check engine TOYOTA SEQUOIA 2001 Service Repair Manual

I18654
0.4 °
3 m (9.84 ft) H 20.9 mm
(0.823 in.)
7
V RH Line
90 °
V LH Line4V LH LineV Line V RH Line 65
6
V LH LineV Line
V RH Line 6
5
6
H4
O: step No.H4
20.9 mm
(0.823 in.) 1,348 mm (53.1 in.) Low Beam:
High Beam:29.7 mm
(1.17 in.)
20.9 mm
(0.823 in.)
1,348 mm (53.1 in.)
1,348 mm
(53.1 in.) High Beam
Low BeamH RH and
H LH
7
BE±32
± BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
3436 Author: Date:
2005 SEQUOIA (RM1146U)
2. ADJUST HEADLIGHT AIM ONLY
(a) Place the vehicle in the following conditions.

The area around the headlight is not deformed.

The vehicle is parked on a level surface.

Tire inflation pressure is the specified value.

A driver is in the driver's seat and the vehicle is in a state ready for driving (with a tank full).

The vehicle has been bounced several times.
(b) Check the headlight aiming.
(1) Prepare a thick white paper.
(2) Stand the paper perpendicular to the ground at the position 3 m (9.84 ft) away from the headlights
bulb center.
(3) Ensure that the center line of the vehicle and the paper face forms a 90±degree angle as shown
in the illustration.
(4) Draw a horizontal line (H line) on the paper, showing where the headlights should strike.
(5) Draw a vertical line (V line) at the position where the extended center line of the vehicle strikes.
(6) Draw 2 vertical lines (by connecting the low and high beam center marks) to where the both head-
lights should strike (V RH and V LH lines).
(7) Draw a horizontal line (by connecting the both low beam center marks) at the position where the
headlights should strike (H RH and H LH lines).
HINT:
The H RH and H LH line is 0.4° below the horizontal line (H line) of the light axis.
(8) Start the engine.
(9) Turn the headlights ON.
(10) Check that the headlights properly strike the position shown in the illustration.
(11) If not, adjust the lights in the vertical or horizontal direction.
HINT:
As shown in the illustration, adjust each aim of the RH and LH lights.
(c) When adjusting it in the vertical direction:
Using adjusting bolt, adjust the headlight aim to within the specified range.

BE2MR±01
N06031
± BODY ELECTRICALCOMBINATION METER
BE±55
3459 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT SPEEDOMETER ON±VEHICLE
Using a speedometer tester, inspect the speedometer for allow-
able indication error and check odometer operation.
HINT:
Tire wear and tire over or under inflation will increase the indica-
tion error.
USA (mph)CANADA (km/h)
Standard indication Allowable rangeStandard indication Allowable range
20 19 ± 2220 17.5 ± 21.5
40 39 ± 42.540 38 ± 42
60 59.5 ± 63.560 58 ± 63
80 79.5 ± 8480 78 ± 84
100 100 ± 105100 98.5 ± 104.5
±120 119 ± 125
±140 139 ± 145
±160 159 ± 167
If error is excessive, replace the speedometer.
2. INSPECT TACHOMETER
(a) Connect a tune±up test tachometer, and start the engine.
NOTICE:

Reversing the connection of the tachometer will dam-
age the transistors and diodes inside.

When removing or installing the tachometer, be care-
ful not to drop or subject it to heavy shocks.
(b) Compare the tester and tachometer indications.
DC 13.5 V 20°C at (68°F)
Standard indicationAllowable range
700630 ± 770
1,000900 ± 1,100
2,0001,850 ± 2,150
3,0002,800 ± 3,200
4,0003,800 ± 4,200
5,0004,800 ± 5,200
6,0005,750 ± 6,250
If error is excessive, replace the tachometer.
3. INSPECT FUEL RECEIVER GAUGE OPERATION
(a) Disconnect the connector from the sender gauge.
(b) Turn the ignition switch ON and check that the receiver
gauge needle indicates EMPTY.

