key battery TOYOTA SEQUOIA 2001 Service Repair Manual

B17431
AIDI
AIRP
AIRV
AIP
GE01
M+
M±
VTA1
VC
VTA2
FC
FPRACCR
ST1±
STP
E01
E02
E04
E05
E1
E03
ME01
EC
EOM
TC
CANL
CANH
IMI
IMODLC3
CG
TC
CANL
CANH ASVAI Driver To EFI Relay
To Battery
To Battery
To Battery To E2
TerminalTo E2
TerminalTo IG SW
Air Pump
Pressure
Sensor
Throttle Body
C/OPN Relay
Fuel Pump Relay
Fuel Pump Resister
Fuel PumpTransponder Key
Computre Stop Light SW
To IGN1 Fuse
To EFI
RelayACC Cut Relay
To Battery DI±8
± DIAGNOSTICSENGINE
202 Author: Date:
2005 SEQUOIA (RM1146U)

± DIAGNOSTICSENGINE
DI±53
247 Author: Date:
2005 SEQUOIA (RM1146U)A/C SIG
A/C signal: ON or OFFON: A/C ON'
ELECT LOAD SIGElectrical load signal:
ON or OFFON: Headlights or defogger is
turned ON'
STOP LIGHT SWStop lamp switch:
ON or OFFON: brake pedal is depressed.'
+BM
Whether or not electric throttle
control system power inputted:
ON or OFF
ON: Idling'
+BM VOLTAGE+BM voltage:
Min.: 0, Max.: 19.9210 to 15 V: IdlingETCS service data
BATTERY VOLTAGEBattery voltage:
Min.: 0 V, Max.: 65.535 V9 to 14 V: Idling'
ACTUATOR POWERActuator power supply:
ON or OFFON: IdlingETCS service data
ATM PRESSUREAtmospheric pressure:
Min.: 0 kPa, Max.: 150 kPaEquivalent to atmospheric pres-
sure (absolute pressure)'
SECOND AIR VSVSecondary air injection system
statusON: Secondary air injection sys-
tem operation'
ACT VSVA/C cut status for Active Test:
ON or OFF'Active Test support data
EVAP (Purge) VSVVSV status for EVAP control:
ON or OFF'Active Test support data
FUEL PUMP / SPDFuel pump/speed status:
ON or OFF'Active Test support data
VVT CTRL B1VVT control status:
ON or OFF'Active Test support data
VVT CTRL B2VVT control status:
ON or OFF'Active Test support data
VACUUM PUMP
Key±off EVAP system pump sta-
tus:
ON or OFF
'Active Test support data
EVAP VENT VAL
Key±off EVAP system vent valve
status:
ON or OFF
'Active Test support data
TC/TE1TC and TE1 terminal of DLC3:
ON or OFF''
VVTL AIM ANGL #1VVT aim angle (bank 1):
Min.: 0 %, Max.: 100 %0 %: IdlingVVT duty signal value during intru-
sive operation
VVTL AIM ANGL #2VVT aim angle (bank 1):
Min.: 0 %, Max.: 100 %0 %: IdlingVVT duty signal value during intru-
sive operation
VVT CHNG ANGL #1VVT change angle:
Min.: 0FR, Max.: 60FR0 to 5 FR: IdlingDisplacement angle during intru-
sive operation
VVT CHNG ANGL #2VVT change angle:
Min.: 0FR, Max.: 60FR0 to 5 FR: IdlingDisplacement angle during intru-
sive operation
VVT OCV DUTY B1VVT OCV operation duty:
Min.: 0 %, Max.: 100 %0 %: IdlingRequested duty value for intrusive
operation
VVT OCV DUTY B2VVT OCV operation duty:
Min.: 0 %, Max.: 100 %0 %: IdlingRequested duty value for intrusive
operation
FC IDLFuel cut idle:
ON or OFFON: Fuel cut operation
FC IDL = ºONº when throttle valve
fully closed and engine speed over
2,800 rpm

± DIAGNOSTICSENGINE
DI±261
455 Author: Date:
2005 SEQUOIA (RM1146U)
MONITOR STRATEGY
Purge VSV stuck open
Related DTCsP0441Purge VSV stuck closedRelated DTCsP0441
Purge flow
Required sensors/componentsPurge VSV, Pump module
Frequency of operationOnce per driving cycle
DurationPurge VSV stuck open and closed: Within 2 min. (varies with amount of fuel in tank)
Purge flow: Within 30 sec.
MIL operation2 driving cycle
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever these
DTCs are not presentSee page DI±18
Purge VSV stuck open and closed:
Following values are when atmospheric is
760 mmHg (100 kPa)±
EVAP key±off monitor runs when all of the
following conditions met:±
Atmospheric pressure525 to 825 mmHg (70 to 110 kPa)
Battery voltage10.5 V±
Vehicle speed±4 km/h (2.5 mph)
Ignition switchOFF
Engine conditionNot running
Time after engine stopped5 hours
FTP sensor malfunction (P0450, P0452,
P0453)Not detected
Purge VSVNot operated by scan tool
Vent valveNot operated by scan tool
Leak detection pumpNot operated by scan tool
Both of the following conditions are met
before IG switch OFFCondition 1 and 2
1. Duration that vehicle is driven5 min.±
2. Purge flowExecuted
ECT4.4 to 35°C (40 to 95°F)
IAT4.4 to 35°C (40 to 95°F)
Example of re±start time±
First time7 hours
Second time9 hours and 30 min.
Key±off monitor sequence1 to 8
1. Atmospheric pressure±
Next sequence is run if following condition
set±
Atmospheric pressure change for 10 sec.±2.25 mmHg (0.3 kPa) for 1 sec.
2. First reference pressure±

