TOYOTA SEQUOIA 2001 Service Repair Manual

SF1XT±01
B07643
Continuity
2 1 Ohmmeter
Ohmmeter
3
No Continuity5
B07644
2 1
Ohmmeter
3 4
Battery
Continuity
± SFIFUEL PUMP RELAY
SF±59
2793 Author: Date:
2005 SEQUOIA (RM1146U)
FUEL PUMP RELAY
INSPECTION
1. REMOVE RELAY BOX COVER
2. REMOVE FUEL PUMP RELAY (Marking: F/P)
3. INSPECT FUEL PUMP RELAY CONTINUITY
(a) Using an ohmmeter, check that there is continuity be-
tween terminals 1 and 2.
If there is no continuity, replace the relay.
(b) Check that there is continuity between terminals 3 and 4.
If there is no continuity, replace the relay.
4. INSPECT FUEL PUMP RELAY OPERATION
(a) Apply battery positive voltage across terminals 1 and 2.
(b) Using an ohmmeter, check that there is no continuity be-
tween terminals 3 and 4.
If there is continuity, replace the relay.
5. REINSTALL FUEL PUMP RELAY
6. REINSTALL RELAY BOX COVER

SF138±05
B17500
Fuel Pump Resistor
8.0 (82, 71 in.´lbf)
N´m (kgf´cm, ft´lbf) : Specified torque
SF±60
± SFIFUEL PUMP RESISTOR
2794 Author: Date:
2005 SEQUOIA (RM1146U)
FUEL PUMP RESISTOR
COMPONENTS

SF139±05
B17501
Ohmmeter
± SFIFUEL PUMP RESISTOR
SF±61
2795 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. REMOVE FUEL PUMP RESISTOR
2. INSPECT FUEL PUMP RESISTOR
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance: 0.70 to 0.76 W at 20°C (68°F)
If the resistance is not as specified, replace the resistor.
3. REINSTALL FUEL PUMP RESISTOR
Torque: 8.0 N´m (82 kgf´cm,71 in.´lbf)

SF0Y7±10
B17502
VSV for EVAP
EVAP HoseEVAP Hose
N´m (kgf´cm, ft´lbf) : Specified torque
18 (184, 13)
SF±62
± SFIVSV FOR EVAPORATIVE EMISSION (EVAP)
2796 Author: Date:
2005 SEQUOIA (RM1146U)
VSV FOR EVAPORATIVE EMISSION (EVAP)
COMPONENTS

B16402
Ohmmeter
Continuity
SF0PJ±10
B16403
Ohmmeter
No Continuity
B16404
Air
B16405Battery Air
± SFIVSV FOR EVAPORATIVE EMISSION (EVAP)
SF±63
2797 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. REMOVE VSV
2. INSPECT VSV
(a) Inspect the VSV for open circuit.
Using an ohmmeter, check that there is continuity be-
tween the terminals.
Resistance: 30 to 34 W at 20°C (68°F)
If there is no continuity, replace the VSV.
(b) Inspect the VSV for ground.
Using an ohmmeter, check that there is no continuity be-
tween each terminal and the body.
If there is continuity, replace the VSV.
(c) Inspect the VSV operation.
(1) Check that air dose not flow from port.
(2) Apply battery positive voltage across the terminals.
(3) Check that air flows from port.
If operation is not as specified, replace the VSV.
3. REINSTALL VSV

SF0PN±14
B17471
PS Air Hose
PCV Hose
Intake Air Connector

GasketECT Sensor
Connector
ECT Sensor
N´m (kgf´cm, ft´lbf) : Specified torque

Non±reusable part
Vacuum HoseThrottle Body Cover
MAF Meter Wire
Suction Hose
20 (204, 15)
SF±64
± SFIENGINE COOLANT TEMPERATURE (ECT) SENSOR
2798 Author: Date:
2005 SEQUOIA (RM1146U)
ENGINE COOLANT TEMPERATURE (ECT) SENSOR
COMPONENTS