I21530
Ignition
Switch
Battery(Wire Harness Side)(3.4W) Fuel Gauge
Z05730
Warning Light
Ignition
Switch
Battery
1
23
45
Wire
Harness Side:
I28772
I01278
BE±56
± BODY ELECTRICALCOMBINATION METER
3460 Author: Date:
2005 SEQUOIA (RM1146U)
(c) Connect terminals 2 and 3 on the wire harness side con-
nector through a 3.4 watts test bulb.
(d) Turn the ignition switch ON, check that the bulb comes on
and the receiver gauge needle moves towards the full
side.
HINT:
Because of silicon oil in the gauge, it will take a short time for
the needle to stabilize.
If operation is not as specified, inspect the receiver gauge resis-
tance.
4. INSPECT FUEL LEVEL WARNING LIGHT OPERATION
(a) Disconnect the connector from the sender gauge.
(b) Connect terminals 2 and 3 on the wire harness side con-
nector.
(c) Turn the ignition switch ON and check that the warning
light comes on.
If the warning light does not come on, test the bulb or inspect
the wire harness.
5. INSPECT ENGINE COOLANT TEMPERATURE SEND-
ER GAUGE RESISTANCE
(a) Disconnect the engine coolant temperature sender
gauge.
(b) Measure the resistance between terminals 1 and 2 of the
connector according to the value(s) in the table below.
Temperature °C (°F)Resistance (W)
±20 (±4)13,840 to 16,330
20 (68)2,320 to 2,590
80 (176)310 to 326
110 (230)139.9 to 143.5
If resistance value is not as specified, replace the engine cool-
ant sender gauge.
6. INSPECT OIL PRESSURE SENDER OPERATION
(a) Disconnect the connector from the oil pressure sender.
(b) Check that no continuity exists between terminal and
ground with the engine stopped.
(c) Check that continuity exists between terminal and ground
with the engine running.
HINT:
Oil pressure should be over 24.5 kPa (0.25 kgf/cm
2, 3.55 psi).
If operation is not as specified, replace the oil pressure sender.

I01279
Warning Light
Ignition
Switch
Battery
I19428
21OFF
ON
N01212
BE1217
Warning Light
Ignition
Switch
Battery
± BODY ELECTRICALCOMBINATION METER
BE±57
3461 Author: Date:
2005 SEQUOIA (RM1146U)
7. INSPECT BRAKE WARNING LIGHT OPERATION
(a) Disconnect the connector from the brake fluid warning
switch.
(b) Release the parking brake pedal.
(c) Connect the terminals on the harness side of the level
warning switch connector.
(d) Start the engine and check that the warning light comes
on.
If the warning light does not come on, test the bulb or wire har-
ness.
8. INSPECT BRAKE FLUID LEVEL WARNING SWITCH
CONTINUITY
(a) Remove the reservoir tank cap and strainer.
(b) Disconnect the connector.
(c) Check that no continuity exists between the terminals with
the switch OFF (float up).
(d) Use siphon, etc. to drain fluid out of the reservoir tank.
(e) Check that continuity exists between the terminals with
the switch ON (float down).
(f) Pour the fluid back in the reservoir tank.
If continuity is not as specified, replace the switch.
9. INSPECT PARKING BRAKE SWITCH CONTINUITY
(a) Check that continuity exists between the terminal and
switch body with the switch ON (switch pin released).
(b) Check that no continuity exists between the terminal and
switch body with the switch OFF (switch pin pushed in).
If operation is not as specified, replace the switch or inspect
ground point.
10. INSPECT WASHER LEVEL WARNING LIGHT OPERA-
TION
(a) Disconnect the connectors from the combination meter.
(b) Connect the negative (±) lead from the battery to terminal
16.
(c) Turn the ignition switch ON and check that the warning
light comes on.
If the warning light does not come on, test the bulb.

I04146
BE1W8±05
I04148
ON OFF BE±92
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
3496 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT THEFT DETERRENT HORN OPERATION
Connect the positive (+) lead from the battery to terminal 1 and
negative (±) lead to the theft deterrent horn body, and check
that the theft deterrent horn blows.
If operation is not as specified, replace the horn.
2. INSPECT ENGINE HOOD COURTESY SWITCH CON-
TINUITY
Switch positionTester connectionSpecified condition
CLOSE (OFF)±No continuity
OPEN (ON)1 ± 2Continuity
If continuity is not as specified, replace the switch.
3. INSPECT ENGINE HOOD COURTESY SWITCH CIR-
CUIT (See page DI±1725)

Insert the master key in the key cylinder.
Driver's door: Open " Close 7 times Ignition switch: LOCK " ON 6 times
Remove the master key.START
END
*1
*2within
15 secs.
within
20 secs.
All doors closed. No key in the key cylinder.
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
BE±141
3545 Author: Date:
2005 SEQUOIA (RM1146U)
3. ERASURE OF TRANSPONDER KEY CODE
Do this operation to erase transponder key registration from the transponder key computer.
HINT:
Delete all other master and sub±key codes leaving the master key code to use the operation. When using
the key which was used before deletion, it is necessary to register the code again.
*1: Insert the master cylinder into the key cylinder.
Turn the ignition switch to LOCK " ON 6 times within 15 seconds.
*2: Open and close driver's door 7 times and remove the master key within 20 seconds after completion of
the previous operation.
HINT:

When any operation time described above is over, registration mode completes.

When the next procedure is performed while the timer is working, the timer completes counting time,
then the next timer starts.
4. ECU COMMUNICATION ID REGISTRATION
NOTICE:

The ECU communication ID should be registered when the transponder key ECU and/or the
ECM is replaced, in order to match these ECM COMMUNICATION ID.

