2001 TOYOTA AVALON BE-43

BE1DO-01
I12772
Connector ºAº
Connector ºFº
Connector ºGº
Connector ºDº Connector ºEºConnector ºBº
Multi Information Display:
Connector ºCº Combination Meter:
- BODY ELECTRICALCOMBINATION METER
BE-43
1647 Author
: Date
:
2001 AVALON (RM808U)
CIRCUIT

BE-4
- BODY ELECTRICALTROUBLESHOOTING
1608 Author
: Date
:
2001 AVALON (RM808U)
COMBINATION METER (Meter, Gauges and Illumination):
SymptomSuspect AreaSee page
Tachometer, Fuel Gauge and Engine Coolant Temperature Gauge
do not operate.
1. ECU-B Fuse
2. ECU-IG No. 2 Fuse
3. Meter Circuit Plate
4. Wire Harness
5. Multi Display-
-
BE-43
-
-
Speedometer does not operate.
1. Vehicle Speed Sensor (ABS - ECU)
2. Meter Circuit Plate
3. Wire Harness
4. Multi DisplayBE-53
BE-43
-
-
Tachometer does not operate.
1. EFI - ECU
2. Meter Circuit Plate
3. Wire Harness
4. Multi Display-
BE-43
-
-
Fuel Gauge does not operate or abnormal operation.
1. Fuel Receiver Gauge
2. Fuel Sender Gauge
3. Meter Circuit Plate
4. Wire HarnessBE-53
BE-53
BE-43
-
Engine Coolant Temperature Gauge does not operate or abnormal
operation.
1. Engine Coolant Temperature Receiver Gauge
2. Engine Coolant Temperature Sender Gauge
3. Meter Circuit Plate
4. Wire HarnessBE-53
BE-53
BE-43
-
All illumination lights do not light up.
1. Bulb
2. PANEL Fuse
3. Light Control Rheostat
4. Wire Harness-
-
BE-53
-
Brightness does not change even when rheostat turned.
1. Bulb
2. Rheostat
3. Wire Harness-
-
-
Only one illumination light does not light up.1. Bulb
2. Wire Harness-
-
COMBINATION METER (Warning Lights):
SymptomSuspect AreaSee page
Warning lights do not light up. (Except Discharge, Open Door and
SRS)
1. Bulb
2. GAUGE No. 1 Fuse
3. Meter Circuit Plate
4. Wire Harness-
-
BE-53
-
Low Oil Pressure warning light does not light up.
1. Multi Display
2. Bulb
3. Low Oil Pressure Warning Switch
4. Meter Circuit Plate
5. Wire Harness-
-
BE-53
BE-43
-
Fuel Level warning light does not light up.
1. Multi Display
2. Bulb
3. Fuel Sender Gause
4. Meter Circuit Plate
5. Wire Harness-
-
BE-53
BE-43
-
ABS warning light does not light up.
1. Bulb
2. ABS ECU
3. Wire Harness-
DI-210
-

- BODY ELECTRICALTROUBLESHOOTING
BE-5
1609 Author
: Date
:
2001 AVALON (RM808U) Seat Belt warning light does not light up.
1. Bulb
2. Body Control System
3. Meter Circuit Plate
4. Wire Harness-
DI-615
BE-53
-
Discharge warning light does not light up.
1. AM2 - Fuse
2. Bulb
3. Meter Circuit Plate
4. Wire Harness
5. Generator-
-
BE-53
-
CH-9
Light Failure warning light does not light up.
1. Bulb
2. Light Failure Sensor
3. Bulb Check Relay
4. Wire Harness
5. Taillight System-
BE-53
BE-53
-
BE-2
Brake warning light does not light up.
1. Bulb
2. Parking Brake Switch
3. Brake Fluid Level Warning Switch
4. Bulb Check Relay
5. Meter Circuit Plate
6. Wire Harness-
BE-53
BE-53
BE-53
BE-43
-
SRS Warning light does not light up.
1. AM2 - Fuse
2. Bulb
3. Airbag Sensor Assembly
4. Meter Circuit Plate
5. Wire Harness-
-
RS-62
RS-67
BE-43
Open Door warning light does not light up.
1. DOME Fuse
2. Bulb
3. Door Courtesy Switch
4. Body Control System
5. Meter Circuit Plate
6. Wire Harness-
-
BE-31
DI-615
BE-43
-
Washer Level warning light does not light up.
1. Bulb
2. Washer Fluid Level Warning Switch
3. Meter Circuit Plate
4. Wire Harness-
BE-53
BE-43
-
COMBINATION METER (Indicator Lights):
SymptomSuspect AreaSee page
O/D OFF indicator light does not light up.
1. Bulb
2. O/D OFF Switch
3. ECM
4. Meter Circuit Plate
5. Wire Harness-
DI-203
DI-1
BE-43
-
Cruise Control indicator light does not light up.
1. Bulb
2. Cruise Control ECU
3. Meter Circuit Plate
4. Wire Harness-
DI-549
BE-43
-
High beam indicator light does not light up.
1. Bulb and Taillight
2. Headlight System
3. Meter Circuit Plate
4. Wire Harness-
BE-2
BE-43
-
Turn indicator light does not light up.
1. Bulb
2. Turn Signal and Hazard Warning System
3. Meter Circuit Plate
4. Wire Harness-
BE-2
BE-43
-

