2001 TOYOTA SEQUOIA key

± DIAGNOSTICSENGINE
DI±491
685 Author: Date:
2005 SEQUOIA (RM1146U)
MONITOR RESULT
Refer to page DI±26 for detailed information.
The test value and test limit information are described as shown in the following table. Check the monitor
result and test values after performing the monitor drive pattern (refer to ºConfirmation Monitorº).

MID (Monitor Identification Data) is assigned to each emissions±related component.

TID (Test Identification Data) is assigned to each test value.

Scaling is used to calculate the test value indicated on generic OBD ll scan tools.
EVAP±Key±off monitor
MIDTIDScalingDescription of Test ValueMinimum Test LimitMaximum Test Limit
$3D$C9Multiply by 0.01
(kPa)Test value for small leak (P0456):
Refer to pressure D*.Minimum test limit for small
leakMaximum test limit for small
leak
$3D$CAMultiply by 0.01
(kPa)Test value for gross leak (P0455):
Refer to pressure E*.Minimum test limit for gross
leakMaximum test limit for gross
leak
$3D$CBMultiply by 0.01
(kPa)Test value for vacuum pump stuck OFF
(P2401):
Refer to pressure A*.Minimum test limit for vacuum
pump stuck OFFMaximum test limit for vacuum
pump stuck OFF
$3D$CDMultiply by 0.01
(kPa)Test value for vacuum pump stuck ON
(P2402):
Refer to pressure A*.Minimum test limit for vacuum
pump stuck ONMaximum test limit for vacuum
pump stuck ON
$3D$CEMultiply by 0.01
(kPa)Test value for vent valve stuck OFF
(vent) (P2420):
Refer to pressure C*.Minimum test limit for vent
valve stuck ONMaximum test limit for vent
valve stuck ON
$3D$CFMultiply by 0.01
(kPa)Test value for vent valve stuck ON
(closed) (P2419):
Refer to pressure A*.Minimum test limit for vent
valve stuck OFFMaximum test limit for vent
valve stuck OFF
$3D$D0Multiply by 0.01
(kPa)Test value for 0.02 inch orifice low flow
(P043E):
Refer to pressure B*.Minimum test limit for 0.02
inch orifice low flowMaximum test limit for 0.02
inch orifice low flow
$3D$D1Multiply by 0.01
(kPa)Test value for 0.02 inch orifice high flow
(P043F):
Refer to pressure A*.Minimum test limit for 0.02
inch orifice high flowMaximum test limit for 0.02
inch orifice high flow
$3D$D4Multiply by 0.01
(kPa)Test value for purge VSV stuck close
(P0441):
Refer to pressure F*.Minimum test limit for purge
VSV stuck closeMaximum test limit for purge
VSV stuck close
$3D$D5Multiply by 0.01
(kPa)Test value for purge VSV stuck open
(P0441):
Refer to pressure E*.Minimum test limit for purge
VSV stuck openMaximum test limit for purge
VSV stuck open
$3D$D7Multiply by 0.01
(kPa)Test value for purge flow (P0441):
Refer to pressure G*.Minimum test limit for purge
flowMaximum test limit for purge
flow
* Pressure A to G are indicated as shown in the diagram below.

A23517
Key±off Monitor
Purge VSV
Vent Valve
Atmosphere (0 kPa)
Criterion 1 (±1.2 kPa)
Criterion 5 (±4.3 kPa)
Elapsed Time (Seconds)
104EVAP Pressure
(Reference) PumpMonitor Start
ON (Open)
ON (Close)
ON
A
BC
60D
GWithin 720 Criterion 2 (Criterion 4 x 0.2)
Criterion 3 (0.3 kPa)
Criterion 4EF
Criterion 6 (0.3 kPa)
1060
Purge Flow Monitor
Sequence
Purge VSV
Vent Valve
Criterion 7 (0.1 kPa)
EVAP Pressure
(Reference)
Criterion 8 (1kPa)If pressure change in sequence 1 is
greater than criterion 7, purge flow moni-
tor is completed (functioning normally). ON (Close) 12
ON (Open)
If pressure change in sequence 1 is
smaller than criterion 7, sequence 2 is
run.
If pressure change in sequence 2 is
smaller than criterion 8, purge flow is in-
sufficient.
DI±492
± DIAGNOSTICSENGINE
686 Author: Date:
2005 SEQUOIA (RM1146U)

