2001 TOYOTA SEQUOIA O2 sensor harness

D14165
Sensor Side:
(Connector Front View):
21 V2
D14166
ECM:
SP2+ SP2±E8E7E6E5E4
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±599
793 Author: Date:
2005 SEQUOIA (RM1146U)
2 Inspect speed sensor SP2.
PREPARATION:
Disconnect the speed sensor connector from the transmission.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
20 C (68 F)
1 ± 2560 to 680 W
NG Replace speed sensor SP2 (See page AT±5).
OK
3 Check harness and connector (ECM ± speed sensor SP2).
PREPARATION:
(a) Connect the speed sensor connector.
(b) Disconnect the ECM connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
20C (68F)
E7 ± 34 (SP2+) ± E7 ± 26 (SP2±)560 to 680 W
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
E7 ± 34 (SP2+) ± Body ground10 kW or higher
E7 ± 26 (SP2±) ± Body ground=
NG Repair or replace the harness or connector
(See page IN±35).
OK
Replace the ECM (See page SF±80).

F19456
Wire Harness Connector
Front View:
H15
SHB
SHG
F16805
S25
Suspension Control ECU
Wire Harness View:
SGL
SBL
F19456
Height Control Sensor Sub±assy
Connector Front View:
SHG H15
SHB
± DIAGNOSTICSAIR SUSPENSION SYSTEM
DI±733
927 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check harness and connector (Height control sensor sub±assy power source).
PREPARATION:
(a) Disconnect the height control sensor sub±assy connec-
tor.
(b) Turn the ignition switch ON.
CHECK:
Measure the voltage between terminals 1 (SHB) and 3 (SHG)
of the height control sensor sub±assy wire harness side con-
nector.
OK:
Voltage: 4.5 to 5.5 V
OK Go to step 4.
NG
3 Check harness and connector (Height control sensor sub±assy ± Suspension
control ECU).
PREPARATION:
Disconnect the ECU connector.
CHECK:
(a) Check for an open or short circuit in the harness and the
connector between terminal 1 (SHB) of the height control
sensor sub±assy and S25±15 (SBL) of the suspension
control ECU.
(b) Check for an open or short circuit in the harness and the
connector between terminal 3 (SHG) of the height control
sensor sub±assy and S25±19 (SGL) of the suspension
control ECU.
OK:
There is no open or short circuit in the wire harness.

F16805
S25
Suspension Control ECU
Wire Harness View:
SHRL
F19456
Height Control Sensor Sub±assy
Connector Front View:
H15
SHRL
DI±734
± DIAGNOSTICSAIR SUSPENSION SYSTEM
928 Author: Date:
2005 SEQUOIA (RM1146U)
NG Repair or replace harness or connector.
OK
4 Check harness and connector (Height control sensor sub±assy ± Suspension
control ECU.
CHECK:
Check for an open or short circuit in the harness and the con-
nector between terminal 2 (SHRL) of the height control sensor
sub±assy and S25±17 (SHRL) of the suspension control ECU.
OK:
There is no open or short in the wire harness.
NG Repair or replace harness or connector.
OK

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±813
1007 Author: Date:
2005 SEQUOIA (RM1146U)
DTC of SIGNAL CHECK (TEST DIAGNOSIS) function:
If a malfunction code is displayed during the test mode DTC check, check the circuit listed for that code. For
details of each code, refer to the ºSee Pageº under respective ºDTC No.º in the chart.
DTC No.
(See Page)Detection ItemTrouble Area
C2181/81
(DI±834)Transmitter ID1 not received

Tire pressure monitor receiver assy

Each tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Wire harness
C2182/82
(DI±834)Transmitter ID2 not received

Tire pressure monitor receiver assy

Each tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Wire harness
C2183/83
(DI±834)Transmitter ID3 not received

Tire pressure monitor receiver assy

Each tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Wire harness
C2184/84
(DI±834)Transmitter ID4 not received

Tire pressure monitor receiver assy

Each tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Wire harness
C2185/85
(DI±834)Transmitter ID5 not received

Tire pressure monitor receiver assy

Each tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Wire harness
C2191/91
(DI±870)Vehicle speed signal error

Vehicle speed sensor

Combination meter assy

Tire pressure monitor ECU

Wire harness

DI±826
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1020 Author: Date:
2005 SEQUOIA (RM1146U)C2165/65
(DI±847)
Abnormal temperature inside ID1 tire

Tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Tire pressure monitor receiver assy
C2166/66
(DI±847)Abnormal temperature inside ID2 tire

Tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Tire pressure monitor receiver assy
C2167/67
(DI±847)Abnormal temperature inside ID3 tire

Tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Tire pressure monitor receiver assy
C2168/68
(DI±847)Abnormal temperature inside ID4 tire

Tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Tire pressure monitor receiver assy
C2169/69
(DI±847)Abnormal temperature inside ID5 tire

Tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Tire pressure monitor receiver assy
C2171/71
(DI±852)Transmitter ID not registeredTire pressure monitor ECU
C2176/76
(DI±854)Receiver error

Tire pressure monitor receiver assy

Tire pressure monitor ECU

Wire harness
C2177/77
(DI±860)Initialization incomplete

Tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Tire pressure monitor receiver assy

Wire harness
C2191/91
(DI±870)Vehicle speed signal error

Vehicle speed sensor

Tire pressure monitor ECU

Combination meter

Wire harness

F19792
Combination Meter
Tire Pressure Monitor ECU
To BatterySPD G±O3
T17 C520
IEInstrument Panel J/BG±O
J8
J/C
AIF 10
1
1H11
T17GND
IG W±B W±B
T17 J17
J/C
BB
2 DI±870
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1064 Author: Date:
2005 SEQUOIA (RM1146U)
DTC C2191/91 Vehicle Speed Signal Error
CIRCUIT DESCRIPTION
The tire pressure monitor ECU receives a speed signal from the combination meter. This DTC is stored upon
entering test mode but erased when a vehicle speed signal of 12 mph (20 km/h) is detected for 3 seconds
or more. The DTC is output only in test mode.
DTC No.DTC Detecting ConditionTrouble Area
C2191/91Speed sensor circuit malfunction.

Vehicle speed sensor

Combination meter assy

Tire pressure monitor ECU

Wire harness
WIRING DIAGRAM
DIDKE±01

F19198
Skid Control ECU
(harness side connector) DI±908
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1102 Author: Date:
2005 SEQUOIA (RM1146U)Symbols (Terminal No.) Terminal Description
TS (40)Sensor check input
+BO (41)Steering angle sensor line
RL+ (42)RL wheel speed signal line
RL± (43)RL wheel speed signal line
VSCW (44)VSC OFF indicator output
FR± (45)FR wheel speed signal line
FR+ (46)FR wheel speed signal line
+BS (47)Solenoid relay power supply
2. Terminal Inspection
Disconnect the connector and measure the voltage on the wire harness side.
HINT:
Voltage can not be measured with the connector connected to the skid control ECU as the connector is water
resistance.
Symbols (Terminal No.)Wiring ColorTerminal DescriptionConditionSpecified Condition
+BM (16) ± GND1, 2 (1, 32)B±R ± W±BMotor relay power supplyIG switch ON10 to 14 V
GYAW (24) ± GND1, 2 (1, 32)G ± W±BYaw rate sensor groundAlwaysBelow 1 W
E3 (8) ± GND1, 2 (1, 32)L ± W±BM/C pressure sensor 3
groundAlwaysBelow 1 W
E2 (27) ± GND1, 2 (1, 32)W ± W±BM/C pressure sensor 2
groundAlwaysBelow 1 W
E1 (29) ± GND1, 2 (1, 32)W ± W±BM/C pressure sensor 1
groundAlwaysBelow 1 W
STP (39) ± GND1, 2 (1, 32)G±Y ± W±BStop light switch signal in-
putBrake pedal depressed8 to 14 V
STP (39) ± GND1, 2 (1, 32)G±Y ± W±BStop light switch signal in-
putBrake pedal releasedBelow 1.5 V
+BS (47) ± GND1, 2 (1, 32)B±R ± W±BSolenoid relay power sup-
plyIG switch ON10 to 14 V

BR3795OKNG
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±929
1123 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check for open and short circuit in harness and connector between each speed
sensor and skid control ECU (See page IN±35).
NG Repair or replace harness or connector.
OK
4 Check sensor installation.
CHECK:
Check the speed sensor installation.
OK:
The installation bolt is tightened properly and there is
no clearance between the sensor and the front steer-
ing knuckle or the rear axle carrier.
Torque: 8.0 N´m (82 kgf´cm, 71 in.´lbf)
NG Replace speed sensor
(See page BR±56 or BR±59).
NOTICE:
Check the speed sensor signal after replacement (See
page DI±899).
OK