engine starting TOYOTA SEQUOIA 2001 Service Owner's Manual

± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±657
851 Author: Date:
2005 SEQUOIA (RM1146U)
MONITOR STRATEGY
Related DTCsP2714Shift solenoid valve SLT/ON malfunction
MainShift solenoid valve SLT
Required sensors/ComponentsSubValve body, ATF temperature sensor, Speed sensor (NT), Speed sensor
(NO)
Frequency of operationContinuous
DurationImmediate
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
All:
Turbine speed sensor circuitNot circuit malfunction
Output speed sensor circuitNot circuit malfunction
Transmission Fluid Temperature Sensor
circuitNot circuit malfunction
Shift solenoid valve S1 circuitNot circuit malfunction
Shift solenoid valve S2 circuitNot circuit malfunction
Shift solenoid valve SR circuitNot circuit malfunction
Shift solenoid valve SL1 circuitNot circuit malfunction
Shift solenoid valve SL2 circuitNot circuit malfunction
Shift solenoid valve SLT circuitNot circuit malfunction
ECT (Engine coolant temperature) sensor
circuitNot circuit malfunction
KCS sensor circuitNot circuit malfunction
ETCS (Electric throttle control system)Not system down
Transmission rangeºDº
ECT40°C (104°F) or more±
Spark advance from Max. retard timing by
KCS control0° CA or more±
EngineStarting
Transfer rangeºHIGHº*1
TFT (transmission fluid temperature)10°C or more±
Transfer range ºHIGHº *1 (This condition is applied only 4WD)
*1 Following conditions met
Vehicle speed sensor circuitNot circuit malfunction
Output shaft speed sensor circuitNot circuit malfunction
Transfer output speed143 rpm or more±
NO/NOtf (Transfer input speed/Transfer
output speed)0.9 to 1.1

DI±674
± DIAGNOSTICSAUTOMATIC TRANSMISSION
868 Author: Date:
2005 SEQUOIA (RM1146U) ECT (Engine coolant temperature)
40°C (104°F) or more±
Spark advance from Max. retard timing by
KCS control0° CA or more±
EngineStarting
ECM selected gear4th or 5th
Vehicle speed25 km/h (15.5 mph) or more±
Shift solenoid valve S1 circuitNot on malfunction
Shift solenoid valve S2 circuitNot on malfunction
Shift solenoid valve SL2 circuitNot on malfunction
1±2 Shift valveNot on malfunction
Transfer neutral position switchOFF
Transfer rangeºHIGHº*1
Transfer range ºHIGHº *1 (This condition is applied only 4WD)
*1 Following conditions met
Vehicle speed sensor circuitNot circuit malfunction
Output shaft speed sensor circuitNot circuit malfunction
Transfer output speed143 rpm or more±
NO/NOtf (Transfer input speed/Transfer
output speed)0.9 to 1.1
OFF malfunction (A)
ECM lock±up commandON
(SLU pressure: 513kpa or more)
Vehicle speed±Less than 100 km/h (62.2 mph)
OFF malfunction (B)
ECM selected gear2nd
Vehicle speed2 km/h (1.2 mph) or more±
Output speed2nd " 1st down shift point or more±
Throttle valve opening angle7.0% or more at 2,000 rpm
(Conditions vary with engine speed)±
ON malfunction
ECM lock±up commandOFF
(SLU pressure: less than 4kpa)
Throttle valve opening angle9% or more±
Vehicle speed±Less than 60 km/h (37.3 mph)

DIDLX±01
DI±894
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1088 Author: Date:
2005 SEQUOIA (RM1146U)
SYSTEM DESCRIPTION
1. SYSTEM DESCRIPTION
HINT:

The yaw rate sensor and deceleration sensor are combined and in a single unit. This unit communi-
cates with the skid control ECU through the CAN communication system.

