2001 TOYOTA SEQUOIA battery

± DIAGNOSTICSENGINE
DI±267
461 Author: Date:
2005 SEQUOIA (RM1146U) Pressure sensor chattering, low/high voltage:
Battery voltage8 V±
Ignition switchON
StarterOFF
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
Pressure sensor noise:
Frequency that FTP change is 0.3 kPa or more10 times or more for 10 sec.
Pressure sensor stuck:
FTP change for 10 sec. during EVAP monitor (0.02 inch
reference pressure)Less than 4.9 mmHg (0.65 kPa)
Pressure sensor chattering:
Pressure sensor voltageLess than 0.45 V, or more than 4.9 V
Pressure sensor low voltage:
Pressure sensor voltageLess than 0.45 V
Pressure sensor high voltage:
Pressure sensor voltageMore than 4.9 V

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)±

B17411
SPD(+) E6
E5
E1
AT7809
4 to 6 V
Turn the Wheel
3
2
1
I25536
Component Side Connector:
Vehicle Speed Sensor
± DIAGNOSTICSENGINE
DI±281
475 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check voltage between terminal SPD and E1 of ECM connector.
PREPARATION:
(a) Shift the shift lever to neutral.
(b) Jack up the rear wheel on one side.
(c) Turn the ignition switch ON.
CHECK:
Measure the voltage between the specified terminal of the E5
and E6 ECM connector when the wheel is turned slowly.
OK:
Standard:
Tester ConnectionSpecified Condition
SPD (E5±8) ± E1 (E6±1)Generated intermittently
HINT:
The output voltage should fluctuate up and down similarly to the
diagram on the left when the wheel is turned slowly.
OK Replace ECM (See page SF±80).
NG
3 Check vehicle speed sensor.
PREPARATION:
(a) Disconnect the vehicle speed sensor connector.
(b) Connect the battery positive (+) lead to terminal 1 and the
battery negative (±) lead to terminal 2.
(c) Connect the tester positive (+) lead to terminal 3 and the
tester negative (±) lead to terminal 2.
(d) Shift the shift lever to N position.
(e) Rotate the shaft.
CHECK:
Check that there is voltage change between terminals 2 and 3.
OK:
Standard: 0 V to 10 V or more
NG Replace vehicle speed sensor.
OK

I18
Ignition
SW
A23552
ECM
STOPSTP
ALT
BatteryE4
16 G±Y
J/C1 S14 Stop Light SW
2
G±W
BR7
Stop
Light
LH
R8
Stop
Light
RH3
5
8W±R
A W
High
Mounted
Stop Light
W±B 1L
1 1F
7
F10
Fusible
Link
BlockInstrument
Panel J/B1
4EG±Y
4B8
Brake Inhibit Relay
G±Y 4
See VSC System 2
W
J19
J/CB
C
IC
CC
C
4
BD1
1
22
1H9 H9(*1)
(*2) (*1)(*2)
BD2
12 J/C
A1
4
G±W IG2
*1: w/o Rear Spoiler
*2: w/ Rear Spoiler AM2
To Towing
Converter Relay
W±BST1±
E4 15
4C 4A1
1
3
L±B Sub J/B No.4
2
IGN1 B±O2
4D2
4A
1E 17
2 1C
1 A
J44J11
J/C J10
J
J33
J34 C
3
IJ
52C
2D 11
AM2
B W±RB±R
6
Instrument
Panel J/B
BP1
4 G±W B±O
G±W
G±W G±WSub J/B No.4
J10
J45
4
BJ J57
J/CA
W±BW±B G±W
High
Mounted
Stop LightG±WJ20
J/C G±W H
Engine Room
J/B DI±284
± DIAGNOSTICSENGINE
478 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

