2001 TOYOTA SEQUOIA compression ratio

B04770
IN±18
± INTRODUCTIONFOR ALL OF VEHICLES
18 Author: Date:
2005 SEQUOIA (RM1146U)
(4) Check that the VSC TRAC warning light blinks.
(5) After the measurement, remove the SST and re-
start the engine. At this time, make sure that the
VSC TRAC warning light is off.
(b) Notice in VSC operation.
(1) Removal and reinstallation of VSC±related compo-
nents may cause misadjustment of them. Do not re-
move or reinstall them unless necessary.
(2) When conducting VSC±related operations, do not
fail to make sure that the preparation and the finish-
ing of the operation are all performed in accordance
with the direction in this text.
3. FOR VEHICLES EQUIPPED WITH A CATALYTIC CONVERTER
CAUTION:
If a large amount of unburned gasoline flows into the converter, it may overheat and create a fire haz-
ard. To prevent this, observe the following precautions and explain them to your customer.
(a) Use only unleaded gasoline.
(b) Avoid prolonged idling.
Avoid running the engine at idle speed for more than 20 minutes.
(c) Avoid spark jump test.
(1) Perform spark jump test only when absolutely necessary. Perform this test as rapidly as possible.
(2) While testing, never race the engine.
(d) Avoid prolonged engine compression measurement.
Engine compression tests must be done as rapidly as possible.
(e) Do not run engine when fuel tank is nearly empty.
This may cause the engine to misfire and create an extra load on the converter.
(f) Avoid coasting with ignition turned off.
(g) Do not dispose of used catalyst along with parts contaminated with gasoline or oil.
4. IF VEHICLE IS EQUIPPED WITH MOBILE COMMUNICATION SYSTEM
For vehicles with mobile communication systems such as two±way radios and cellular telephones, observe
the following precautions.
(1) Install the antenna as far as possible away from the ECU and sensors of the vehicle's electronic
system.
(2) Install the antenna feeder at least 20 cm (7.87 in.) away from the ECU and sensors of the ve-
hicle's electronic systems. For details about ECU and sensor locations, refer to the section on
the applicable component.
(3) Do not wind the antenna feeder together with the other wiring as much as possible, also avoid
running the antenna feeder parallel with other wire harness.
(4) Check that the antenna and feeder are correctly adjusted.
(5) Do not install powerful mobile communication system.

PP1BM±08
± PREPARATIONENGINE MECHANICAL
PP±7
65 Author: Date:
2005 SEQUOIA (RM1146U)
EQUIPMENT
Caliper gauge
CO/HC meter
Compression gauge
Connecting rod aligner
Cylinder gauge
Dial indicator
Dye penetrant
Engine tune±up tester
Groove cleaning tool
Heater
Magnetic finger
Micrometer
OBD II scan tool
Pin hole grinder
Piston ring compressor
Piston ring expander
Plastigage
Precision straight edge
Press
Ridge reamer
Soft brush
Solvent
Spring testerValve spring
Steel squareValve spring
Thermometer
Torque wrench
Valve seat cutter
Vernier calipers
V±block
Wire brushValve

DI3HJ±10
± DIAGNOSTICSENGINE
DI±33
227 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
SymptomSuspect AreaSee page
Engine does not crank (Does not start)
22.Starter
23.Starter relay
24.Park/neutral position switchST±15
ST±17
DI±576
No initial combustion (Does not start)
1. ECM power source circuit
2. Fuel pump control circuit
3. Engine control module (ECM)DI±493
DI±509
IN±35
No complete combustion (Does not start)1. Fuel pump control circuitDI±509
Engine cranks normally but difficult to start
1. Starter signal circuit
2. Fuel pump control circuit
3. CompressionDI±298
DI±509
EM±3
Difficult to start with cold engine1. Starter signal circuit
2. Fuel pump control circuitDI±298
DI±509
Difficult to start with hot engine1. Starter signal circuit
2. Fuel pump control circuitDI±298
DI±509
High engine idle speed (Poor idling)1. A/C switch circuit
2. ECM power source circuit±
DI±493
Low engine idle speed (Poor idling)1. A/C switch circuit
2. Fuel pump control circuit±
DI±509
Rough idling (Poor idling)1. Compression
2. Fuel pump control circuitEM±3
DI±509
Hunting (Poor idling)1. ECM power source circuit
2. Fuel pump control circuitDI±493
DI±509
Hesitation/Poor acceleration (Poor driveability)1. Fuel pump control circuit
2. A/T faultyDI±509
±
Surging (Poor driveability)1. Fuel pump control circuitDI±509
Engine stalls soon after starting1. Fuel pump control circuitDI±509
Engine stalls during A/C operation1. A/C switch circuit
2. Engine control module (ECM)±
IN±35
Unable to refuel/Difficult to refuel1. ORVR system±

