Toyota Sequoia (2005). Manual — part 6
IN0KL–01
–
INTRODUCTION
FOR ALL OF VEHICLES
IN–21
21
CUSTOMIZE PARAMETERS
HINT:
The following items can be customized.
NOTICE:
When a customer requests a change in a function, first make sure that customization of the
function(s) is/are possible.
Be sure to make a note of the current setting before customizing.
When troubleshooting a function, first make sure that the function is not set to OFF.
When troubleshooting, pay attention as there is a possibility that the function has been set to
SMALL through customizing (Example: In case of the symptom in which ”The key reminder
buzzer operation does not function” is displayed, check that the key reminder buzzer operation
is not set to SMALL, then perform troubleshooting).
METER:
DISPLAY (ITEM)
DEFAULT
CONTENTS
SETTING
KEY REMND VOLUM
(Key reminder buzzer vol-
ume)
LARGE
Function that changes the volume of key reminder buzzer.
LARGE/MEDIUM/SMALL
WIRELESS DOOR LOCK:
DISPLAY (ITEM)
DEFAULT
CONTENTS
SETTING
WIRELESS OPER
ON
Turns wireless door lock function ON/OFF.
ON/OFF
OPEN DOOR WARN
ON
Sounds buzzer for 10 seconds when door is not completely
closed and transmitter LOCK switch is pressed.
ON/OFF
AUTO LOCK DELAY
30S
Controls amount of time from when doors are unlocked until
they are locked by automatic lock function.
60S/30S
UNLOCK/2OPER
ON
When UNLOCK switch is pressed once, this function un–
locks only the designated door. When unlock switch is
pressed again within 3 seconds, all doors unlock. If setting is
OFF, pressing UNLOCK switch once unlocks all doors.
ON/OFF
LNT/LGT ON/UNLK
ON
Turns on room light when wireless door lock system is oper-
ated.
ON/OFF
ALARM FUNCTION
ON
Operates theft deterrent system when transmitter LOCK
(PANIC) switch is held for 3 seconds.
ON/OFF
AUTO LOCK
OFF
Locks doors when the vehicle speed reaches a certain level.
ON/OFF
UNLK/KEY TWICE
ON
Unlocks only driver’s door when driver’s door key cylinder is
turned to unlock once, and unlocks all doors when it is turned
to unlock twice. In OFF setting, unlocks all doors when the
cylinder is turned to unlock once.
ON/OFF
ALL UNLK/OPN–CL
OFF
Function that unlocks all doors when the driver door is
opened after turning the ignition switch off.
ON/OFF
UNLOCK/PARK
OFF
Unlocks doors when shift lever is moved to P position from
any position other than P while the ignition switch is ON.
ON/OFF
THEFT:
DISPLAY (ITEM)
DEFAULT
CONTENTS
SETTING
WARNING TIME
15S
Changes warning time for PASSIVE MODE.
5S/15S/27.5S/60S
PASSIVE MODE
OFF
Switches theft deterrent system from arming preparation
state to armed state 30 seconds after key is removed from
ignition key cylinder and driver side door is closed, even if
doors are not locked by wireless or door key lock operation.
ON/OFF
WARN BY GLS SEN
ON
Function that switches the alarm warning on/off when glass
breakage is detected.
ON/OFF
IN–22
–
INTRODUCTION
FOR ALL OF VEHICLES
22
DOOR LOCK:
DISPLAY (ITEM)
DEFAULT
CONTENTS
SETTING
AUTO LOCK/SHIFT
ON
Locks doors when shift lever is moved from P to another
position.
ON/OFF
ILLUMINATED ENTRY:
DISPLAY (ITEM)
DEFAULT
CONTENTS
SETTING
I/L ON/UNLOCK
ON
Illuminates interior light when ignition switch is turned from
ACC to LOCK position.
ON/OFF
LIGHTING TIME
15S
Changes lighting time after closing doors (light quickly fades
out when ignition switch is turned on).
15S/7.5S/30S
LIGHT CONTROL:
DISPLAY (ITEM)
DEFAULT
CONTENTS
SETTING
SENSITIVITY
NORMAL
Sensitivity adjustment is difficult to confirm. Check by driving
the customer’s vehicle.
