2001 TOYOTA SEQUOIA turn signal

IN±26± INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
26 Author: Date:
2005 SEQUOIA (RM1146U)
2. SYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE CHECK
The diagnostic system in the SEQUOIA fulfills various functions. The first function is the Diagnostic Trouble
Code Check in which a malfunction in the signal circuits to the ECU is stored in code in the ECU memory
at the time of occurrence, to be output by the technician during troubleshooting. Another function is the Input
Signal Check which checks if the signals from various switches are sent to the ECU correctly.
By using these check functions, the problem areas can be narrowed down quickly and troubleshooting can
be performed effectively. Diagnostic functions are incorporated in the following systems in the SEQUOIA.
SystemDiagnostic Trouble
Code CheckInput Signal Check
(Sensor Check)Diagnostic Test
Mode (Active Test)
1. Engine(with Check
Mode)
2. Automatic Transmission(with Check
Mode)
3. Air Suspension Control System(with Check
Mode)
4. Tire Pressure Warning System
5. ABS with EBD & BA & TRAC & VSC System
6. Can Communication System
7. Supplemental Restraint System(with Check
Mode)
8. Power Seat Control System w/ Driving Position Memory
9. Cruise Control System
10.Engine Immobilizer System
11. Combination Meter System
12.Sliding Roof System
13.Body Control System
14.Driver Door Control System
15.Passenger Door Control System
16.Back Door Control System
17.Multiplex Communication System
18.Audio System
19.Rear Seat Audio System
20.Rear Seat Entertainment System
21.Air Conditioning System
In diagnostic trouble code check, it is very important to determine whether the problem indicated by the diag-
nostic trouble code is still occurring or occurred in the past but returned to normal at present. In addition,
it must be checked in the problem symptom check whether the malfunction indicated by the diagnostic
trouble code is directly related to the problem symptom or not. For this reason, the diagnostic trouble codes
should be checked before and after the symptom confirmation to determine the current conditions, as shown
in the table on the next page. If this is not done, it may, depending on the case, result in unnecessary trouble-
shooting for normally operating systems, thus making it more difficult to locate the problem, or in repairs not
pertinent to the problem. Therefore, always follow the procedure in correct order and perform the diagnostic
trouble code check.

MA002±35
MA±2
± MAINTENANCEINSIDE VEHICLE
49 Author: Date:
2005 SEQUOIA (RM1146U)
INSIDE VEHICLE
GENERAL MAINTENANCE
These are maintenance and inspection items which are considered to be the owner's responsibility.
They can be done by the owner or they can have them done at a service shop.
These items include those which should be checked on a daily basis, those which, in most cases, do not
require (special) tools and those which are considered to be reasonable for the owner to do.
Items and procedures for general maintenance are as follows.
1. GENERAL NOTES

Maintenance items may vary from country to country. Check the owner's manual supplement in which
the maintenance schedule is shown.

Every service item in the periodic maintenance schedule must be performed.

Periodic maintenance service must be performed according to whichever interval in the periodic main-
tenance schedule occurs first, the odometer reading (miles) or the time interval (months).

Maintenance service after the last period should be performed at the same interval as before unless
otherwise noted.

Failure to do even one item can cause the engine to run poorly and increase exhaust emissions.
2. LIGHTS
(a) Check that the headlights, stop lights, taillights, turn signal lights, and other lights are all working.
(b) Check the headlight aim.
3. WARNING LIGHTS AND BUZZERS
Check that all warning lights and buzzers function properly.
4. HORN
Check that it is working.
5. WINDSHIELD GLASS
Check for scratches, pits or abrasions.
6. WINDSHIELD WIPER AND WASHER
(a) Check operation of the wipers and washer.
(b) Check that the wipers do not streak.
7. WINDSHIELD DEFROSTER
Check that air comes out from the defroster outlet when operating the heater or air conditioner.
8. REAR VIEW MIRROR
Check that it is mounted securely.
9. SUN VISORS
Check that they move freely and are mounted securely.
10. STEERING WHEEL
Check that it has the specified free play. Be alert for changes in steering condition, such as hard steering,
excessive free play or strange noises.
11. SEATS
(a) Check that the seat adjusters operate smoothly.
(b) Check that all latches lock securely in any position.
(c) Check that the head restraints move up and down smoothly and that the locks hold securely in any
latch position.
(d) For fold±down seat backs, check that the latches lock securely.
12. SEAT BELTS
(a) Check that the seat belt system such as the buckles, retractors and anchors operate properly and
smoothly.
(b) Check that the belt webbing is not cut, frayed, worn or damaged.