No changes have been made to the communication method between the VSC system and ECM. How-
ever, the communication method between the Translate ECU and ECM has been changed from serial
to CAN communication.
(a) ABS
(Anti±lock Brake System)
The ABS helps prevent the wheels from locking when the brakes are applied firmly or when braking
on a slippery surface.
(b) EBD
(Electronic Brake force Distribution)
The EBD control utilizes ABS, realizing proper brake force distribution between front and rear wheels
in accordance with driving conditions.
In addition, during braking while cornering, it also controls the brake forces of the right and left wheels,
helping to maintain vehicle behavior.
(c) BA (Brake Assist)
The primary purpose of the brake assist system is to provide an auxiliary brake force to assist the driver
who cannot generate a large enough brake force during emergency braking, thus helping to maximize
the vehicle's braking performance.
(d) TRAC
(Traction Control)
The TRAC system helps prevent the drive wheels from slipping if the driver presses down on the accel-
erator pedal excessively when starting off or accelerating on a slippery surface.
(e) VSC
(Vehicle Stability Control)
The VSC system helps prevent the vehicle from slipping sideways as a result of strong front wheel skid
or strong rear wheel skid during cornering.
2. ABS with EBD & BA & TRAC & VSC OPERATION
(a) The skid control ECU calculates vehicle stability tendency based on signals from the speed sensor,
yaw rate (deceleration) sensor and steering angle sensor. In addition, it evaluates the results of the
calculations to determine whether any control actions (control of the engine output torque by electronic
throttle control and of the wheel brake pressure by the brake actuator) should be implemented.
(b) The SLIP indicator blinks and the VSC buzzer sounds to inform the driver that the VSC system is oper-
ating. The SLIP indicator also blinks when TRAC is operating, and the operation being performed is
displayed.
3. FAIL SAFE FUNCTION
(a) When a failure occurs in the ABS & BA & TRAC & VSC systems, the ABS and VSC warning lights come
on and ABS & BA & TRAC & VSC operations are prohibited. In addition to this, when there is a failure
that disables EBD operation, the brake warning light also comes on and EBD operation is prohibited.
(b) If some control is prohibited due to a malfunction during its operation, that control will be cut off gradual-
ly not to change the stability of the vehicle suddenly.

DI1AJ±49
Vehicle Brought to Workshop
Customer Problem Analysis
Check and Clear DTCItems inside
are titles of pages in this manual,
with the page number in the bottom portion. See
the pages for detailed explanations.
Problem Symptom ConfirmationSymptom Simulation Symptom
does not occur
Symptom
occurs
DTC Check
Circuit Inspection and Part Inspection
DTC ChartProblem Symptoms Table
Identification of Problem
Repair
Confirmation Test
End
1
2
3
4
6
77
8
9
10
P. DI±1572
P. DI±1576
P. IN±24
P. DI±1573 P. DI±1576
P. DI±1578
P. DI±1580 ± DI±1599
Multiplex Communication System Inspection * 5
P. DI±1904
*: Confirm that there is no trouble by DTC check.
Normal system code
Trouble code
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±1571
1765 Author: Date:
2005 SEQUOIA (RM1146U)
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
The ECU of this system is connected to the multiplex communication system. Therefore, before starting trou-
bleshooting, make sure to check that there is no trouble in the multiplex communication system.
Troubleshoot in accordance with the following procedures:

± DIAGNOSTICSAUDIO SYSTEM
DI±1987
2181 Author: Date:
2005 SEQUOIA (RM1146U)E0
*1
Registration Completion
Instruction ErrorºRegistration Completion Instructionº command
from master cannot be received.Since this DTC is provided for engi-
neering, it may be detected when no
actual failure exists.
±
E3
*1Registration Request Transmis-
sion

Registration Request command is output from
slave component.

Registration Request command is output from
sub±master component.Since this DTC is provided for engi-
neering, it may be detected when no
actual failure exists.
±
DF
*4Master Error
Due to defective condition of component with a
display, master function is switched to audio
equipment.
Error occurs in communication between sub±
master (audio) and master component.
1. Power source circuit (Radio re-
ceiver assy).
2. AVC±LAN (Radio receiver assy
± Multi±display controller sub±
assy).
3. Replace Multi±display controller
sub±assy.DI±1990
DI±2139
±
E4
*1Multiple Frame AbortMultiple frame transmission is aborted.
Since this DTC is provided for engi-
neering purpose, it may be detected
when no actual failure exists.
±
HINT:

*1: Even if no failure is detected, this code may be stored depending on the battery condition or voltage
for starting an engine.

*2: This code is stored when 180 sec. has passed after the power supply connector is pulled out after
engine start.

*3: This code may be stored when the engine key is turned back to the ON position and then turned
again to the START position in 1 minute after engine start.