SF0PO±19
B02308
S01196S01699Z17274
Ohmmeter
Resistance kW
Temperature °C (°F) Acceptable 30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
40 ±20 0 20 60 80 100
(212) (176) (140) (104) (68) (32) (±4)
± SFIENGINE COOLANT TEMPERATURE (ECT) SENSOR
SF±65
2799 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. DRAIN ENGINE COOLANT
2. REMOVE THROTTLE BODY COVER
3. REMOVE INTAKE AIR CONNECTOR
4. DISCONNECT THROTTLE BODY FROM INTAKE MAN-
IFOLDS
Remove the nut and 3 bolts, and disconnect the throttle body
from the intake manifold.
5. REMOVE ECT SENSOR
(a) Disconnect the ECT sensor connector.
(b) Remove the ECT sensor and gasket.
6. INSPECT ECT SENSOR
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance: Refer to the graph
If the resistance is not as specified, replace the ECT sensor.
7. REINSTALL ECT SENSOR
(a) Install a new gasket and the ECT sensor.
Torque: 19.6 N´m (200 kgf´cm, 14 ft´lbf)
(b) Connect the ECT sensor connector.
8. REINSTALL THROTTLE BODY TO INTAKE MAN-
IFOLDS
Install a new gasket and the throttle body with the 2 bolts and
2 nuts.
Torque: 20 N´m (204 kgf´cm, 15 ft´lbf)
9. REINSTALL INTAKE AIR CONNECTOR
10. REFILL WITH ENGINE COOLANT (See page CO±2)
11. REINSTALL THROTTLE BODY COVER

SF0PR±17
B17459
Throttle Body Cover
PS Air Hose
Intake Air Connector
Suction Hose
MAF Meter Wire
PCV Hose
Vacuum Hose
SF±66
± SFIKNOCK SENSOR
2800 Author: Date:
2005 SEQUOIA (RM1146U)
KNOCK SENSOR
COMPONENTS

B17473
Engine Wire Clamp
Injector Connector

Gasket
18 (185, 13)
N´m (kgf´cm, ft´lbf): Specified torque

Non±reusable part
18 (185, 13)
Knock Sensor 2
VSV Connector
for EVAP
Fuel Inlet Hose
Knock Sensor 1Fuel Return Hose
Intake Manifold
Assembly
Engine Wire
20 (204, 15)20 (204, 15)
Air Pump Assembly
16 (163, 12)
16 (163, 12)
± SFIKNOCK SENSOR
SF±67
2801 Author: Date:
2005 SEQUOIA (RM1146U)

SF1XU±01
B17474
B17475
B17503
Engine
Rear
Engine
RearUpper
Upper
0° ± 10°0° ± 10° SF±68
± SFIKNOCK SENSOR
2802 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. REMOVE THROTTLE BODY COVER
2. REMOVE INTAKE AIR CONNECTOR
3. REMOVE INTAKE MANIFOLDS ASSEMBLY
(See page EM±36)
4. INSPECT KNOCK SENSORS 1 AND 2
(a) Disconnect the knock sensor connectors.
(b) Using an ohmmeter, measure the resistance between ter-
minals.
Resistance: 120 to 280 kW at 20°C (68°F)
HINT:
If the resistance is not as specified, replace the sensor.
5. REMOVE KNOCK SENSOR
(a) Disconnect the 2 knock sensor connectors.
(b) Remove the 2 nuts and 2 knock sensors.
6. INSTALL KNOCK SENSOR
(a) Install the 2 knock sensors with the 2 nuts as shown in the
illustration.
Torque: 20 N´m (204 kgf´cm, 15 ft´lbf)
(b) Connect the 2 knock sensor connectors.
7. INSTALL INTAKE MANIFOLD ASSEMBLY
(See page EM±60)
8. INSTALL INTAKE AIR CONNECTOR
9. INSTALL THROTTLE BODY COVER