SS08X±05
± SERVICE SPECIFICATIONSSTEERING
SS±45
187 Author: Date:
2005 SEQUOIA (RM1146U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
TILT STEERING COLUMN
Steering wheel pad set screw (Torx screw)8.89078 in.´lbf
Steering wheel set nut5051037
Control valve shaft x No. 2 intermediate shaft assembly3536026
No. 2 intermediate shaft assembly x Sliding yoke3536026
No. 2 universal joint assembly x Sliding yoke3536026
No. 2 universal joint assembly x Main shaft assembly3536026
Steering column assembly set nut2626019
Column hole cover No. 2 set bolt8.08271 in.´lbf
Shift lever set bolt1818013
Shift lever housing x Column tube assembly121209
Turn signal bracket x Steering column housing7.57565 in.´lbf
Tilt lever lock shaft9.09078 in.´lbf
PS VANE PUMP
Union bolt x Pressure feed tube46.547534
PS vane pump assembly set stud bolt2222016
PS vane pump assembly set bolt and nut4445033
Suction port union set bolt131309
Pressure port union8385061
Front housing x Rear housing2424017
PS GEAR
Turn pressure tube union nut13 (15)135 (150)10 (11)
Tie rod end lock nut5556041
Rack x Rack end76 (103)770 (1,050)56 (76)
Rack guide spring cap lock nut44 (59)450 (600)32 (43)
Rack housing cap5960043
Self±locking nut2525018
Control valve housing set bolt1818513
PS gear assembly set bolt1651,700123
PS gear assembly set bolt and nut1301,35096
Bracket x Body Bolt and nut1651,700123
Bracket x Body Stud bolt2020015
Pressure feed and return tubes x Control valve housing22 (25)227 (250)16 (18)
No. 2 intermediate shaft assembly x No. 2 universal joint assembly3536026
Control valve shaft x No. 2 intermediate shaft assembly3536026
Tie rod end x Lower arm9193067
( ): For use without SST

A04550
12 345678
11 12 13 14 15 16 910
DLC3
± DIAGNOSTICSENGINE
DI±41
235 Author: Date:
2005 SEQUOIA (RM1146U)

