Page 1068 of 1897
DI6LB-01
D01054
E4
E5
E7E8 E6
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI-603
759 Author: Date:
2001 AVALON (RM808U)
TERMINALS OF ECM
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
CODE e E1
(E7-28 e E5-17)P-G e BRIgnition Switch ON10 - 14
TXCT e E1
(E7-18 e E5-17)L-Y e BRIgnition Switch ON10 - 14
IGSW e E1
(E8-2 e E5-17)B-O e BRIgnition Switch ON10 - 14
RXCK e E1
(E7-19 e E5-17)L-O e BRIgnition Switch ON10 - 14
Page 1075 of 1897
I14526
Power Seat ECU
Battery 7
IG 13
8
R-B
43 1
FL MAIN 2
B-L AM1
B FL Block
IG
W-BR-B R-B
Ignition Switch
4
2
W-L W-L
B
ALTBC1 ID1 2
4 1D
1C 1BIG1 RELAY
GAUGE NO. 1
1
2
1
1 55
2H
2G1
F81
F6
I15 W-R
7
IF1P21
AM1 IG1 Driver Side J/B
Engine Room R/B No. 5
Engine Room J/B 3 1
1G
F10
1
W DI-508
- DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)
664 Author: Date:
2001 AVALON (RM808U)
Ignition Switch Circuit
CIRCUIT DESCRIPTION
This circuit sends an ignition switch ON or OFF signal to the ECU.
WIRING DIAGRAM
DI0GF-09
Page 1076 of 1897
I11595
(+)
(-)
13 (IG)
- DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)DI-509
665 Author: Date:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check voltage between terminal IG of Seat Position Control ECU connector and
body ground.
PREPARATION:
Remove Seat Position Control ECU with connectors still con-
nected.
CHECK:
Measure voltage between terminal IG of Seat Position Control
ECU connector and body ground when ignition switch is ON
and OFF.
OK:
Ignition switchVoltage
ON10 ~ 14 V
OFF0 V
OK Proceed to next circuit inspection shown in
problem symptom table (See page DI-493).
NG
2 Check GAUGE fuse.
NG Check for short in all the harness and compo-
nents connected to GAUGE fuse.
NG
Check and repair harness or connector be-
tween Seat Position Control ECU and battery.
Page 1095 of 1897
DI0FV-08
- DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)DI-493
649 Author: Date:
2001 AVALON (RM808U)
PROBLEM SYMPTOMS TABLE
Perform troubleshooting of the circuits for the applicable problem symptom in the order given in the chart
below. Proceed to the page located for each circuit.
HINT:
If the instruction ºProceed to next circuit inspection shown on problem symptom tableº is given in the
flow chart for each circuit, proceed to the circuit with the next highest number in the table to continue
the check.
If the trouble still reappears even though there are no abnormalities in any of the other circuits, then
check and replace the Seat Position Control ECU as the last step.
SymptomSuspect AreaSee page
Both manual & return functions do not operate(All functions).
3. +B power source circuit
4. Power seat control switch circuit
5. Motor circuit
6. Power seat control ECUDI-494
DI-510
DI-500
IN-30
Both manual & return functions do not operate(One function only).1. Motor circuit
2. Power seat control ECUDI-500
IN-30
One or all functions do not operate for manual operation only.1. Power seat control switch circuit
2. Power seat control ECUDI-510
IN-30
Memory function does not operate.
1. Power seat memory switch circuit
2. Ignition switch circuit
3. Power seat control ECUDI-510
DI-508
IN-30
Return operation does not stop when brake pedal is depressed.1. Stop light switch circuit
2. Power seat control ECUDI-662
IN-30
Only return function does not operate or operates a little, then
stops (All return functions).
