2001 TOYOTA SEQUOIA bulb

I28730
32
N08313
2
N08314
1
2
N20159
ON
OFFOhmmeter
I04056
± BODY ELECTRICALINTERIOR LIGHT SYSTEM
BE±41
3445 Author: Date:
2005 SEQUOIA (RM1146U)
(c) Turn the light switch to DOOR, check that continuity exists
between terminals 2 and 3.
If continuity is not as specified, replace the light assembly or
bulb.
5. INSPECT LUGGAGE ROOM LIGHT SWITCH CONTI-
NUITY
(a) Disconnect the connector from the interior light assembly.
(b) Turn the interior light switch ON, check that continuity ex-
ists between terminal 2 and body ground.
If continuity is not as specified, replace the light assembly or
bulb.
(c) Turn the interior light switch to DOOR, check that continu-
ity exists between terminals 1 and 2.
If continuity is not as specified, replace the light assembly or
bulb.
6. INSPECT DOOR COURTESY LIGHT SWITCH CONTI-
NUITY
(a) Check that continuity exists between terminals and the
switch body with the switch ON (switch pin released:
opened door).
(b) Check that no continuity exists between terminals and the
switch body with the switch OFF (switch pin pushed in:
closed door).
If continuity is not as specified, replace the switch.
7. INSPECT DOOR COURTESY LIGHT CONTINUITY
Check that continuity exists between terminals.
If continuity is not as specified, replace the light assembly or
bulb.

I18562
I18561
BE±42
± BODY ELECTRICALINTERIOR LIGHT SYSTEM
3446 Author: Date:
2005 SEQUOIA (RM1146U)
8. INSPECT VANITY LIGHT CONTINUITY
Switch positionTester connectionSpecified condition
OFF (Closed)1 ± 2No continuity
ON (Opened)1 ± 2Continuity
If continuity is not as specified, replace the bulb or vanity light.
9. INSPECT BACK DOOR COURTESY LIGHT SWITCH
CONTINUITY
Switch positionTester connectionSpecified condition
OFF (Closed)1 ± 2No continuity
ON (Opened)1 ± 2Continuity
If continuity is not as specified, replace the switch.

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.

N07797
OFF
ON
BE0044
Warning Light
Ignition
Switch
Battery
I28507
4
10
BE±58
± BODY ELECTRICALCOMBINATION METER
3462 Author: Date:
2005 SEQUOIA (RM1146U)
11. INSPECT WASHER LEVEL SWITCH CONTINUITY
(a) Check that there is no continuity between terminals with
the switch OFF (float up).
(b) Check that there is continuity between terminals with the
switch ON (float down).
If operation is not as specified, replace the jar & pump assem-
bly.
12. INSPECT BUCKLE SWITCH CONTINUITY
(See page DI±1126)
13. INSPECT OPEN DOOR WARNING LIGHT OPERATION
(a) Disconnect the connector from the door courtesy switch
and ground terminal on the wire harness side connector.
(b) Check that the warning light comes on.
If the warning light does not come on, test the bulb.
14. INSPECT PASSENGER SEAT BELT WARNING LIGHT
(a) Remove the center cluster finish panel.
(b) Disconnect the connectors from the center cluster in-
tegration.
(c) Connect the positive (+) lead from the battery to terminal
4 and the negative (±) lead to terminal 10, and check that
the warning light comes on.
If the warning light does not come on, inspect the bulb or wire
harness (See page DI±1126).

AC3HQ±02
I21379
I22616
1 2
4
I17711
3
4 AC±84
± AIR CONDITIONINGPOWER TRANSISTOR (for Rear A/C)
3811 Author: Date:
2005 SEQUOIA (RM1146U)
POWER TRANSISTOR (for Rear
A/C)
INSPECTION
1. REMOVE REAR SEAT OUTER BELT FLOOR AN-
CHORS
2. REMOVE BACK DOOR SCUFF PLATE
3. REMOVE REAR DOOR SCUFF PLATE RH
4. REMOVE REAR WINDOW SIDE GARNISH
5. REMOVE REAR QUARTER TRIM PANEL RH
6. REMOVE REAR POWER TRANSISTOR
(a) Disconnect the connector.
(b) Remove the 2 screws and the rear power transistor.
7. INSPECT POWER TRANSISTOR OPERATION
(a) Connect the positive (+) lead to terminal 1 through a
12 V ± 3.4 W test bulb and the negative (±) lead to
terminal 4.
(b) Check the test bulb lights up when another positive (+)
lead is connected to terminal 2 through a 12 V ± 3.4 W test
bulb.
If operation is not as specified, replace the power transistor.
8. INSPECT POWER TRANSISTOR RESISTANCE
Measure the resistance between terminals 3 and 4.
Standard resistance: 2.0 to 2.4 kW
If resistance is not as specified, replace the power transistor.
9. INSTALL REAR POWER TRANSISTOR
10. INSTALL REAR QUARTER TRIM PANEL RH
11. INSTALL REAR WINDOW SIDE GARNISH
12. INSTALL REAR DOOR SCUFF PLATE RH
13. INSTALL BACK DOOR SCUFF PLATE

AC3I1±03
I21397
Center Cluster
Integration Panel
Heater
Control
Housing
A/C Amplifier
Seat Belt Indicator Circuit
BulbBulb
Bulb
Knob
Knob
Knob
Integration Panel
Knob
AC±102± AIR CONDITIONINGAIR CONDITIONER CONTROL ASSEMBLY (Center
Cluster Integration)
3829 Author: Date:
2005 SEQUOIA (RM1146U)
AIR CONDITIONER CONTROL ASSEMBLY (Center Cluster
Integration)
COMPONENTS

I21399
AC3HX±03
I21400
I21401
I21402
I21417
AC±104± AIR CONDITIONINGAIR CONDITIONER CONTROL ASSEMBLY (Center
Cluster Integration)
3831 Author: Date:
2005 SEQUOIA (RM1146U)
DISASSEMBLY
1. REMOVE BULBS
Remove the 3 bulbs.
2. REMOVE A/C AMPLIFIER
(a) Remove the 7 screws and heater control housing.
(b) Disconnect the 2 connectors.
(c) Remove the 3 screws and A/C amplifier.
(d) Remove the passenger seat belt indicator circuit.
3. REMOVE INTEGRATION CIRCUIT
(a) Remove the 2 knobs.
(b) Remove the 2 nuts and 2 washers.