2. HEAD UPR (LH, RH) fuse
3. DRL fuse
4. D.R.L. relay No.2, 3 and 4 relay circuit
5. Headlight dimmer switch
6. Wire harness-
BE-9
BE-9
DI-668
DI-631
IN-30
ºFlashº does not light.
1. Headlight bulb
2. HEAD UPR (LH, RH) fuse
3. DRL fuse (R/B No.7)
4. D.R.L. relay No.2, 3 and 4 relay circuit
5. Headlight dimmer switch
6. Wire harness-
BE-9
BE-9
DI-668
DI-631
IN-30
Headlight does not light with engine running and light control SW
OFF.
1. DOME fuse
2. GAUGE fuse
3. DRL fuse
4. Parking brake switch circuit
5. Generator
6. Wire harnessBE-9
BE-9
BE-9
DI-670
CH-9
IN-30
Only one side taillight does not light.1. Bulb
2. Wire harness-
IN-30
Taillight does not light.
1. TAIL fuse
2. Taillight control relay circuit
3. Light control switch circuit
4. Body ECU
5. Wire harnessBE-9
DI-633
DI-631
IN-30
IN-30
Rear Combination light does not light.
1. Taillight bulb
2. Light failure sensor
3. Wire harness-
BE-53
IN-30
AUTO TURN OFF SYSTEM:
SymptomSuspect AreaSee page
ºAuto turn-off systemº does not operate.
1. Drivers door courtesy switch circuit
2. Driver door ECU
3. Multiplex communication circuit
4. Body ECUDI-639
DI-676
DI-718
IN-30

- DIAGNOSTICSBODY CONTROL SYSTEM
DI-621
777 Author
: Date
:
2001 AVALON (RM808U) B5-6 e B5-14
RLWBIgnition switch ON10 - 14 VB5 6 e B5 14
(ALTL e GND1)R-L e W-BEngine runningBelow 1 V
B5-7 e B5-14
(CLTE e GND1)Y-B e W-BAutomatic light control sensor communication circuit-
B5-8 e B5-14
(CLTS e GND1)LG e W-BAutomatic light control sensor communication circuit-
B5-9 e B5-14
(MPX3 e GND1)R-Y e W-BMultiplex communication circuit-
B5-10 e B5-14
(RRU e GND1)G-B e W-BRear right side power window UP operationBelow 1 V
B5-1 1 e B5-14GRWBPassenger seat belt unfastenedBelow 1 VB5 1 1 e B5 14
(PBEW e GND1)G-R e W-BPassenger seat belt fastened10 - 14 V
B5-13 e Body ground
(CLTC e Body ground)W-B e Body groundConstantBelow 1 V
B5-14 e Body ground
(GND1 e Body ground)W-B e -ConstantBelow 1 V
B5-16 e B5-14RWWBRear door closed10 - 14 VB5 16 e B5 14
(RCTY e GND1)R-W e W-BRear door openedBelow 1 V
B5-17 e B5-14GWBPassenger seat belt unfastenedBelow 1 VB5 17 e B5 14
(PBKL e GND1)G e W-BPassenger seat belt fastened10 - 14 V
B5-18 e B5-14LBWBLuggage compartment door opener switch is operatedBelow 1 VB5 18 e B5 14
(TKU e GND1)L-B e W-BLuggage compartment door opener switch is not operated10 - 14 V
B5-20 e B5-14
(CLTB e GND1)L e W-BAutomatic light control sensor communication circuit-
B5-21 e B5-14
(MPX4 e GND1)G-B e W-BMultiplex communication circuit-
B5-22 e B5-14
(RRD e GND1)R-B e W-BRear right side power window DOWN operationBelow 1 V
B5-23 e B5-14GWWBPassenger seat belt unfastenedBelow 1 VB5 23 e B5 14
(DBEW e GND1)G-W e W-BPassenger seat belt fastened10 - 14 V
B5-25 e B5-14RWBEach door closed10 - 14 VB5 25 e B5 14
(AJAR- e GND1)R e W-BEach door openedBelow 1 V