BE-6
- BODY ELECTRICALTROUBLESHOOTING
1610 Author
: Date
:
2001 AVALON (RM808U) Shift indicator lights do not light up.
1. Bulb
2. Park/Neutral Position Switch
3. Meter Circuit Plate
4. Wire Harness-
DI-199
BE-43
-
Only one shift indicator does not light up.1. Bulb
2. Meter Circuit Plate-
BE-43
Malfunction indicator light does not light up.
1. Bulb
2. ECM
3. Meter Circuit Plate
4. Wire Harness-
DI-1
BE-43
-
SLIP indicator light does not light up.
1. Bulb
2. ABS & TRAC ECU
3. Meter Circuit Plate
4. Wire Harness-
DI-250
BE-43
-
TRAC OFF indicator light does not light up.
1. Bulb
2. ABS & TRAC ECU
3. Meter Circuit Plate
4. Wire Harness-
DI-250
BE-43
-
Security indicator light does not light up.
1. LED
2. Theft Deterrent ECU
3. Meter Circuit Plate
4. Wire Harness-
DI-517
BE-43
-
Indicator lights do not light up. (Except Turn, Hi-beam and
security)1. GAUGE Fuse
2. Wire Harness-
-
DEFOGGER SYSTEM:
SymptomSuspect AreaSee page
All defogger systems do not operate.
1. SEAT HEATER Fuse
2. DEF Fuse
3. Defogger Relay
4. Defogger Switch
5. Wire Harness-
-
BE-67
DI-1
-
Rear window defogger does not operate.
1. Defogger Wire
2. Choke Coil
3. Wire HarnessBE-67
-
-
Mirror defogger does not operate.
1. MIR/HTR Fuse
2. Mirror Defogger
3. Wire Harness-
BE-67
-
POWER WINDOW CONTROL SYSTEM:
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before checking the body control system.
POWER DOOR LOCK CONTROL SYSTEM:
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before checking the body control system.

DI-624
- DIAGNOSTICSBODY CONTROL SYSTEM
780 Author
: Date
:
2001 AVALON (RM808U)
INTERIOR LIGHT SYSTEM:
SymptomSuspect AreaSee page
Only one light does not light up.1. Bulb
2. Wire harness-
IN-30
Room light does not light up (All).
1. DOME fuse
2. Body ECU
3. Wire harnessBE-9
IN-30
IN-30
Room light does not light up (Room light only).
1. Bulb
2. Room light assembly
3. Wire harness-
BE-31
IN-30
ºIlluminated Entry Systemº does not operate.
1. Illumination circuit
2. Door courtesy switch circuit
3. Door unlock detection switch circuit
4. Body ECU
5. Wire harnessDI-655
DI-639
DI-643
DI-686
DI-708
IN-30
IN-30
Front personal light does not light up.
1. Bulb
2. Front personal light
3. Body ECU
4. Wire harness-
BE-31
IN-30
IN-30
Rear personal light does not light up.1. Bulb
2. Rear personal light-
BE-31
Vanity light does not light up.
1. Bulb
2. Vanity light
3. Wire harness-
BE-31
IN-30
Luggage room light does not light up.
1. Bulb
2. Luggage compartment light
3. Luggage compartment door courtesy switch circuit
4. Body ECU
5. Wire harness-
BE-31
BE-31
IN-30
IN-30
COMBINATION METER:
SymptomSuspect AreaSee page
Seat Belt warning light does not light up.
1. Warning light bulb
2. Buckle switch circuit
3. Body ECU
4. Meter circuit plate
5. Wire harnessBE-43
BE-53
IN-30
BE-43
IN-30
Open Door warning light does not light up.
1. DOME fuse
2. Warning light bulb
3. Door courtesy switch circuit
4. Illumination circuit
5. Meter circuit plate
6. Wire harnessBE-9
BE-43
DI-639
DI-655
BE-43
IN-30