*4: This code may be stored when the engine key is turned back to the ON position and then turned
again to the START position after engine start.
Rear seat audio controller (Physical address: 1F4) [RSA]
(a) Logical address: 01 (Communication control)
DTCNameDiagnosisVerificationSee page
D6
*1Absence of Master
Component in which this code is recorded has
been disconnected from system with ignition in
ACC or ON. Or, when this code was recorded,
RSA panel was disconnected.
1. Power source circuit (Radio re-
ceiver assy).
2. AVC±LAN (Radio receiver assy
± Rear seat audio controller).
3. Replace Rear seat audio control-
ler.DI±1990
DI±2061
±
D7
*2Connection Check Error
Component in which this code is recorded has
been disconnected from system after engine start.
Or, when this code was recorded, RSA panel was
disconnected.
1. Power source circuit (Radio re-
ceiver assy).
2. AVC±LAN (Radio receiver assy
± Rear seat audio controller).
3. Replace Rear seat audio control-
ler.DI±1990
DI±2061
±
DC
*3Transmission Error
Transmission to component shown by sub±code
has been failed.
(This code does not necessarily mean actual fail-
ure.)If same sub±code is recorded in
other component(s), check harness
for power supply and communica-
tion system of all components
shown by code.
±
DD
*4Master Reset (Momentary Inter-
ruption)Component that is to be master has been discon-
nected after engine start.
1. Power source circuit (Radio re-
ceiver assy).
2. AVC±LAN (Radio receiver assy
± Rear seat audio controller).
3. Replace Rear seat audio control-
ler.DI±1990
DI±2061
±

DI±1988
± DIAGNOSTICSAUDIO SYSTEM
2182 Author: Date:
2005 SEQUOIA (RM1146U)E0
*1
Registration Completion
Instruction ErrorºRegistration Completion Instructionº command
from master cannot be received.Since this DTC is provided for engi-
neering, it may be detected when no
actual failure exists.
±
E3
*1Registration Request Transmis-
sion

Registration Request command is output from
slave component.

Registration Request command is output from
sub±master component.Since this DTC is provided for engi-
neering, it may be detected when no
actual failure exists.
±
DF
*4Master Error
Due to defective condition of component with a
display, master function is switched to audio
equipment.
Error occurs in communication between sub±
master (audio) and master component.1. Power source circuit (Radio re-
ceiver assy).
2. AVC±LAN (Radio receiver assy
± Rear seat audio controller).
3. Replace Rear seat audio control-
ler.DI±1990
DI±2061
±
E4
*1Multiple Frame AbortMultiple frame transmission is aborted.
Since this DTC is provided for engi-
neering purpose, it may be detected
when no actual failure exists.
±
D8
*2No Response To Connection
CheckComponent shown by sub±code is or had been
disconnected from system after engine start.
1. Power source circuit (Radio re-
ceiver assy).
2. AVC±LAN (Radio receiver assy
± Rear seat audio controller).
3. Replace Rear seat audio control-
ler.DI±1990
DI±2061
±
D9
*1Last Mode Error
Component operated (sound and/or image was
provided) before engine stop is or was discon-
nected with ignition switch in ACC or ON.
1. Power source circuit (Radio re-
ceiver assy).
2. AVC±LAN (Radio receiver assy
± Rear seat audio controller).
3. Replace Rear seat audio control-
ler.DI±1990
DI±2061
±
DANo Response to ON/OFF
Instruction
No response is identified when changing mode
(audio and visual mode change).
Detected when sound and picture does not
change by button operation
1. Power source circuit (Radio re-
ceiver assy).
2. AVC±LAN (Radio receiver assy
± Rear seat audio controller).
3. Replace Rear seat audio control-
ler.DI±1990
DI±2061
±
DB
*1Mode Status ErrorDual alarm is detected.
1. Power source circuit (Radio re-
ceiver assy).
2. AVC±LAN (Radio receiver assy
± Rear seat audio controller).
3. Replace Rear seat audio control-
ler.DI±1990
DI±2061
±
DC
*4Transmission Error
Transmission to component shown by sub±code
has been failed.
(This code does not necessarily mean actual fail-
ure.)If same sub±code is recorded in
other component(s), check harness
for power supply and communica-
tion system of all components
shown by code.
±
DE
*3Slave Reset (Momentary Inter-
ruption)After engine start, slave component has been dis-
connected.
1. Power source circuit (Radio re-
ceiver assy).
2. AVC±LAN (Radio receiver assy
± Rear seat audio controller).
3. Replace Rear seat audio control-
ler.DI±1990
DI±2061
±
HINT:

*1: Even if no failure is detected, this code may be stored depending on the battery condition or voltage
for starting the engine.

