2001 TOYOTA SEQUOIA terminal TC

FI7187
IN0379
Sensor Side
ECU Side
IN0378
Sensor SideECU Side
IN0380
Sensor SideECU Side
IN0381
Pull Lightly
Looseness of Crimping
IN±36± INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
36 Author: Date:
2005 SEQUOIA (RM1146U)
2. CONNECTOR HANDLING
When inserting tester probes into a connector, insert them from
the rear of the connector. When necessary, use mini test leads.
For water resistant connectors which cannot be accessed from
behind, take good care not to deform the connector terminals.
3. CONTINUITY CHECK (OPEN CIRCUIT CHECK)
(a) Disconnect the connectors at both ECU and sensor
sides.
(b) Measure the resistance between the applicable terminals
of the connectors.
Resistance: 1 W or less
HINT:
Measure the resistance while lightly shaking the wire harness
vertically and horizontally.
4. RESISTANCE CHECK (SHORT CIRCUIT CHECK)
(a) Disconnect the connectors on both ends.
(b) Measure the resistance between the applicable terminals
of the connectors and body ground. Be sure to carry out
this check on the connectors on both ends.
Resistance: 1 MW or higher
HINT:
Measure the resistance while lightly shaking the wire harness
vertically and horizontally.
5. VISUAL CHECK AND CONTACT PRESSURE CHECK
(a) Disconnect the connectors at both ends.
(b) Check for rust or foreign material, etc. in the terminals of
the connectors.
(c) Check crimped portions for looseness or damage and
check that the terminals are secured in lock portion.
HINT:
The terminals should not come out when pulled lightly from the
back.

Z17004
Fig. 1
OPENECU
2 Sensor
22 21 111A B C
Z17005
Fig. 2
ECU
Sensor
21A
B C
1
1
22
B04722
Fig. 3
ECU
Sensor
21A
B1
C
1
1
221
2 B2
± INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMSIN±37
37 Author: Date:
2005 SEQUOIA (RM1146U)
(d) Prepare a test male terminal and insert it in the female ter-
minal, then pull it out.
NOTICE:
When testing a gold±plated female terminal, always use a
gold±plated male terminal.
HINT:
When the test terminal is pulled out more easily than others,
there may be poor contact in that section.
6. CHECK OPEN CIRCUIT
For an open circuit in the wire harness in Fig. 1, perform º(a)
Continuity Checkº or º(b) Voltage Checkº to locate the section.
(a) Check the continuity.
(1) Disconnect connectors ºAº and ºCº and measure
the resistance between them.
In the case of Fig. 2:
Between terminal 1 of connector ºAº and terminal 1
of connector ºCº " No continuity (open)
Between terminal 2 of connector ºAº and terminal 2
of connector ºCº " Continuity
Therefore, it is found out that there is an open circuit
between terminal 1 of connector ºAº and terminal 1
of connector ºCº.
(2) Disconnect connector ºBº and measure the resis-
tance between the connectors.
In the case of Fig. 3:
Between terminal 1 of connector ºAº and terminal 1
of connector ºB1º " Continuity
Between terminal 1 of connector ºB2º and terminal
1 of connector ºCº " No continuity (open)
Therefore, it is found out that there is an open circuit
between terminal 1 of connector ºB2º and terminal
1 of connector ºCº.

Z17007
Fig. 4
Sensor
21A
C
1
1
22B5V
5V
5V
0V
Z17008
Fig. 5
2 1A C
1
1
22
BSHORT
Z17009
Fig. 6
21A C
1
1
22
BSensorECU IN±38
± INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
38 Author: Date:
2005 SEQUOIA (RM1146U)
(b) Check the voltage.
In a circuit in which voltage is applied (to the ECU connec-
tor terminal), an open circuit can be checked by conduct-
ing a voltage check.
As shown in Fig. 4, with each connector still con-
nected, measure the voltage between body ground
and terminal 1 of connector ºAº at the ECU 5V out-
put terminal, terminal 1 of connector ºBº, and termi-
nal 1 of connector ºCº, in that order.
If the results are:
5V: Between Terminal 1 of connector ºAº and Body Ground
5V: Between Terminal 1 of connector ºBº and Body Ground
0V: Between Terminal 1 of connector ºCº and Body Ground
Then it is found out that there is an open circuit in the wire har-
ness between terminal 1 of ºBº and terminal 1 of ºCº.
7. CHECK SHORT CIRCUIT
If the wire harness is shorted as in Fig. 5, locate the section by
conducting a ºcontinuity check with groundº.
Check the continuity with ground.
(1) Disconnect connectors ºAº and ºCº and measure
the resistance between terminals 1 and 2 of con-
nector ºAº and body ground.
In the case of Fig. 6:
Between terminal 1 of connector ºAº and body
ground " Continuity (short)
Between terminal 2 of connector ºAº and body
ground " No continuity
Therefore, it is found out that there is a short circuit
between terminal 1 of connector ºAº and terminal 1
of connector ºCº.

Z17808
Fig. 7
Sensor
21A B1 C
1
1
221
2 B2
ECU
IN0383
Example
Ground
IN0384
Ground
Ground
ECU Side
W/H Side
± INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMSIN±39
39 Author: Date:
2005 SEQUOIA (RM1146U)
(2) Disconnect connector ºBº and measure the resis-
tance between terminal 1 of connector ºAº and body
ground, and terminal 1 of connector ºB2º and body
ground.
In the case of Fig. 7:
Between terminal 1 of connector ºAº and body
ground " No continuity
Between terminal 1 of connector ºB2º and body
ground " Continuity (short)
Therefore, it is found out that there is a short circuit
between terminal 1 of connector ºB2º and terminal
1 of connector ºCº.
8. CHECK AND REPLACE ECU
First check the ECU ground circuit. If it is faulty, repair it. If it is
normal, the ECU could be faulty, so replace the ECU with a nor-
mal functioning one and check that the symptoms appear.
(1) Measure the resistance between the ECU ground
terminal and the body ground.
Resistance: 1 W or less
(2) Disconnect the ECU connector, check the ground
terminals on the ECU side and the wire harness
side for bend and check the contact pressure.

