engine TOYOTA SEQUOIA 2001 Service Manual PDF

START
Confirm vehicle VIN
Preparation:
1. Connect hand±held tester to DLC3
2. Turn ignition switch to ON
3. Turn tester ON
Hand±held tester operation:
Write:
Menu Screen:
This function overwrites the
following VIN with a new VIN.
*********************************
[ VIN ]
*********************************
[YES] to Continue
[NO] to EXIT
To Menu ScreenContinued on next page
NOTICE
Do you wish to continue?
[YES]
[NO] 1. Select DIAGNOSIS
2. Select ENHANCED OBD ll
3. Select VIN
1. VIN READ 1. VIN READVIN
Select VIN WRITE
[YES] or [NO]
[YES] 2. VIN WRITE
To Menu
Screen
[NO]
CONFIRMATION
This function will erase the
DTCs automatically after
writing the VIN.
Do you wish to continue?
[YES]
17±digit VIN displayed VIN Previously Stored
DI±16
± DIAGNOSTICSENGINE
210 Author: Date:
2005 SEQUOIA (RM1146U)
4. WRITE VIN
(a) Write VIN using the hand±held tester.

Your VIN is incorrect.
Please enter the VIN again.
Input a new VIN
PRESS [ENTER] If you want to clear the VIN,
press [NO] key.
To Menu Screen
Writing Successful
[ENTER] Continued from previous page
WRITING COMPLETE
NOW WRITING
Input Error
INPUT ERROR
[EXIT] to RETURN
[EXIT]
WRITING FAILED
Turn IG OFF, then ON,
Please try again.
PRESS [EXIT]
[EXIT]Writing Error
SET NEW VIN
Press [RIGHT]/[LEFT] to shift
the cursor right/left.
Press [UP]/[DOWN] to
increase/decrease value.
Or, input digit with the 10 key.
PRESS [ENTER]CONFIRMATION
PRESS [ENTER] Vehicle is stopped.
New Registration
[ENTER]
[ENTER]
PRESS [ENTER]
Communication Error
[ENTER]
COMMUNICATION ERROR
PRESS [EXIT] Turn IG OFF, then ON.
VIN input method
The following VIN has been
written correctly.
The DTCs have been erased
correctly.
To Menu Screen To Menu Screen
[EXIT] Input Instructions
Engine is not running.
± DIAGNOSTICSENGINE
DI±17
211 Author: Date:
2005 SEQUOIA (RM1146U)

DID7U±01
A21570
DI±18
± DIAGNOSTICSENGINE
212 Author: Date:
2005 SEQUOIA (RM1146U)
LIST OF DISABLE A MONITOR
HINT:
This table indicates ECM monitoring status for the items in the upper columns if the DTCs in each line on
the left are being set.
As for the ºXº mark, when the DTC on the left is stored, detection of the DTC in the upper column is not per-
formed.

A21571
± DIAGNOSTICSENGINE
DI±19
213 Author: Date:
2005 SEQUOIA (RM1146U)

A21572
DI±20
± DIAGNOSTICSENGINE
214 Author: Date:
2005 SEQUOIA (RM1146U)

A21573
± DIAGNOSTICSENGINE
DI±21
215 Author: Date:
2005 SEQUOIA (RM1146U)

A21575
DI±22
± DIAGNOSTICSENGINE
216 Author: Date:
2005 SEQUOIA (RM1146U)

A21576
± DIAGNOSTICSENGINE
DI±23
217 Author: Date:
2005 SEQUOIA (RM1146U)

DID7V±01
01 BANK 1 ± SENSOR 1O2 SENSOR TEST
02 BANK 1 ± SENSOR 2
03 BANK 2 ± SENSOR 1
04 BANK 2 ± SENSOR 2
A21190
O2S TEST RESULT Screen DI±24
± DIAGNOSTICSENGINE
218 Author: Date:
2005 SEQUOIA (RM1146U)
O2S TEST RESULT
INTRODUCTION
The O2S TEST RESULT refers to the results of the engine con-
trol module (ECM) when it monitors the oxygen sensor (O2S),
and it can be read using the hand±held tester or the generic
OBD II scan tool. Based on this, you can find the O2S's condi-
tions.
The ECM monitors the O2S in the various items. You can read
the monitor result (TEST DATA) of each monitor item using the
O2S TEST RESULT. However, the output value of the TEST
DATA is the latest ºsnapshotº value that is taken after monitor-
ing and therefore it is not dynamic.
In this repair manual, the description of the O2S TEST RESULT
(for O2S related DTCs) are written in a table.
This table consists of 5 items:
(1) TEST ID (a code applied to each TEST DATA)
(2) Description of TEST DATA
(3) Conversion Factor (When Conversion Factor has a
value written in the table, multiply the TEST DATA
value appearing on the scan tool by the Conversion
Factor value. The result will be the required value.)
(4) Unit
(5) Standard Value
If the TEST DATA value appearing on the scan tool is out of the
standard value, the O2S is malfunctioning. If it is within the stan-
dard value, the O2S is functioning normally. However, if the val-
ue is on the borderline of the standard value, the O2S may mal-
function very soon.
HOW TO READ O2S TEST RESULT USING HAND±HELD
TESTER
(a) Connect the hand±held tester to the DLC3.
(b) On the tester screen, select the following menus: DIAG-
NOSIS / CARB OBDII / O2S TEST RESULT. A list of the
O2S equipped on the vehicle will be displayed.

LOW SW V . . . . . . 0.400 V
HIGH SW V . . . . . .0.550 V
MIN O2S V . . . . . . 0.035 V
MAX O2S V . . . . . 0.835 V
Time $81 . . . . . . . . . . . 17
Time $84 . . . . . . . . . . . 84
Time $85 . . . . . . . . . . . 79
A21191
TEST DATA Screen
± DIAGNOSTICSENGINE
DI±25
219 Author: Date:
2005 SEQUOIA (RM1146U)
(c) Select the desired O2S and press ENTER. The following
screen will appear.
(d) Press HELP and
simultaneously. More information will
appear.
(e) Example:
(1) The hand±held tester displays º17º as a value of the
ºTIME $81º (see the illustration on the left).
(2) Find the Conversion Factor value of ºTIME $81º in
the O2S TEST RESULT chart below. 0.3906 is spe-
cified for $81 in this chart.
(3) Multiply º17º in step (1) by 0.3906 (Conversion Fac-
tor) in the step (2).
17 x 0.3906 = 6.6 %
(4) If the answer is within the standard value, the ºTIME
$81º can be confirmed to be normal.
O2S TEST RESULT Chart
TEST IDDescription of TEST DATAConversion FactorUnitStandard Value
$81
Percentage of monitoring time
when the HO2S voltage is less
than 0.05V
Multiply 0.3906%Within 60 %