Freeze frame data:
The freeze frame data records the engine conditions (fuel
system, calculated load, engine coolant temperature, fuel
trim, engine speed, vehicle speed, etc.) when a malfunc-
tion 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.
Priorities for troubleshooting:
When multiple DTCs occur, find out the order in which the DTCs
should be inspected by checking the component's DTC chart.
If no instructions are written in the DTC chart, check DTCs in the
following order of priority:
(a) DTCs other than fuel trim malfunction DTCs (P0171,
P0172, P0174 and P0175) and misfire DTCs (P0300 to
P0308).
(b) Fuel trim malfunction DTCs (P0171, P0172, P0174 and
P0175).
(c) Misfire DTCs (P0300 to P0308).
4. CHECK DLC3
The vehicle's ECM uses the ISO 9141±2 for communica-
tion protocol. The terminal arrangement of the DLC3 com-
plies with SAE J1962 and matches the ISO 9141±2 for-
mat.
SymbolTerminal DescriptionConditionSpecified Condition
SIL (7) ± SG (5)Bus º+º lineDuring transmissionPulse generation
CG (4) ± Body groundChassis groundAlwaysBelow 1 W
SG (5) ± Body groundSignal groundAlwaysBelow 1 W
BAT (16) ± Body groundBattery positiveAlways11 to 14 V
CANH (6) ± CANL (14)HIGH±level CAN bus lineIgnition switch OFF54 to 69 W
CANH (6) ± Battery positiveHIGH±level CAN bus lineIgnition switch OFF1 MW or higher
CANH (6) ± CG (4)HIGH±level CAN bus lineIgnition switch OFF1 kW or higher
CANL (14) ± Battery positiveLOW±level CAN bus lineIgnition switch OFF1 MW or higher
CANL (6) ± CG (4)LOW±level CAN bus lineIgnition switch OFF1 kW or higher
HINT:
Connect the cable of the hand±held tester to the DLC3, turn the
ignition switch ON and attempt to use the hand±held tester. If
the screen displays UNABLE TO CONNECT TO VEHICLE, a
problem exists in the vehicle side or the tester side.

If the communication is normal when the tool is connected
to another vehicle, inspect the DLC3 on the original ve-
hicle.

± DIAGNOSTICSENGINE
DI±47
241 Author: Date:
2005 SEQUOIA (RM1146U)P2120
P2121
P2122
P2123
P2125
P2127
P2128
P2138
The accelerator pedal position sensor has two (main and
sub) sensor circuits. If a malfunction occurs in either of the
sensor circuits, the ECM detects the abnormal signal volt-
age difference between the two sensor circuits and
switches to limp mode. In limp mode, the remaining circuit
is used to calculate the accelerator pedal opening to allow
the vehicle to continue driving.
If both circuits malfunction, the ECM regards the opening
angle of the accelerator pedal to be fully closed. In this
case, the throttle valve will remain closed as if the engine is
idling.
ºPassº condition is detected and the ignition switch is turned
OFF.
P2440 and
P1441 and/or
P1444
Restrict the throttle opening angle: Ga
30 g/s
P1441 and P1444Restrict the throttle opening angle: Ga
50 g/s
P1441
P1444Restrict the throttle opening angle: Ga
100 g/s
P2430
P2431
P2432
P2433
Restrict the throttle opening angle: Ga
50 g/s

DI±52
± DIAGNOSTICSENGINE
246 Author: Date:
2005 SEQUOIA (RM1146U)FUEL SYS #2
Fuel system status (Bank1):
OL or CL or OL DRIVE or
OL FAULT or CL FAULT
CL: Idling after warming up

OL (Open Loop): Has not yet sa-
tisfied conditions to go closed
loop

CL (Closed Loop): Using heated
oxygen sensor as feedback for
fuel control.

OL DRIVE: Open loop due to
driving conditions (fuel enrich-
ment)

OL FAULT: Open loop due to de-
tected system fault

CL FAULT: Closed loop but
heated oxygen sensor, which
used for fuel control malfunction-
ing
O2FT B1 S2
Short±term fuel trim associated
with the bank 1 sensor 2:
Min.: ±100 %, Max.: 99.2 %
0 ± 20 %Same as SHORT FT #1
O2FT B2 S2
Short±term fuel trim associated
with the bank 1 sensor 2:
Min.: ±100 %, Max.: 99.2 %
0 ± 20 %Same as SHORT FT #1
AF FT B1 S1
Short±term fuel trim associated
with the bank 1 sensor 1:
Min.: 0, Max.: 1.999

Value less than 1 (0.000 to
0.999) = Lean

Stoichiometric air±fuel ratio=1

Value greater than 1 (1.001 to
1.999) = RICH
'
AF FT B2 S1
Short±term fuel trim associated
with the bank 1 sensor 1:
Min.: 0, Max.: 1.999