The engine cannot be started unless the ECM COMMUNICATION ID matches.
(a) Register the ECU communication ID.
(1) After the transponder key ECU and/or the ECM is replaced, turn the ignition switch ON (the en-
gine is not running).
(2) Short the Tc and CG terminals of the DLC3 and leave it as it is for 30 minutes.
(3) Check that the engine starts.

BE2D6±02
I10154
I24870
12
6
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
BE±143
3547 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECTION TRANSPONDER KEY COIL CONTINU-
ITY
Check that there is continuity between terminals 1 and 2.
If continuity is not as specified, replace the coil.
2. INSPECT TRANSPONDER KEY ECU CIRCUIT
Connect the wire harness side connector to the ECU and in-
spect the wire harness side connector from the back side, as
shown in the table below.
ConditionTester connectionSpecified condition
Always6 ± 12Battery positive voltage
If the circuit is as specified, replace the ECU with a new one.
If the circuit is not as specified, inspect the circuit connected to
other parts.

BO0139
Rear End
Front EndBO46O±01
± BODYSLIDING ROOF
BO±77
3630 Author: Date:
2005 SEQUOIA (RM1146U)
SLIDING ROOF
ON±VEHICLE INSPECTION
INSPECT SLIDING ROOF GLASS ALIGNMENT
(a) Start the engine and check the operation time of the slid-
ing roof.
Operation time:
Approx. 6 secs.
(b) Check for abnormal noise or binding during operation.
(c) With the sliding roof fully closed, check for water leakage.
(d) Check for a difference in level between the sliding roof
weatherstrip and roof panel.
Front end:
0 - 2.0 mm (0 ± 0.079 in.)
0 + 1.0 mm (0 + 0.039 in.)
Side end:
0 ± 1.5 mm (0 ± 0.059 in.)
Rear end:
0 ± 1.0 mm (0 ± 0.039 in.)
0 + 2.0 mm (0 + 0.079 in.)

I21357
Sight Glass
AC1JT±06
± AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC±3
3730 Author: Date:
2005 SEQUOIA (RM1146U)
ON±VEHICLE INSPECTION
1. INSPECT REFRIGERANT VOLUME
Observe the sight glass on the liquid tube.
Test conditions:

Running engine at 1,500 rpm

Single A/C:
Front blower speed control dial at ºHIº position

Dual A/C:
Front and rear blower speed set at ºHIº position

A/C switch ON

Single A/C:
Front temperature control dial at ºMAX. COOLº position

Dual A/C:
Front temperature control dial at ºMAX. COOLº position
Rear temperature control set at 18.5°C (65°F)

Fully open the doors
ItemSymptomAmount of refrigerantRemedy
1Bubbles are present in sight glass continu-
ouslyInsufficient*
(1) Check for gas leakage with gas leak de-
tector and repair if necessary
(2) Add refrigerant until bubbles disappear
2No bubbles are present in sight glassNone, sufficient or too muchRefer to items 3 and 4
3No temperature difference between com-
pressor inlet and outletEmpty or nearly empty
(1) Check for gas leakage with gas leak de-
tector and repair if necessary
(2) Add refrigerant until bubbles disappear
4Temperature between compressor inlet and
outlet is noticeably differentCorrect or too muchRefer to items 5 and 6
5Immediately after air conditioning is turned
off, refrigerant in sight glass stays clearToo much
(1) Discharge refrigerant
(2) Evacuate air and charge proper amount
of purified refrigerant
6When air conditioning is turned off, refriger-
ant foams and then stays clearCorrect±
*: Bubbles in the sight glass with ambient temperature higher than usual can be considered normal if cooling
is sufficient.

I21803
Single A/C:
Dual A/C: AC±4
± AIR CONDITIONINGAIR CONDITIONING SYSTEM
3731 Author: Date:
2005 SEQUOIA (RM1146U)
2. INSPECT REFRIGERANT PRESSURE WITH MAN-
IFOLD GAUGE SET
This is a method for checking the A/C system by using a man-
ifold gauge set. Read the manifold gauge pressure when the
conditions below are met.
Test conditions:

Temperature at the air inlet with R/F switch set at RECIRC
is 30 to 35°C (86 to 95°F)

Engine running at 1500 rpm

Blower speed control switch at ºHIº position

Temperature control dial at ºMAX. COOLº position

Dual A/C:
Rear temperature control set at 18.5°C (65°F)
HINT:
Gauge indications may vary slightly due to ambient tempera-
ture conditions.
(1) Normally functioning refrigeration system.
Gauge reading:
Single A/C:
GaugeMPakgf´cm2
Low pressure0.15 to 0.251.5 to 2.5
High pressure1.6 to 1.816 to 18
Dual A/C:
GaugeMPakgf´cm2
Low pressure0.25 to 0.352.5 to 3.5
High pressure1.9 to 2.119 to 21