I13617
Cruise Control ECU
4 3
3
W-B8 Stop Light Switch
4Cruise Control Actuator
13
II1
IJJ9
J/CL
9P-B P-B G-B GNDL
AC4
S4
C15
W-B II1
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-563
719 Author
: Date
:
2001 AVALON (RM808U)
DTC 12 Actuator Magnetic Clutch Circuit
CIRCUIT DESCRIPTION
This circuit turns on the magnetic clutch inside the actuator during cruise control operation according to the
signal from the ECU. If a malfunction occurs in the actuator or speed sensor, etc. during cruise control opera-
tion, the rotor shaft between the motor and control plate is released.
When the brake pedal is depressed, the stop light switch turns on, supplying electrical power to the stop light.
Power supply to the magnetic clutch is mechanically cut and the magnetic clutch is turned OFF.
When driving downhill, if the vehicle speed exceeds the set speed by 15 km/h (9 mph), the ECU turns the
safety magnet clutch OFF. If the vehicle speed later drops to within 10 km/h (6 mph), cruise control at the
set speed is resumed.
DTC No.Detection ItemTrouble Area
12Short in actuator magnetic clutch circuit.
Open (0.8 sec.) in actuator magnetic clutch circuit.

STOP Fuse

Stop light switch

Actuator magnetic clutch

Harness or connector between cruise control ECU and
actuator magnetic clutch, actuator magnetic clutch and body
ground

Cruise control ECU
WIRING DIAGRAM
DI08N-15

I00292
Vehicle Speed Sensor
ECUCombination Meter
Cruise Control ECU
4 pulses/
1 rotation
of rotor shaft4 pulses/
1 rotation
of rotor shaft
I13616
Cruise Control ECU
12 Combination Meter
3C10
V-W V-W
Y-R BR
to
ABS ECU3F1
M322
M3 M37
BR IJ1 11
EBM3
to ECU-IG Fuse 18
SPD
C15
J/B No. 3
1 DI-568
- DIAGNOSTICSCRUISE CONTROL SYSTEM
724 Author
: Date
:
2001 AVALON (RM808U)
DTC 21 Open in Vehicle Speed Sensor Circuit
CIRCUIT DESCRIPTION
The signal from the vehicle speed sensor circuit is sent to cruise control ECU as vehicle speed signal.
The rotor shaft is driven by the gear of the transmission.
For each rotation of the shaft, the vehicle speed sensor sends a 4-pulse signal through the combination
meter to the cruise control ECU (See the following installation).
This signal is converted inside the combination meter and sent as a 4-pulse signal to the cruise control ECU.
The ECU calculates the vehicle speed from this pulse frequency.
DTC No.Detection ItemTrouble Area
21Speed signal is not input to the cruise control ECU while cruise
control is set.

Combination meter

Harness or connector between cruise control ECU and com-
bination meter, combination meter and vehicle speed sensor

Vehicle speed sensor

Cruise control ECU
WIRING DIAGRAM
DI08P-18

Input SignalIndicator Light
Blinking Pattern
Drive at about
40 km/h (25 mph)
or below
Drive at about
40 km/h (25 mph)
or higherLightON
OFF
LightON
OFF
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-569
725 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Input signal check.
CHECK:
(a) See input signal check on page DI-551.
(b) Check indicator light operation when driving with vehicle
speed above 40 km/h (25 mph), and with vehicle speed
below 40 km/h (25 mph).
OK:
Vehicle speed above 40 km/h (25 mph):
Indicator light blinks
Vehicle speed below 40 km/h (25 mph):
Indicator light stays on
OK Check and replace cruise control ECU (See
page IN-30).
NG
2 Check speedometer circuit (See Combination meter troubleshooting on page
BE-2).
NG Repair or replace harness, connector or com-
bination meter assembly.
OK
3 Check harness and connector between cruise control ECU and combination me-
ter, combination meter and vehicle speed sensor (See page IN-30).
NG Repair or replace harness or connector.
OK