Value less than 1 (0.000 to
0.999) = Lean

Stoichiometric air±fuel ratio=1

Value greater than 1 (1.001 to
1.999) = RICH
'
CAT TEMP B1S1
Catalyst temperature (Bank 1,
Sensor 1):
Min.: ±40, Max.: 6,513.5 C
''
CAT TEMP B2S1
Catalyst temperature (Bank 1,
Sensor 1):
Min.: ±40, Max.: 6,513.5 C
''
CAT TEMP B1S2
Catalyst temperature (Bank 1,
Sensor 2):
Min.: ±40, Max.: 6,513.5 C
''
CAT TEMP B2S2
Catalyst temperature (Bank 1,
Sensor 2):
Min.: ±40, Max.: 6,513.5 C
''
INI COOL TEMPInitial engine coolant temperature:
Min.: ±40C, Max.: 140CClose to ambient air temperatureService data
INI INTAKE TEMPInitial intake air temperature:
Min.: ±40C, Max.: 140CClose to ambient air temperatureService data
INJ VOLInjection volume (cylinder 1):
Min.: 0 ml, Max.: 2.048 ml0 to 0.5 mlQuantity of fuel injection volume
for 10 times
STARTER SIGStarter signal: ON or OFFON: Cranking'
PS SWPower steering signal:
ON or OFFON: Power steering operation'
PS SIGNALPower steering signal:
ON or OFFON: When steering wheel first
turned after ignition switch turned
to ONThis signal status usually ON until
ignition switch turned to OFF
CTP SWClosed throttle position switch:
ON or OFF
ON: Throttle fully closed

OFF: Throttle open'

± 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

DI±56
± DIAGNOSTICSENGINE
250 Author: Date:
2005 SEQUOIA (RM1146U) VVT CTRL B1
Turn on and off OCV
(Oil Control Valve)ON/OFF

Engine stalls or idles roughly
when OCV turned ON

Normal engine running or idling
when OCV off
VVT CTRL B2Turn on and off OCV
(Oil Control Valve)ON/OFF

Engine stalls or idles roughly
when OCV turned ON

Normal engine running or idling
when OCV off
A/C CUT SIGControl A/C cut signalON/OFF±
FUEL PUMP/SPDActivate fuel pump (C/OPN Relay)ON/OFF±
TC/TE1Turn on and off TC and TE1 con-
nectionON/OFF
ON: TC and TE1 connected

OFF: TC and TE1 disconnected
FC IDL PROHBTProhibit idling fuel cut controlON/OFF±
ETCS OPEN SLOWThrottle actuatorON: throttle valve opens slowly
This test is possible when the fol-
lowing conditions are met:

Ignition switch ON

Engine does not start

Fully depressing accelerator ped-
al (APP: 58 degrees or more)
ETCS CLOSE SLOWThrottle actuatorON: throttle valve closes slowlySame as above
ETCS OPEN FASTThrottle actuatorON: throttle valve opens fastSame as above
ETCS CLOSE FASTThrottle actuatorON: throttle valve closes fastSame as above
FUEL CUT #1Cylinder #1 injector fuel cutON/OFFThis test is possible during vehicle
stopping and engine idling.
FUEL CUT #2Cylinder #2 injector fuel cutON/OFFSame as above
FUEL CUT #3Cylinder #3 injector fuel cutON/OFFSame as above
FUEL CUT #4Cylinder #4 injector fuel cutON/OFFSame as above
FUEL CUT #5Cylinder #5 injector fuel cutON/OFFSame as above
FUEL CUT #6Cylinder #6 injector fuel cutON/OFFSame as above
FUEL CUT #7Cylinder #7 injector fuel cutON/OFFSame as above
FUEL CUT #8Cylinder #8 injector fuel cutON/OFFSame as above
VENT VALVE (ALONE)Activate vent valve
(built into pump module)ON/OFF±
VCUUM PUMPActivate vacuum pump
(built into pump module)ON/OFF±