2001 TOYOTA AVALON ignition

- BODY ELECTRICALTROUBLESHOOTING
BE-7
1611 Author
: Date
:
2001 AVALON (RM808U)
WIRELESS 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.
Some functions of wireless door lock control system do not operate.
HINT:
Troubleshooting of the wireless door lock control system is based on the premise that the door lock
control system is operating normally. Accordingly, before troubleshooting the wireless door lock control
system, first make certain that the door lock control system is operating normally.
If the trouble still reappears even though there are no abnormalities in any of the other circuits, then
check and replace the Wireless Door Lock Control Receiver as the last step.
SLIDING ROOF SYSTEM:
SymptomSuspect AreaSee page
Sliding roof system does not operate.
(Door Lock does not operate)1. SUN ROOF Fuse
2. GAUGE Fuse
3. Wire Harness-
-
-
Sliding roof system does not operate.
(Door Lock is normal)
1. Sliding Roof Control Switch
2. Sliding Roof Motor and Limit Switch
3. Sliding Roof Control Relay
4. Wire HarnessBE-103
BE-103
BE-103
-
Sliding roof system operates abnormally.
1. Sliding Roof Control Switch
2. Sliding Roof Motor and Limit Switch
3. Sliding Roof Control Relay
4. Wire HarnessBE-103
BE-103
BE-103
-
Sliding roof system stops operation half way.
(Stones of foreign material trapped in motor assembly)1. Sliding Roof Control Relay and Switch
2. Sliding Roof Motor and Limit Switch
3. Wire HarnessBE-103
BE-103
-
ºKey-of f Sliding Roofº operation does not operate.
1. DOOR Fuse
2. GAUGE Fuse
3. Ignition Switch
4. Body ECU
5. Wire Harness-
-
BE-16
BE-16
-
POWER SEAT CONTROL SYSTEM (w/o Driving position memory driver's seat):
SymptomSuspect AreaSee page
Power seat does not operate.
(Door lock system does not operate)1. DOOR Fuse
2. Wire Harness-
-
Power seat does not operate.
(Door lock system is normal)1. Power Seat Swtich (D,P)
2. Wire HarnessBE-105
-
ºSlide operationº does not operate.
1. Power Seat Switch (D, P)
2. Slide Motor (D, P)
3. Wire HarnessBE-16
BE-105
-
ºFront vertical Operationº does not operate.
1. Power Seat Switch (D, P)
2. Front Vertical Motor (D, P)
3. Wire HarnessBE-105
BE-105
-
ºRear verticalº does not operate.
1. Power Seat Switch
2. Rear Vertical Motor
3. Wire HarnessBE-105
BE-105
-
ºReclining Operationº does not operate.
1. Power Seat Switch (D, P)
2. Reclining Motor (D, P)
3. Wire HarnessBE-105
BE-105
-
(D): Driver's Seat
(P): Passenger's Seat

BE-8
- BODY ELECTRICALTROUBLESHOOTING
1612 Author
: Date
:
2001 AVALON (RM808U)
POWER MIRROR 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.
ELECTRO CHROMIC MIRROR SYSTEM
SymptomSuspect AreaSee page
Electro Chromic Inner Mirror does not operate.
1. ECU-IG Fuse
2. Elector Chromic Inner Mirror
3. Wire Harness
BE-120
SEAT HEATER SYSTEM:
SymptomSuspect AreaSee page
Seat heaters do not operate.
(Driver's and Passenger's)1. SEAT HEATER Fuse
2. Ignition Main Relay
3. Wire Harness-
BE-122
-
Driver's seat heater does not operate.
1. Seat Heater Switch (Driver's)
2. Seat Heater
3. Wire HarnessBE-122
BE-122
-
Passenger's seat heater does not operate.
1. Seat Heater Switch (Passenger's)
2. Seat Heater
3. Wire HarnessBE-122
BE-122
-
Seat Heater temperature is too hot.1. Seat HeaterBE-122
GARAGE DOOR OPENER SYSTEM
SymptomSuspect AreaSee page
The equipment of which code has been registered does not oper-
ate.1. Garage Door Opener
2. Wire Harness
3. *BE-170
LED does not light up. (Even though either switch is pressed.)1. Garage Door Opener
2. Wire HarnessBE-170
LED does not light up. (Only one switch is pressed.)1. Garage Door OpenerBE-170
* As the GARAGE DOOR OPENER on the vehicle side seems to be normal, check the OPENER on the
equipment side, of which code has been registered.

BE0IA-03
I12530
Wiper Motor
Washer Tank

Washer Motor
Combination Switch

Wiper and Washer Switch
Ignition Switch Driver Side Junction Block

WIP Fuse

IG1 Relay
- BODY ELECTRICALWIPER AND WASHER SYSTEM
BE-37
1641 Author
: Date
:
2001 AVALON (RM808U)
WIPER AND WASHER SYSTEM
LOCATION

BE2MA-01
I20790
Key Plate Inserted
ON
OFFWithin. 5 sec.
1 Key Plate Not Inserted
23 910Within. 30 sec.
Once Nine times
- BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE-91
1695 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
1. INSPECT WIRELESS DOOR LOCK DIAGNOSIS MODE
(a) Start up diagnosis mode.
HINT:
Follow the method below.
(1) Insert the ignition key into the ignition key cylinder.
(2) Remove the ignition key from the ignition key cylin-
der.
(3) Insert the key into the ignition switch.
(4) Turn the ignition switch ON once within 5 sec.
(5) Repeat turning the ignition switch OFF " ON 9
times within 30 sec.
(6) Enter the diagnosis mode, and make sure that the
buzzer sounds.
(b) Finishing the Diagnosis Mode.
During the Diagnosis mode, turn the ignition switch OFF
" ON to go back to the normal mode.
At this time make sure that the buzzer sounds.