A20646
20 V
/Division Injector Signal Waveform
20 V
/Division
GND
100 msec./Division (Idling)(Magnification)
GND
1 msec./Division (Idling)
Injection duration
± DIAGNOSTICSENGINE
DI±185
379 Author: Date:
2005 SEQUOIA (RM1146U)DTC No.
DTC Detecting ConditionTrouble Area
P0300Misfiring of random cylinders is detected

Open or short in engine wire

Connector connection

Vacuum hose connection
P0301
P0302
P0303
P0304
P0305
P0306
P0307
P0308
Misfiring of each cylinder is detected

Vacuum hose connection

Ignition system

Injector

Fuel pressure

Mass air flow meter

Engine coolant temperature sensor

Compression pressure

Valve clearance

Valve timing

PCV piping

ECM
HINT:
When several codes for a misfiring cylinder are recorded repeatedly but no random misfire code is recorded,
it indicates that the misfires have been detected and recorded at different times.
Reference: Inspection using the oscilloscope.
With the engine idling, check the waveform between terminals #1 to #8 and E01 of the ECM connectors.
HINT:
The correct waveform is as shown in the illustration.

F06734
Plate Washer A
Plate Washer BSST
Screw
R12472
SST
Retaining Ring SR±18
± STEERINGTILT STEERING COLUMN
3245 Author: Date:
2005 SEQUOIA (RM1146U)
9. REMOVE STEERING COLUMN HOUSING WITH MAIN
SHAFT ASSEMBLY
(a) Set SST, 2 plate washers (18 and 36 mm outer diameter)
and a screw (4.0 mm diameter, 0.7 mm pitch, 15.0 mm
length), as shown in the illustration. Then remove the 2
pivot pins.
SST 09910±00015 (09911±00011, 09912±00010)
Reference
Plate washer A (18 mm): 90562±04012
Plate washer B (36 mm): 90201±10201
Screw: 90154±40015
(b) Remove the column housing with the shaft assembly from
the column tube assembly.
NOTICE:
Do not bend the universal joint of the main shaft assembly
more than 15°.
(c) Remove the tilt spring and spring guide.
10. REMOVE 2 TILT NO. 1 STOPPERS
11. REMOVE MAIN SHAFT STOPPER
12. REMOVE MAIN SHAFT ASSEMBLY
(a) Install SST to the main shaft assembly, as shown in the
illustration.
SST 09612±07010
(b) Using SST, compress the compression spring.
SST 09612±07010
NOTICE:
Do not bend the universal joint of the shaft assembly more
than 15°.
HINT:
Hold the shaft assembly with your hand to prevent rotation.
(c) Using a screwdriver, remove the No. 2 steering column
ring.
(d) Remove the spring retainer, compression spring, upper
bearing inner race seat and inner race.
13. REMOVE TILT LEVER
Remove the tilt lever lock shaft and shift lever.

I22614
Condition: Insufficient cooling
Single A/C:
Dual A/C:
I22615
Condition: Does not cool
Single A/C:
Dual A/C: AC±8
± AIR CONDITIONINGAIR CONDITIONING SYSTEM
3735 Author: Date:
2005 SEQUOIA (RM1146U)
(8) Expansion valve malfunction
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy

Pressure too high on both low
and high pressure sides

Frost or large amount of dew on
piping on low pressure side
Trouble in expansion valve

Excessive refrigerant in low
pressure piping

Expansion valve opened too
wide
Check expansion valve
Replace if defective
(9) Insufficient compressor compression
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy

Pressure too high on both low
and high pressure sides

Pressure too low on high pres-
sure side
Internal leak in compressor

Low compression

Leak from valve or broken sliding
parts
Repair or replace compressor

05_SEQUOIA_U (L/O 0408)
279
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
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