I11635
DI6L5-01
BE4034
Indicator Light
1.5 sec.0.5 sec.
ON
OFF
I00169
DLC2
Tc E 1
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-551
707 Author
: Date
:
2001 AVALON (RM808U)
PRE-CHECK
1. DIAGNOSIS SYSTEM
(a) Check the indicator.
(1) Turn the ignition switch ON.
(2) Check that the CRUISE MAIN indicator light comes
ON when the cruise control main switch is turned
ON, and that the indicator light goes OFF when the
main switch is turned OFF.
HINT:
If the indicator check result is not normal, proceed to trouble-
shooting (See page BE-43) for the combination meter
section.
(b) Check the DTC.
HINT:
If a malfunction occurs in the No. 1 vehicle speed sensor or ac-
tuator, etc. during cruise control driving, the ECU actuates
AUTO CANCEL of the cruise control and turns on and off the
CRUISE MAIN indicator light to inform the driver of a malfunc-
tion. At the same time, the malfunction is stored in memory as
a DTC.
(c) Output of DTC using diagnosis check wire.
(1) Turn the ignition switch ON.
(2) Using SST, connect terminals Tc and E
1 of DLC2.
SST 09843-18020
(3) Read the DTC on the CRUISE MAIN indicator light.

A02030
E7 Connector
SPD
A02029
E7 ConnectorON
SPD(-) (+)
DI-100
- DIAGNOSTICSENGINE
256 Author
: Date
:
2001 AVALON (RM808U)
1 Check operation of speedometer.
CHECK:
Drive the vehicle and check if the operation of the speedometer in the combination meter is normal.
HINT:
The vehicle speed sensor is operating normally if the speedometer display is normal.
NG Check speedometer circuit (See page BE-43).
OK
2 Check for short in harness and connector between terminal SPD of ECM and
body ground.
PREPARATION:
(a) Remove the glove compartment (See page SF-83).
(b) Disconnect the E7 connector from the ECM.
CHECK:
Check the continuity between terminal SPD of the ECM con-
nector and body ground.
OK:
No continuity (1 MW or higher)
NG Repair or replace harness or connector.
OK
3 Check voltage between terminal SPD of ECM connector and body ground.
PREPARATION:
(a) Remove the glove compartment (See page SF-83).
(b) Disconnect the E7 connector from the ECM.
(c) Turn the ignition switch ON.
CHECK:
Measure the voltage between terminal SPD of the ECM con-
nector and body ground.
OK:
Voltage: 9 - 14 V
NG Check for open in harness and connector be-
tween J/B No.3 and ECM (See page IN-30).

DI6L1-01
I13634
Theft Deterrent ECU
IND 12
3A
J5
J/C7
3G7
W-B
A
A
IGW-B
V-W V10
IC1 22
21
C9
Security Indicator
T4 J/B No. 3
W-B
DI-532
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
688 Author
: Date
:
2001 AVALON (RM808U)
CIRCUIT INSPECTION
Indicator Light Circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is preparing to set, this circuit lights up the indicator light. When the system
has been set, it continuously turns the indicator light on for 0.75 secs. and turns it off for 1.25 secs., thus
blinking the indicator light.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check indicator light.
PREPARATION:
Remove combination meter.
CHECK:
Connect the positive (+) lead from the battery to terminal B22 and the negative (-) lead to terminal B21 of
combination meter connector then check indicator light comes ON.
(See combination meter on page BE-43)
NG Replace combination meter.
OK