I04152
Wire Harness Side
I04153
From Back Side
- BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE-95
1699 Author
: Date
:
2001 AVALON (RM808U)
8. Connector disconnected:
INSPECT WIRELESS DOOR LOCK CONTROL RE-
CEIVER CIRCUIT
Disconnect the connector from the receiver and inspect the
connector on the wire harness side, as shown.
Tester connectionConditionSpecified condition
1 - GroundConstantContinuity
7 - GroundConstantBattery positive voltage
If the circuit is not as specified, inspect the circuit connected to
other parts.
9. Connector connected:
INSPECT WIRELESS DOOR LOCK CONTROL RE-
CEIVER CIRCUIT
Connect the wire harness side connector to the receiver and in-
spect the wire harness side connector from the back side, as
shown.
Tester connectionConditionSpecified condition
3 - Ground
Ignition switch position OFF
Key removed
Transmitter OFF " ON
4.5 - 5.5 V " below 1 V
4 - Ground
Ignition switch position OFF
Key removed
Transmitter OFF
10 - 14 V
If circuit is as specified, replace the receiver.
If the circuit is not as specified, inspect the circuit connected to
other parts.

BE-98
- BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
1702 Author
: Date
:
2001 AVALON (RM808U)
Start registration of recognition code
The vehicle should be in the following conditions.

The key is not inserted in the ignition key cylinder.

Driver's door is OPEN. (Other doors are CLOSED)

Driver's door is UNLOCKED. (Other doors are CLOSED)
Insert the key into the ignition key cylinder, then pull it out.
Press the door lock control switch (for manual operation) 5 times to
LOCK/UNLOCK at approx. 1 sec. interval.
1st time 2nd time 3rd time 4th time 5th time
LOCK
OFF
UNLOCK
Approx.
1 sec.Approx.
1 sec.
Close the driver's door, then open it.
Again press the door lock control switch (for manual operation) 5 times to
LOCK/UNLOCK at approx. 1 sec. interval.
1st time 2nd time 3rd time 4th time 5th time
LOCK
OFF
UNLOCK
Approx.
1 sec.Approx.
1 sec.
Insert the key into the ignition key cylinder.
Within
40 secs.
Within
40 secs.

- BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE-99
1703 Author
: Date
:
2001 AVALON (RM808U)
Within
3 secs.
Turn the ignition switch from ON to LOCK at approx. 1 sec. interval 1 to 5 times to select the mode.
Pull out the key plate from the ignition key cylinder.
When add mode or rewrite mode
is selected.When confirmation
mode is selected.
ON
ONON
LOCK
LOCKLOCK
Approx.
1 sec.Approx.
1 sec. Approx. 1 sec.Approx.
1 sec.Approx.
1 sec.
Add mode
Rewrite modeConfirmation mode
ON - LOCK change occurs 1 time
ON - LOCK change occurs 2 timesON - LOCK change occurs 3 times
MPX body ECU automatically performs
the LOCK-UNLOCK operation once
or twice at 1 sec, interval to inform the
operator that either the add mode or
rewrite mode has been selected.
LOCK-UNLOCK occurs once
LOCK-UNLOCK occurs twice
Indicates that add mode has been selected.
Indicates that rewrite mode has been
selected.
1 sec.
LOCK
1 sec.1 sec.
LOCK
UNLOCK
UNLOCK
LOCK
2 secs.2 secs.
UNLOCK MPX body ECU automatically performs the
LOCK-UNLOCK operation 1 to 4 times at
2 sec. interval to inform the operator of
the number of the registered codes.
HINT:
When the number of the registered code
is 0, the operation is automatically
performed 5 times.
Example:
When the operation is performed twice, it
directs that 2 type of recognition code
have been registered.
1st time 2nd time
Registration of recognition code (Confirmation
mode and probation mode) is completed.
ON
LOCK
Approx.
1 sec.Approx.
1 sec.
Prohibition mode
ON - LOCK change occurs 5 times
When prohibition
mode is selected.

BE-100
- BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
1704 Author
: Date
:
2001 AVALON (RM808U)
MPX body performs operates LOCK-UNLOCK operation 5 times at a 1 sec.
interval to inform the operator that prohibition mode has been selected.
Press again either of switches on the transmitter.
MPX body ECU automatically performs LOCK-UNLOCK operation once or
twice at a 1 sec. interval to inform the operator that it has received the signal
from the transmitter.
LOCK-UNLOCK occurs once
LOCK-UNLOCK occurs twice Registration of recognition code is completed
Registration of recognition code has not been completed.

Recognition code received first time and second time did not match.
Proceed to continue registration
If even one of the following conditions is satisfied, registration of recognition
codes in completed.

40 secs. elapses since the MPX body ECU response.

The driver's door is closed.

The key plate is inserted in the ignition key cylinder.

4 types recognition codes are registration at one time.
Registration of recognition codes (add mode or rewrite mode) is completed.
Within
3 secs. Within
40 secs.
ON
LOCK
Approx.
1 sec.Approx.
1 sec.
When prohibition
mode is selected.
Press the lock and unlock switches on the transmitter simultaneously within 1.5 sec.
If they are not performed, the mode returns to the normal mode, then start with
ºStart registration of recognition codeº.
Proceed to finish registration
Within 40 secs.
Within 3 secs.