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

DIDGG±01
± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)DI±1511
1705 Author: Date:
2005 SEQUOIA (RM1146U)
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the DATA LIST displayed on the hand±held tester, you can read the value of the switch, sensor, etc.
without parts removal. Reading the DATA LIST as the first step of troubleshooting is one way to shorten the
labor time.
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) Read the DATA LIST according to the display on the tester.
D±SEAT:
ItemMeasurement Item/
Display (Range)Normal Condition
RECLIN SW REARReclining switch signal (Rearward)/
ON or OFFON: Reclining switch (Rearward) is ON
OFF: Reclining switch (Rearward) is OFF
RECLIN SW FRONTReclining switch signal (Forward)/
ON or OFFON: Reclining switch (Forward) is ON
OFF: Reclining switch (Forward) is OFF
F VTCL SW DOWNFront vertical switch signal (Downward)/
ON or OFFON: Front vertical switch (Downward) is ON
OFF: Front vertical switch (Downward) is OFF
F VTCL SW UPFront vertical switch signal (Upward)/
ON or OFFON: Front vertical switch (Upward) is ON
OFF: Front vertical switch (Upward) is OFF
LIFTER SW DOWNLifter switch signal (Downward)/
ON or OFFON: Lifter switch (Downward) is ON
OFF: Lifter switch (Downward) is OFF
LIFTER SW UPLifter switch signal (Upward)/
ON or OFFON: Lifter switch (Upward) is ON
OFF: Lifter switch (Upward) is OFF
SLIDE SW REARSliding switch signal (Rearward)/
ON or OFFON: Sliding switch (Rearward) is ON
OFF: Sliding switch (Rearward) is OFF
SLIDE SW FRONTSliding switch signal (Forward)/
ON or OFFON: Sliding switch (Forward) is ON
OFF: Sliding switch (Forward) is OFF
POWER VOLTAGEPower supply for position control ECU & switch/
MIN: 0 V, MAX: 19.89 VWithin range from 11 V to 14 V
IG SWIgnition switch status/
ON or OFFON Ignition switch is ON
OFF: Ignition switch is OFF
KEY UNLOCK SWKey unlock warning switch signal/
ON or OFFON: Key is in ignition key cylinder
OFF: Key is not in ignition key cylinder
D±DOOR WARN SWDoor courtesy switch signal/
ON or OFFON: Driver side door is open
OFF: Driver side door is closed
PNP SWPark/neutral position switch signal/
ON or OFFON: Shift lever in neutral position
OFF: Shift lever in any position except neutral
M2 SWSeat memory switch M2 signal/
ON or OFFON: Seat memory switch M2 is ON
OFF: Seat memory switch M2 is OFF
M1 SWSeat memory switch M1 signal/
ON or OFFON: Seat memory switch M1 is ON
OFF: Seat memory switch M1 is OFF
SET SWSeat memory set switch signal/
ON or OFFON: Memory set switch is ON
OFF: Memory set switch is OFF
SLIDE POSSeat sliding position/
MIN: ±4096, MAX: 4096Within range from ±4096 to 4096
RECLN POSSeatback position/
MIN: ±4096, MAX: 4096Within range from ±4096 to 4096
F VTCL POSSeat front vertical position/
MIN: ±4096 MAX: 4096Within range from ±4096 to 4096
LIFTER POSSeat lifter position/
MIN: ±4096 MAX: 4096Within range from ±4096 to 4096
MEM M1 SW
Driving position memorized with seat memory
switch M1/
MEM or NOT MEMMEM: Memorized
NOT MEM: Not memorized

DI1AK±28
ENGINE IMMOBILISER Check SheetInspector 's
Name:
Customer 's Name
Date Vehicle
Brought InLicence Plate No. VIN
Production Date
Odometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs/ /
ContinuousIntermittent ( times a day)
DTC Check1st Time
2nd TimeNormal System Code
Trouble Code (Code )
Normal SystemCodeTrouble Code (Code )
Symptomskm
miles
Engine does not start.
Check ItemMalfunction
Indicator LampNormal
Remains ON Does not Light Up
Immobiliser is not set.
(Engine starts with key codes other than the registered key code.)
Security indicator is always ON.
Security indicator is always ON. (Although code has been registered in the
automatic registration mode, indicator is not OFF.)
Security indicator is OFF.
(When DTC of immobiliser is output)
Security indicator is OFF.
(When DTC of immobiliser is not output)
Security indicator is abnormally blinking.
No code is output. DI±1572
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1766 Author: Date:
2005 SEQUOIA (RM1146U)
CUSTOMER PROBLEM ANALYSIS CHECK