DI±276
± DIAGNOSTICSENGINE
470 Author: Date:
2005 SEQUOIA (RM1146U) Atmospheric pressure
525 to 825 mmHg (70 to 110 kPa)
Battery voltage10.5 V±
Vehicle speed±4 km/h (2.5 mph)
Ignition switchOFF
Engine conditionNot running
Time after engine stopped5 hours
FTP sensor malfunction (P0450, P0452,
P0453)Not detected
Purge VSVNot operated by scan tool
Vent valveNot operated by scan tool
Leak detection pumpNot operated by scan tool
Both of the following conditions are met
before IG switch OFFCondition 1 and 2
1. Duration that vehicle is driven5 min.±
2. Purge flowExecuted
ECT4.4 to 35°C (40 to 95°F)
IAT4.4 to 35°C (40 to 95°F)
Example of re±start time±
First time7 hours
Second time9 hours and 30 min.
Key±off monitor sequence1 to 8
1. Atmospheric pressure±
Next sequence is run if following condition
set±
Atmospheric pressure change for 10 sec.±2.25 mmHg (0.3 kPa) for 1 sec.
2. First reference pressure±
Next sequence is run if all of following
conditions setCondition 1, 2 and 3
1. FTP when 4 sec. after reference pres-
sure measurement±±7.5 mmHg (±1 kPa)
2. Reference pressure±36.38 to ±7.93 mmHg (±4.85 to ±1.057 kPa)
3. Reference pressureSaturated
3. Vent valve stuck closed check±
Next sequence is run if following condition
set±
FTP change for 10 sec. after vent valve
ON (closed)2.25 mmHg (0.3 kPa)±
4. Vacuum introduction and leak±
Next sequence is run if both of following
conditions setCondition 1 and 2
1. Vacuum introduction time±15 min.
2. FTPFTP was saturated
5. Purge VSV stuck closed check±
Next sequence is run if following condition
set±
FTP change for 10 sec. after purge VSV
ON (open)2.25 mmHg (0.3 kPa)±

DI±414
± DIAGNOSTICSENGINE
608 Author: Date:
2005 SEQUOIA (RM1146U)
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever these
DTCs are not presentSee page DI±18
Following values are when atmospheric is
760 mmHg (100 kPa)±
EVAP key±off monitor runs when all of the
following conditions met:±
Atmospheric pressure525 to 825 mmHg (70 to 110 kPa)
Battery voltage10.5 V±
Vehicle speed±4 km/h (2.5 mph)
Ignition switchOFF
Engine conditionNot running
Time after engine stopped5 hours
FTP sensor malfunction (P0450, P0452,
P0453)Not detected
Purge VSVNot operated by scan tool
Vent valveNot operated by scan tool
Leak detection pumpNot operated by scan tool
Both of the following conditions are met
before IG switch OFFCondition 1 and 2
1. Duration that vehicle is driven5 min.±
2. Purge flowExecuted
ECT4.4 to 35°C (40 to 95°F)
IAT4.4 to 35°C (40 to 95°F)
Example of re±start time±
First time7 hours
Second time9 hours and 30 min.
Key±off monitor sequence1 to 8
1. Atmospheric pressure±
Next sequence is run if following condition
set±
Atmospheric pressure change for 10 sec.±2.25 mmHg (0.3 kPa) for 1 sec.
2. First reference pressure±
Next sequence is run if all of following
conditions setCondition 1, 2 and 3
1. FTP when 4 sec. after reference pres-
sure measurement±±7.5 mmHg (±1 kPa)
2. Reference pressure±36.38 to ±7.93 mmHg (±4.85 to ±1.057 kPa)
3. Reference pressureSaturated
3. Vent valve stuck closed check±
Next sequence is run if following condition
set±
FTP change for 10 sec. after vent valve
ON (closed)2.25 mmHg (0.3 kPa)±