DIDB3±01
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2103
2297 Author: Date:
2005 SEQUOIA (RM1146U)
DIAGNOSTIC TROUBLE CODE CHART
TermsMeaning
Physical addressThree±digit code (shown in hexadecimal) which is given to each component com-
prising the AVC±LAN.
Corresponding to the function, individual symbols are specified.
Logical addressTwo±digit code (shown in hexadecimal) which is given to each function comprising
the inner system of the AVC±LAN.
HINT:
DTC of the device which is directly connected via AVC±LAN, is displayed on the ºaudio system or navigation
systemº and the ºtelevision display assyº respectively.
Titles for each unit are stated in the following order: parts name (physical address) [Name indicated by DTC]
1. MULTI±DISPLAY CONTROLLER SUB±ASSY (Physical address: 16C, 16D) [RSE±ECU]
HINT:

*1: Even if no failure is detected, this code may be stored depending on the battery condition or voltage
for starting the engine.

*2: This code is stored 180 seconds after the power supply connector is disconnected after engine
start.

*3: This code may be stored when the engine key is turned back to the ON position and then turned
again to the START position after engine start.

*4: This code may be stored when the engine key is turned back to the ON position and then turned
again to the START position in 1 minute after engine start.
(a) Logical address: 01 (Communication control)
DTCNameDiagnosisVerificationSee page
D8
*2No Response To Connection
CheckComponent shown by sub±code is or had been
disconnected from system after engine start.
1. Power source circuit (Television
display assy).
2. Power source circuit (Disc play-
er controller).
3. AVC±LAN circuit.
4. Replace television display assy.
5. Replace disc player controller.DI±2107
DI±2112
DI±2139
±
±
D9
*1Last Mode Error
Component operated (sound and/or image was
provided) before engine stop is or was discon-
nected with ignition switch in the ACC or ON posi-
tion.
1. Power source circuit (Television
display assy).
2. Power source circuit (Disc play-
er controller).
3. AVC±LAN circuit
4. Replace television display assy.
5. Replace disc player controller.DI±2107
DI±2112
DI±2139
±
±
DANo Response to ON/OFF
Instruction
No response is identified when changing mode
(audio and visual mode change).
Detected when sound and picture do not change
by button operation.
1. Power source circuit (Television
display assy).
2. Power source circuit (Disc play-
er controller).
3. AVC±LAN circuit
4. Replace television display assy.
5. Replace disc player controller.DI±2107
DI±2112
DI±2139
±
±
DB
*1Mode Status ErrorDual alarm is detected.
1. Power source circuit (Television
display assy).
2. Power source circuit (Disc play-
er controller).
3. AVC±LAN circuit
4. Replace television display assy.
5. Replace disc player controller.DI±2107
DI±2112
DI±2139
±
±

DI±2104
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2298 Author: Date:
2005 SEQUOIA (RM1146U)DC
*4
Transmission Error
Transmission to component shown by sub±code
failed.
(This code does not necessarily mean actual fail-
ure.)If same sub±code is recorded in
other component(s), check harness
for power supply and communica-
tion system of all components
shown by code.
±
DE
*3Slave Reset (Momentary Inter-
ruption)After engine start, slave component has been dis-
connected.
1. Power source circuit (Television
display assy).
2. Power source circuit (Disc play-
er controller).
3. AVC±LAN circuit
4. Replace television display assy.
5. Replace disc player controller.DI±2107
DI±2112
DI±2139
±
±
E4
*1Multiple Frame AbortMultiple frame transmission is aborted.
Since this DTC is provided for engi-
neering purpose, it may be detected
when no actual failure exists.
±
2. Television display assy (Physical address: 1B0) [Rr±TV]
HINT:

*1: Even if no failure is detected, this code may be stored depending on the battery condition or voltage
for starting the engine.

*2: This code may be stored when the engine key is turned again in 1 minute after the engine start.

*3: This code may be stored when the engine key is turned again after the engine start.

*4: The code is stored 210 seconds after the power supply connector of the master component is dis-
connected with the ignition switch in the ACC or ON position.
(a) Logical address: 01 (Communication control)
DTCNameDiagnosisVerificationSee page
22RAM ErrorAbnormal condition of RAM is detected.Replace television display assy±
D6
*1Absence of Master
Component in which this code is recorded was
disconnected from system with the ignition switch
in the ACC or ON position. Or, when this code
was recorded, multi±display controller sub±assy
was disconnected.
1. Power source circuit (Television
display assy).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN circuit.
4. Replace television display assy.
5. Replace Multi±display controller
sub±assy.DI±2107
DI±2110
DI±2139
±
±
D7
*4Communication Check Error
Component in which this code is recorded is or
was disconnected from system after engine start.
Or, when recording this code, multi±display con-
troller sub±assy was disconnected.
1. Power source circuit (Television
display assy).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN circuit.
4. Replace television display assy.
5. Replace Multi±display controller
sub±assy.DI±2107
DI±2110
DI±2139
±
±
DC
*2Transmission Error
Transmission to component shown by sub±code
failed.
(Detecting this DTC does not necessarily mean
actual failure.)If the same sub±code is recorded in
other components, check harness
for power supply and communica-
tion system of all components
shown by code.
±

± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2105
2299 Author: Date:
2005 SEQUOIA (RM1146U)DD
*3
Master Reset (Momentary Inter-
ruption)After engine start, multi±display controller sub±
assy was disconnected from system.
1. Power source circuit (Television
display assy).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN circuit.
4. Replace television display assy.
5. Replace Multi±display controller
sub±assy.DI±2107
DI±2110
DI±2139
±
±
DF
*4Master Error
Due to defective condition of component with a
display, master function is switched to audio
equipment.
Error occurs in communication between sub±
master (audio) and master component.
1. Power source circuit (Television
display assy).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN circuit.
4. Replace television display assy.
5. Replace Multi±display controller
sub±assy.DI±2107
DI±2110
DI±2139
±
±
E0
*1Registration Completion
Instruction ErrorºRegistration Completion Instructionº command
from master cannot be received.Since this DTC is provided for engi-
neering purposes, it may be de-
tected when no actual failure exists.
±
E2ON/OFF Instruction Parameter
ErrorError occurs in ON/OFF controlling command
from multi±display controller sub±assy.Replace multi±display controller
sub±assy.±
E3
*1Registration Request Transmis-
sion

Registration Request command is output from
slave component.

Registration Connection Check Instruction, Reg-
istration Request command is output from sub±
master component.
Since this DTC is provided for engi-
neering purposes, it may be de-
tected when no actual failure exists.
±
E4
*1Multiple Frame AbortMultiple frame transmission is aborted.
Since this DTC is provided for engi-
neering purposes, it may be de-
tected when no actual failure exists.
±
3. Disc player controller (Physical address: 1A0) [DVD±P]
HINT:

*1: Even if no failure is detected, this code may be stored depending on the battery condition or voltage
for starting an engine.

*2: This code may be stored when the engine key is turned again 1 min. after the engine starts.

*3: This code may be stored when the engine key is turned again after the engine starts.

*4: When 210 sec. have passed after pulling out the power supply connector of the master component
with the ignition switch in ACC or ON, this code is stored.
(a) Logical address: 01 (Communication control)
DTCNameDiagnosisVerificationSee page
22RAM ErrorAbnormal condition of RAM is detected.Replace disc player controller±
D6
*1Absence of Master
Component in which this code is recorded was
disconnected from system with the ignition switch
in the ACC or ON position. Or, when this code
was recorded, multi±display controller sub±assy
was disconnected.
1. Power source circuit (Disc play-
er controller).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN circuit.
4. Replace disc player controller.
5. Replace Multi±display controller
sub±assy.DI±2112
DI±2110
DI±2139
±
±

DIDC5±01
I28205
I28206
Upper Left
Lower Left
I28207
± DIAGNOSTICSNAVIGATION SYSTEM
DI±2191
2385 Author: Date:
2005 SEQUOIA (RM1146U)
DIAGNOSIS SYSTEM
HINT:

Illustrations may differ from the actual vehicle depending on the device settings and options. There-
fore, some detailed areas may not be shown exactly the same as on the actual vehicle.

After the ignition switch is turned on, check that the map is displayed before starting the diagnostic
mode. Otherwise, some items cannot be checked.
1. There are 2 methods to start diagnostic mode. Start the mode by using one of them.
2. Method 1
(a) Start the engine.
(b) While pressing and holding ºINFOº switch, operate the
light control switch, OFF " TAIL " OFF " TAIL " OFF
" TAIL " OFF.
(c) The diagnostic mode starts and the service check screen
(ºSystem Check Modeº) will be displayed. Service inspec-
tion starts automatically and the result will be displayed.
3. Method 2
(a) Start the engine.
(b) Switch to the ºDisplay quality adjustmentº screen.
(c) From the display quality adjustment screen, touch the
corners of the screen in the following order: upper left "
lower left "upper left " lower left " upper left " lower
left.
(d) The diagnostic mode starts and ºService Checkº screen
will be displayed. Service inspection starts automatically
and the result will be displayed.
4. Diagnosis MENU
(a) Diagnostic screen will be displayed by pressing the menu
switch on the service check screen.