1. Power seat memory switch circuit
2. ECU power source circuit
3. Position sensor power source circuit
4. Power seat control ECUDI-513
DI-497
DI-504
IN-30
Only return function does not operate or operates a little, then
stops (Only one return function).1. Position sensor circuit
2. Power seat control ECUDI-506
IN-30
Page 1096 of 1897
DI6KY-01
I11581
P20P21
- DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)DI-491
647 Author: Date:
2001 AVALON (RM808U)
TERMINALS OF ECU
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
SSFV e SGND
(P21-4 e P21-19)L-B e BRFront vertical operation0 V e 8 V
SSRL e SGND
(P21-17 e P21-19)L-W e BRRear vertical operation0 V e 8 V
SSRR e SGND
(P21-16e P21-19)L-R e BRReclining operation0 V e 8 V
PVCC e SGND
(P21-5 e P21-19)R e BRPower seat operation8 V
FDWN e Body Ground RBSeat lowered using front vertical SWBelow 1 VFDWN e Body Ground
(P21-24 eBody Ground)R-BOthers10 - 14 V
IG e Body Ground
(P21-13 eBody Ground)R-BIgnition SW ON10 - 14 V
SYSB e Body Ground
(P21-25 eBody Ground)W-GAlways10 - 14 V
MPX1Bd G dMultiplex communication circuit signals0 V e 12 VMPX1 e Body Ground
(P21-14 eBody Ground)G-WOthersResistance
(Approx. 2.5 kW)
SGND e Body Ground
(P21-19 eBody Ground)BRAlwaysBelow 1 V
SSRS e SGND
(P21-3 eP21-19)L e BRSlide operation0 V e 8 V
SLDF e Body Ground BSeat moved forward using slide SWBelow 1 VSLDF e Body Ground
(P21-6 eBody Ground)BOthers10 - 14 V
SLDR e Body Ground BRSeat moved to rear using slide SWBelow 1 VSLDR e Body Ground
(P21-8 eBody Ground)B-ROthers10 - 14 V
LUP e Body Ground RWSeat raised using rear vertical SWBelow 1 VLUP e Body Ground
(P21-22 eBody Ground)R-WOthers10 - 14 V
LDWN e Body Ground RYSeat lowered using rear vertical SWBelow 1 VLDWN e Body Ground
(P21-1 1 eBody Ground)R-YOthers10 - 14 V
FUP e Body Ground BYSeat raised using front vertical SWBelow 1 VFUP e Body Ground
(P21-23 eBody Ground)B-YOthers10 - 14 V
RCLF e Body Ground GBSeat moved forward using reclining SWBelow 1 VRCLF e Body Ground
(P21-10 eBody Ground)G-BOthers10 - 14 V
RCLR e Body Ground GSeat moved to rear using reclining SWBelow 1 VRCLR e Body Ground
(P21-12 eBody Ground)GOthers10 - 14 V
RCL- e GND RBWBSeat moved to rear using reclining SW10 - 14 VRCL e GND
(P20-1 e P20-7)R-B e W-BOthersBelow 1 V
Page 1100 of 1897
FI1390AB0118
R13006AB0119H01002H07478
D SquibSpiral
Cable
Airbag
Sensor
Assembly
E1TcON
or
DTC B0100/13
DLC1"u
ACC
DI-364
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
520 Author: Date:
2001 AVALON (RM808U)
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
(b) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ACC or ON and wait at least for
20 seconds.
(b) Clear the DTC stored in memory (See page DI-349).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(e) Check the DTC (See page DI-349).
OK:
DTC B0100/13 is not output.
HINT:
Codes other than code B0100/13 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
Page 1101 of 1897
AB0118
R13006AB0119FI1390
H01003H01136
D SquibSpiral
CableAirbag
Sensor
Assembly
E1 TcACC ON
or
DTC B0100/13
" u
DLC1
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-365
521 Author: Date:
2001 AVALON (RM808U)
4 Check D squib.
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Connect the steering wheel pad connector.
(d) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(b) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(c) Clear the DTC stored in memory (See page DI-349).
(d) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(e) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(f) Check the DTC (See page DI-349).
OK:
DTC B0100/13 is not output.
HINT:
Codes other than code B0100/13 may be output at this time, but
they are not relevant to this check.
NG Replace steering wheel pad.
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check.
Page 1104 of 1897
AB0118
R13006AB0069
AB0119W02044
H01002
H01140
D SquibSpiral
CableAirbag
Sensor
Assembly
E1TcACCON
or
DTC B0101/14 DLC1"u
D+D-
DI-368
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
524 Author: Date:
2001 AVALON (RM808U)
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
(b) Using a service wire, connect D+ and D- of the connector
(on the spiral cable side) between the spiral cable and the
steering wheel pad.
(c) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(b) Clear DTC stored in memory (See page DI-349).
(c) Turn ignition switch to LOCK, and wait at least for 20 se-
conds.
(d) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(e) Check DTC (See page DI-349).
OK:
DTC B0101/14 is not output.
HINT:
Codes other than code B0101/14 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