SS0OQ±12
SS±4
± SERVICE SPECIFICATIONSENGINE MECHANICAL
146 Author: Date:
2005 SEQUOIA (RM1146U)
ENGINE MECHANICAL
SERVICE DATA
Compression
pressureat 250 rpm STD
Minimum
Difference of pressure between each cylinder1,373 kPa (14.0 kgf/cm2, 199 psi) or more
1,030 kPa (10.5 kgf/cm2, 149 psi)
98 kPa (1.0 kgf/cm2, 14 psi) or less
Valve
clearanceat cold Intake
Exhaust
Valve clearance adjusting shim No.00
No.02
No.04
No.06
No.08
No.10
No.12
No.14
No.16
No.18
No.20
No.22
No.24
No.26
No.28
No.30
No.32
No.34
No.36
No.38
No.40
No.42
No.44
No.46
No.48
No.50
No.52
No.54
No.56
No.58
No.60
No.62
No.64
No.66
No.68
No.70
No.72
No.74
No.76
No.78
No.800.15 to 0.25 mm (0.006 to 0.010 in.)
0.25 to 0.35 mm (0.010 to 0.014 in.)
2.000 mm (0.0787 in.)
2.020 mm (0.0795 in.)
2.040 mm (0.0803 in.)
2.060 mm (0.0811 in.)
2.080 mm (0.0819 in.)
2.100 mm (0.0827 in.)
2.120 mm (0.0835 in.)
2.140 mm (0.0843 in.)
2.160 mm (0.0850 in.)
2.180 mm (0.0858 in.)
2.200 mm (0.0866 in.)
2.220 mm (0.0874 in.)
2.240 mm (0.0882 in.)
2.260 mm (0.0890 in.)
2.280 mm (0.0898 in.)
2.300 mm (0.0906 in.)
2.320 mm (0.0913 in.)
2.340 mm (0.0921 in.)
2.360 mm (0.0929 in.)
2.380 mm (0.0937 in.)
2.400 mm (0.0945 in.)
2.420 mm (0.0953 in.)
2.440 mm (0.0961 in.)
2.460 mm (0.0969 in.)
2.480 mm (0.0976 in.)
2.500 mm (0.0984 in.)
2.520 mm (0.0992 in.)
2.540 mm (0.1000 in.)
2.560 mm (0.1008 in.)
2.580 mm (0.1016 in.)
2.600 mm (0.1024 in.)
2.620 mm (0.1031 in.)
2.640 mm (0.1039 in.)
2.660 mm (0.1047 in.)
2.680 mm (0.1055 in.)
2.700 mm (0.1063 in.)
2.720 mm (0.1071 in.)
2.740 mm (0.1079 in.)
2.760 mm (0.1087 in.)
2.780 mm (0.1094 in.)
2.800 mm (0.1102 in.)
Ignition timingw/ Terminals TC and E1 connected of DLC15 to15° BTDC @ idle
Idle speed±700 ± 50 rpm
Timing belt
tensionerProtrusion from housing end10.5 to 11.5 mm (0.413 to 0.453 in.)

SS0PL±02
± SERVICE SPECIFICATIONSSTARTING
SS±21
163 Author: Date:
2005 SEQUOIA (RM1146U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Terminal 30 nut, Terminal C nut x Terminal bolt1717013
End cover x Magnetic switch housing3.63732 in.´lbf
End cover x Brush holder3.83934 in.´lbf
Starter hosing x Magnetic switch9.39582 in.´lbf
End cover with field frame x Magnetic switch9.39582 in.´lbf
Lead wire of field coil x Terminal C5.96052 in.´lbf
Wire clamp, Starter wire x Starter9.8110087 in.´lbf
Starter x Cylinder block3940029

DID7M±01
± DIAGNOSTICSENGINE
DI±1
195 Author: Date:
2005 SEQUOIA (RM1146U)
ENGINE
PRECAUTION
NOTICE:

When disconnecting the battery terminal, initialize the following system after the terminal is re-
connected.
System NameSee Page
Back Door Power Window Control SystemBE±77

Perform the RESET MEMORY (AT initialization) when replacing the automatic transmission as-
sembly, engine assembly or ECM (See page DI±543).
HINT:
Initialization can not be completed by only removing the battery.

DID7Q±01
B17429
ECM
IG SW
IGSW
STSW
STAR/NSW
STA
BATT
MREL
+BM
+B
+B2
VCPA
VPA
EPA
VCP2
VPA2
EPA2W
OC1+
OC1±
OC2+
OC2±
KNK1
EKNK
KNK2
EKN2
G2+
G2±
NE+
NE±
VV1+
VV1±
VV2+
VV2± ETCSMIL
To Battery
To Battery
To Battery
To BatteryTo Starter ST Relay
PNP SW
EFI No.1
EFI No.1 Relay
Acclererator Pedal
Position SensorCombination Meter
VVT OCV
(Bank 1)
VVT OCV
(Bank 2)
Knock Sensor
(Bank 1)
Knock Sensor
(Bank 2)
Camshaft Position
SensorTo V C
Terminal
Crankshaft
Position Sensor
VVT Sensor
(Bank 1)
VVT Sensor
(Bank 2) DI±6
± DIAGNOSTICSENGINE
200 Author: Date:
2005 SEQUOIA (RM1146U)
SYSTEM DIAGRAM