A23666
Purge VSV
Vent Valve
Vacuum Pump
EVAP Pressure
Positive
Leak Pressure
sec NegativeONON
Sequence
TimeA
10
sec60
Within 15 minutesON
First 0.02 inch
BCD
EVAP Pressure when Vent Valve Stuck OFF (vent):
OK
Malfunction
ON: Open
OFF: Closed
OFF: Vent ON: Closed
10
Standard
sec60
E
± DIAGNOSTICSENGINE
DI±419
613 Author: Date:
2005 SEQUOIA (RM1146U)
(b) P2420: Vent valve stuck open (vent)
In operation C, the vent valve turns ON (closes) and the EVAP (Evaporative Emission) system pressure is
then measured by the ECM, using the pressure sensor, to conduct an EVAP leak check. If the pressure does
not increase when the vent valve is open, the ECM interprets this as the vent valve being stuck open. The
ECM illuminates the MIL and sets the DTC.
MONITOR STRATEGY
RltdDTCP2419Vent valve stuck openRelated DTCsP2420Vent valve stuck closed
Required sensors/componentsVent valve
Frequency of operationOnce per driving cycle
Duration8 sec. (P2419), 10 sec. (P2420)
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever these
DTCs are not presentSee page DI±18
Following values are when atmospheric is
760 mmHg (100 kPa)±
EVAP key±off monitor runs when all of the
following conditions met:±
Atmospheric pressure525 to 825 mmHg (70 to 110 kPa)
Battery voltage10.5 V±
Vehicle speed±4 km/h (2.5 mph)
Ignition switchOFF
Engine conditionNot running
Time after engine stopped5 hours

± DIAGNOSTICSENGINE
DI±449
643 Author: Date:
2005 SEQUOIA (RM1146U)
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever these
DTCs are not presentSee page DI±18
Following values are values when atmo-
spheric is 760 mmHg (100 kPa)±
EVAP key±off monitor runs when all of the
following conditions met:±
Atmospheric pressure525 to 825 mmHg (70 to 110 kPa)
Battery voltage10.5 V±
Vehicle speed±4 km/h (2.5 mph)
Ignition switchOFF
Engine conditionNot running
Time after engine stopped5 hours
FTP sensor malfunction (P0450, P0452,
P0453)Not detected
Purge VSVNot operated by scan tool
Vent valveNot operated by scan tool
Leak detection pumpNot operated by scan tool
Both of the following conditions are met
before IG switch OFFCondition 1 and 2
1. Duration that vehicle is driven5 min.±
2. Purge flowExecuted
ECT4.4 to 35°C (40 to 95°F)
IAT4.4 to 35°C (40 to 95°F)
Example of re±start time±
First time7 hours
Second time9 hours and 30 min.
Key±off monitor sequence1 to 8
1. Atmospheric pressure±
Next sequence is run if following condition
set±
Atmospheric pressure change for 10 sec.±2.25 mmHg (0.3 kPa) for 1 sec.
2. First reference pressure±
Next sequence is run if all of following
conditions setCondition 1, 2 and 3
1. FTP when 4 sec. after reference pres-
sure measurement±±7.5 mmHg (±1 kPa)
2. Reference pressure±36.38 to ±7.93 mmHg (±4.85 to ±1.057 kPa)
3. Reference pressureSaturated
3. Vent valve stuck closed check±
Next sequence is run if following condition
set±
FTP change for 10 sec. after vent valve
ON (closed)2.25 mmHg (0.3 kPa)±
4. Vacuum introduction and leak±

DIDDZ±01
I28552
Position Control ECU
& Switch Assy
Park/Neutral
Position Switch
Combination
MeterPower Seat Motor
Driver Side (Reclining)
Power Seat Motor
Driver Side (Slide) Power Seat Motor
Driver Side (Front Vertical) Power Seat Motor
Driver Side (Lifter)
Front Door Courtesy
Light Switch Assy Seat Memory Switch Lumbar
Support
Control
MotorLumbar Support
Control Switch To Battery
To Battery To Ignition SwitchECU±B
PWR SEATECU±IGSYSB
IG
+BRCL+
RCL±
LFT+
LFT±
FRV+
FRV±
SLD+
SLD±
SW1
SW2
MMRYDCTY
Key Unlock
Warning Switch
KSW
Body ECU
BEANTo Ignition Switch
± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)DI±1503
1697 Author: Date:
2005 SEQUOIA (RM1146U)
SYSTEM DIAGRAM

DID50±01
C00083DLC3
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±1575
1769 Author: Date:
2005 SEQUOIA (RM1146U)
DIAGNOSIS SYSTEM
1. DIAGNOSIS SYSTEM
(a) Inspect the battery voltage.
Battery voltage: 11 to 14 V
If voltage is below 11 V, recharge the battery before proceeding.
(b) Check the DLC3.
The transponder key ECU uses ISO 9141±2 for commu-
nication. The terminal arrangement of the DLC3 complies
with SAE J1962 and matches the ISO 9141±2 format.

I24834
F10
FL Block1J 1CInstrument Panel J/B
IG2B±R I18
Ignition SW
Battery 56
B B W±R AM22
17
IGN1
1C1E
7
3
4 5Transponder Key ECU
IG 2
2CT16
2DB±O
1B±O
W±R
1 AM2 Engine Room J/BSub J/B No. 4
212
4D 4A
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±1587
1781 Author: Date:
2005 SEQUOIA (RM1146U)
Code 13 is not output
CIRCUIT DESCRIPTION
The transponder key ECU outputs DTC 13 when the ignition switch is ON.
HINT:
DTC 13 is a normal code.
DTC No.DTC Detecting ConditionTrouble Area
13Ignition switch operates normally.

Ignition switch

Transponder key ECU

Wire harness
WIRING DIAGRAM
DIABF±04