Toyota Sequoia (2005). Manual — part 51
B17430
HA1A
A1A+
A1A–
HA2A
A2A+
A2A–
HT1B
OXIB
HT2B
OX2B
E2
PRG
ACIS
AIV1
AIV2
THA
E2G
VG
E2
THW
PPMP
VPMP
MPMP
#10
#20
#30
#40
#50
#60
#70
#80
IGT1
IGT2
IGT3
IGT4
IGT5
IGT6
IGT7
IGT8
IGF1
IGF2
To A/F Relay
A/F Sensor
(Bank 1 Sensor 1)
A/F Sensor
(Bank 2 Sensor 1)
HO2 Sensor
(Bank 1 Sensor 2)
HO2 Sensor
(Bank 2 Sensor 2)
To EFI Relay
To EFI No.2
Fuse
VSV (EVAP)
VSV (ACIS)
VSV (AI Control)
VSV (AI Control)
Mass Air Flow
Meter
ETC Sensor
Pump Modul
Pressure
Sensor
Control
Valve
To VC
Terminal
To Battery
IGN2
Fuel Injector #1
Fuel Injector #2
Fuel Injector #3
Fuel Injector #4
Fuel Injector #5
Fuel Injector #6
Fuel Injector #7
Fuel Injector #8
Ignition Coil and
Igniter No.1
Ignition Coil and
Igniter No.2
Ignition Coil and
Igniter No.3
Ignition Coil and
Igniter No.4
Ignition Coil and
Igniter No.5
Ignition Coil and
Igniter No.6
Ignition Coil and
Igniter No.7
Ignition Coil and
Igniter No.8
–
DIAGNOSTICS
ENGINE
DI–7
201
B17431
AIDI
AIRP
AIRV
AIP
GE01
M+
M–
VTA1
VC
VTA2
FC
FPR
ACCR
ST1–
STP
E01
E02
E04
E05
E1
E03
ME01
EC
EOM
TC
CANL
CANH
IMI
IMO
DLC3
CG
TC
CANL
CANH
ASV
AI Driver
To EFI Relay
To Battery
To Battery
To Battery
To E2
Terminal
To E2
Terminal
To IG SW
Air Pump
Pressure
Sensor
Throttle Body
C/OPN Relay
Fuel Pump Relay
Fuel Pump Resister
Fuel Pump
Transponder Key
Computre
Stop Light SW
To IGN1 Fuse
To EFI
Relay
ACC Cut Relay
To Battery
DI–8
–
DIAGNOSTICS
ENGINE
202
DI3H8–10
Vehicle Brought to Workshop
Customer Problem Analysis P.
Problem Symptom Confirmation
If the engine does not start perform steps 10 and 12 first
Connect the OBD II scan tool or hand–held tester to DLC3.
If the display indicates a communication fault in the tool, inspect DLC3 P.
Check DTC and Freeze Frame Data
Record or Print DTC and Freeze Frame Data P.
Clear DTC and Freeze Frame Data P.
Visual Inspection
Setting the Check Mode Diagnosis P.
DTC Chart P.
Circuit Inspection P.
Adjustment, Repair
DTC Check P.
Items inside
are titles of pages in
in the bottom portion. See the indicated
pages for detailed explanations.
this manual, with the page number
Malfunction
occurs.
Malfunction does not occur.
Parts Inspection
Check for Intermittent Problems P.
Identification of Problem
Confirmation Test
End
1
2
3
4
5
6
7
10
8
9
11
12
13
15
14
16
Normal
Malfunction code.
17
The hand–held tester can be used at
bold frame.
–
DIAGNOSTICS
ENGINE
DI–9
203
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshoot in accordance with the procedure on the following page.
DI3H9–07
ENGINE CONTROL SYSTEM Check Sheet
Customer’s Name
Driver’s Name
Data Vehicle
Brought in
Engine model
VIN
Production Date
Licence Plate No.
Odometer Reading
Problem Symptoms
Engine does
not Start
Difficult to
Start
Poor Idling
Poor
Driveability
Engine Stall
Others
Engine does not crank
No initial combustion
No complete combustion
Engine cranks slowly
Other
Incorrect first idle
Idling rpm is abnormal
High ( rpm)
Low ( rpm)
Rough idling
Other
Hesitation
Back fire
Muffler explosion (after–fire)
Surging
Knocking
Other
Soon after starting
After accelerator pedal depressed
After accelerator pedal released
During A/C operation
Shifting from N to D
Other
Problem Frequency
Condition When
Problem Occurs
Weather
Engine Operation
Engine Temp.
Place
Outdoor
Temperature
Constant
Sometimes ( times per day/month)
Once only
Other
Fine
Cloudy
Rainy
Snowy
Various/Other
Hot
Warm
Cool
Cold (approx.
°
C/
°
F)
Highway
Suburbs
Inner city
Uphill
Downhill
Rough road
Other
Cold
Warming up
After warming up
Any temp.
Other
Starting
Just after starting ( min.)
Idling
Racing
Driving
Constant speed
Acceleration
Deceleration
A/C switch ON/OFF
Other
Condition of malfunction indicator light
Remains on
Sometimes lights up
Does not light up
Normal
Malfunction code(s) (code )
Freeze frame data ( )
Normal
Malfunction code(s) (code )
Freeze frame data ( )
Normal Mode
(Pre–check)
Check Mode
DTC Inspection
Inspector’s
Name
km
miles
(MIL)
DI–10
–
DIAGNOSTICS
ENGINE
204
CUSTOMER PROBLEM ANALYSIS CHECK
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