DI±292
± DIAGNOSTICSENGINE
486 Author: Date:
2005 SEQUOIA (RM1146U)
DTC P0560 System Voltage
MONITOR DESCRIPTION
The battery supplies electricity to the ECM even when the ignition switch is OFF. This electricity allows the
ECM to store data such as DTC history, freeze frame data, fuel trim values, and other data.
If the battery voltage falls below a minimum level, the ECM will conclude that there is a fault in the power
supply circuit. The next time the engine starts, the ECM will turn on the MIL and a DTC will be set.
DTC No.DTC Detecting ConditionTrouble Area
P0560Open in back up power source circuit

Open in back±up power source circuit

EFI fuse

ECM
HINT:
If DTC P0560 present, the ECM will not store another DTC.
MONITOR STRATEGY
Related DTCsP0560System voltage malfunction
Required sensors/componentsECM
Frequency of operationContinuous
Duration3 sec.
MIL operationImmediate (*1)
Sequence of operationNone
*1: The DTC is set immediate. The MIL will be illuminated after the engine starts in the next time.
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever this DTC is
not presentSee page DI±18
Stand±by RAMInitialized
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
Battery voltageLess than 3.5 V
DICF7±02

A05652A18100
Battery2DEFI No. 1
B±Y
E4ECM
BATT 73
2H 1
IA411
B±Y B
F10
Fusible Link
Block 4Engine Room J/B
5
B12
± DIAGNOSTICSENGINE
DI±293
487 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand-held tester. Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was
running or stopped, if the engine was warmed up or not, if the air±fuel ratio was lean or rich, as well as other
data from the time when a malfunction occurred.
1 Check battery voltage.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch to ON.
(c) Select the item: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / BATTERY VOLTAGE.
CHECK:
Read the battery voltage on the hand±held tester
RESULT:
Battery voltageProceed to
0 VA
Except 0 VB
B Go to step 5.
A

A21381
Engine Room J/B
EFI No. 1 Fuse
B17417
E4
BATT ECM Connector
± DIAGNOSTICSENGINE
DI±295
489 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check for open and short in harness and connector between ECM and EFI No. 1
fuse, EFI No. 1 fuse and battery.
PREPARATION:
(a) Remove the EFI No. 1 fuse from the engine room J/B.
(b) Disconnect the E4 ECM connector.
CHECK:
Measure the resistance between the wire harness side connec-
tor.
OK:
Standard:
Tester ConnectionSpecified Condition
Engine Room J/B (EFI No. 1 fuse
terminal 2) ± BATT (E4±3)Below 1 W
Engine Room J/B (EFI No. 1 fuse
terminal 2) or BATT (E4±3) ±
Body ground
10 kW or higher
NG Repair or replace harness or connector.
OK
5 Check the battery (See page CH±1).
NG Replace battery.
OK
Check and replace engine room J/B.

DI±298
± DIAGNOSTICSENGINE
492 Author: Date:
2005 SEQUOIA (RM1146U)
DTC P0617 Starter Relay Circuit High
MONITOR DESCRIPTION
While the engine is being cranked, the battery positive voltage is applied to terminal STA of the ECM.
If the vehicle is being driven and the ECM detects the starter control signal (STA), the ECM concludes that
the starter control circuit is malfunctioning. The ECM will turn on the MIL and a DTC is set.
DTC No.DTC Detection ConditionTrouble Area
P0617
When all conditions (a), (b) and (c) are satisfied for 20 seconds
with battery (+B) voltage 10.5 V or more
(a) Vehicle speed
20 km/h (12.4 mph)
(b) Engine revolution
1,000 rpm
(c) STA signal ON
Park/neutral position switch

Starter relay circuit

Ignition switch

ECM
MONITOR STRATEGY
Related DTCsP0617Starter signal error
Rid / tMain sensors/componentsStarter signalRequired sensors/componentsRelated sensors/componentsVehicle speed sensor, Engine speed sensor
Frequency of operationContinuous
Duration20 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever this DTC is
not presentSee page DI±18
Battery voltage10.5 V±
Vehicle speed20 km/h (12.4 mph)±
Engine RPM1,000 rpm±
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
Starter signalON (at ºmore than 20 km/h (12.4 mph) and more than 1,000 rpmº)
DID8D±01