DI1AP±40
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±1573
1767 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
SymptomSuspected AreaSee page
Immobiliser is not set.
(Engine starts with key codes other than the registered key code.)1. Door courtesy light switch circuit (DTC12)
2. Transponder key ECUDI±1585
IN±35
Engine does not start.
1. Key
2. Key unlock warning switch circuit (DTC11)
3. Transponder key coil
4. Transponder key ECU
5. ECM*1
DI±1582
BE±143
IN±35
IN±35
Security indicator is always ON.
1. Security indicator
2. Security indicator light circuit
3. Transponder key ECU*2
DI±1597
IN±35
Security indicator is always ON.
(Although code has been registered in the automatic registration
mode, indicator is not OFF.)1. Transponder key coil
2. Transponder key ECUBE±143
IN±35
Security indicator is OFF.
(When DTC of immobiliser is output)1. Transponder key coil
2. Transponder key ECUBE±143
IN±35
Security indicator is OFF.
(When DTC of immobiliser is not output)1. Security indicator light circuit
2. Diagnosis circuit
3. Transponder key ECUDI±1597
DI±1599
IN±35
Security indicator is abnormally blinking.Transponder key ECUIN±35
No code is output.
1. Power source circuit
2. Diagnosis circuit
3. Transponder key ECUDI±1595
DI±1599
IN±35
*1 : Check that the key which did not start the engine has been registered, and that it is possible to start with
any other already registered key.
*2 : Finish the automatic registration mode because the mode might still be set.

DIABB±02
I24389
T16 Transponder Key ECU: DI±1574
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1768 Author: Date:
2005 SEQUOIA (RM1146U)
TERMINALS OF ECU
Symbols (Terminals No.)Wiring ColorConditionSpecified condition
+B e GND
(T16 ± 1 e T16 ± 14)W±R e OAlways10 to 14 V
IG e GND
(T16 ± 2 e T16 ± 14)B±O e OIgnition switch ON10 to 14 V
D e GNDWLOIgnition switch ON " 10 to 14 V " D e GND
(T16 ± 3 e T16 ± 14)W±L e OIgnition switch ON "
Connect terminals OP3 and CG of DLC310 to 14 V "
Below 2 V
CODE e GND
(T16 ± 4 e T16 ± 14)R±Y e OIgnition switch ON10 to 14 V
RXCK e GND
(T16 ± 5 e T16 ± 14)LG e OIgnition switch ON10 to 14 V
VC12 e AGND
(T16 ± 6 e T16 ± 12)GR±B e GR±LAlways10 to 14 V
IND e GNDLG BO
Security indicator light is on. (It flashes when the immobiliser
ti ti)3 to 6 V " IND e GND
(T16 ± 7 e T16 ± 14)LG±B e Osystem is operating.) "
Security indicator light is off.3 to 6 V "
Below 1 V
CTY e GNDGR LODriver's door closed " 10 to 14 V " CTY e GND
(T16 ± 8 e T16 ± 14)GR±L e ODriver s door closed "
Driver's door open10 to 14 V "
Below 1 V
KSW e GNDYGOKey unlock warning switch ON (Key inserted) " Below 1 V " KSW e GND
(T16 ± 9 e T16 ± 14)Y±G e OKey unlock warning switch ON (Key inserted) "
Key unlock warning switch OFF (Key not inserted)Below 1 V "
10 to 14 V
EFII e GND
(T16 ±10 e T16 ± 14)L±Y e OIgnition switch ON10 to 14 V
EFIO e GND
(T16 ±11 e T16 ± 14)P±G e OIgnition switch ON10 to 14 V
AGND e Body ground
(T16 ±12 e Body
ground)
GR±L e Body groundAlwaysBelow 1 V
TXCT e GND
(T16 ± 13 e T16 ± 14)Y±G e OIgnition switch ON10 to 14 V
GND e Body ground
(T16 ±14 e Body
ground)
O e Body groundAlwaysBelow 1 V

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.