NORMAL/DARK2/DARK1/
LIGHT1/LIGHT2
LIGHT OFF DELAY
30S
Keeps headlights on for a certain period of time after closing
all doors with ignition switch on, light control switch in HEAD
or AUTO position, and headlights on.
OFF/30S/60S/90S
DISP EX ON SEN
NORMAL
Changes brightness of lights such as combination meter
indicator light, A/C indicator lamp, and clock lamp.
NORMAL/DARK2/DARK1/
LIGHT1/LIGHT2
DISP OFF SEN
NORMAL
Changes brightness of lights such as combination meter
indicator light, A/C indicator lamp, and clock lamp.
NORMAL/DARK2/DARK1/
LIGHT1/LIGHT2
IN01T–18
–
INTRODUCTION
HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
IN–23
23
HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS
GENERAL INFORMATION
A large number of ECU controlled systems are used in the SEQUOIA. In general, the ECU controlled system
is considered to be a very intricate system requiring a high level of technical knowledge and expert skill to
troubleshoot. However, the fact is that if you proceed to inspect the circuits one by one, troubleshooting of
these systems is not complex. If you have adequate understanding of the system and a basic knowledge
of electricity, accurate diagnosis and necessary repair can be performed to locate and fix the problem. This
manual is designed through emphasis of the above standpoint to help service technicians perform accurate
and effective troubleshooting, and is compiled for the following major ECU controlled systems:
The troubleshooting procedure and how to make use of it are described on the following pages.
System
Page
1. Engine
2. Automatic Transmission
3. Air Suspension Control System
4. Tire Pressure Warning System
5. ABS with EBD & BA & TRAC & VSC System
6. Can Communication System
7. Supplemental Restraint System
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.Navigation System
22.Air Conditioning System
FOR USING OBD II SCAN TOOL OR TOYOTA HAND–HELD TESTER
Before using the scan tool or tester, the scan tool’s instruction book or tester’s operator manual should
be read thoroughly.
If the scan tool or tester cannot communicate with ECU controlled systems when you have connected
the cable of the scan tool or tester to DLC3, turned the ignition switch ON and operated the scan tool,
there is a problem on the vehicle side or tool side.
(1)
If communication is normal when the tool is connected to another vehicle, inspect the diagnosis
data link line (Bus
line) or ECU power circuit of the vehicle.
(2)
If communication is still not possible when the tool is connected to another vehicle, the problem
is probably in the tool itself, so perform the Self Test procedures outline in the Tester Operator’s
Manual.
IN01U–14
Vehicle Brought to Workshop
Customer Problem
Analysis
Symptom Confirmation
and Diagnostic Trouble
Code Check
Symptom Simulation
Diagnostic Trouble
Code Chart
Problem Symptoms Table
Circuit Inspection or Parts
Inspection
Repair
Confirmation Test
End
1
2
4
3
5
6
7
8
Ask the customer about the conditions and the
environment when the problem occurred.
1
Confirm the symptoms and the problem conditions,
and check the diagnostic trouble codes.
(When the problem symptoms do not appear
during confirmation, use the symptom simulation
method described later.)
2, 3
Check the results obtained in Step 2, then confirm
the inspection procedure for the system or the part
which should be checked using the diagnostic
trouble code chart or the problem symptoms table.
4, 5, 6
Check and repair the affected system or part in
accordance with the instructions in Step 6.
7
After completing repairs, confirm that the problem
has been eliminated.
(If the problem is not reproduced, perform the
confirmation test under the same conditions and
in the same environment as when it occurred for
the first time.)
8
IN–24
–
INTRODUCTION
HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
24
HOW TO PROCEED WITH TROUBLESHOOTING
Carry out troubleshooting in accordance with the procedure on the following page. Here, only the basic pro-
cedure is shown. Details are provided in Diagnostics section, showing the most effective methods for each
circuit. Confirm the troubleshooting procedures first for the relevant circuit before beginning troubleshooting
of that circuit.
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