Page 1838 of 4323
I28559
E5 C5 ECU
TACHCombination Meter
23 J/C
J14D
J15F
Y±G Y±G 1 DI±1636
± DIAGNOSTICSCOMBINATION METER SYSTEM
1830 Author: Date:
2005 SEQUOIA (RM1146U)
Malfunction in tachometer
CIRCUIT DESCRIPTION
The indication on the tachometer is based on information that the ECM receives from the crankshaft position
sensor.
WIRING DIAGRAM
DID90±01
Page 1842 of 4323
I28560
F19
Fuel SenderCombination Meter
C6 C5
12 26
11
C6 BB1
J8
J/C
IEJ49 J48
BB1
1F 1D96
BR W±B Y±B Y±B Y±BVV V
1 4
2 3AG J/C
A G
AJ49 J48 DI±1640
± DIAGNOSTICSCOMBINATION METER SYSTEM
1834 Author: Date:
2005 SEQUOIA (RM1146U)
Malfunction in fuel receiver gauge
CIRCUIT DESCRIPTION
The fuel sender has a variable resistance mechanism. The resistance decreases when the fuel amount in-
creases, and the resistance increases when the fuel amount decreases.
The fuel receiver gauge changes based on the resistance of the fuel sender.
WIRING DIAGRAM
DID91±01
Page 1848 of 4323
I28561
R6
Rheostat
To Each
Illumination Parts
To Each
Illumination Parts
Instrument Panel J/B
Combination Meter
I18
Ignition SW J8
J/C
Sub J/B No. 3
F10
Fusible Link Block
Engine Room J/B
Battery
IET
ILL±
E
TR
IG C5
C612 22
24
C6
Illumination 1F
1J 1C1D 1H
1C
1C8
2
11 9
34 13
6
IGN1
AM11H 1E
1C4
1 1F
1L 6
7 56
12
2DECU±IG
2188
3A 3E
8
4
51 3 4
5 6
ALT
AM2 IG2
AM2 11
2C A
A
AM1 IG1
G
W±G
W±B
BR W±G
W±G
W±BW±G
B±R
B±YB±O
B±R
W
W±L
W±RB±R
BW±RB DI±1646
± DIAGNOSTICSCOMBINATION METER SYSTEM
1840 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM
Page 1852 of 4323
I28562
Combination Meter
Instrument Panel J/B
Engine Room J/B I18
Ignition SW Front Seat
Inner Belt
(Buckle
SW LH)
*1: w/ Power Seat
*2: w/o Power Seat Battery
BH IEJ8
J/C
F10
FLB BI2J24
J/C
4
5
BB B
B
AC5
C6
12 24
C64
Seat
BeltBuzzer
2D2C 11
AM2 1F 1C
1D1H
1C
1J 211
9 3
7
6 IGN1
56
AM2 IG2
W±BB±O
BR
W±R W±B
(*1)(*2)
W±B
(*1) W±B
(*1)(*1) (*2) (*1)(*1) (*1) G±Y G±YG±Y
(*2)
1 33 213
B16 B16 B16 B16
W±RG±Y
B±R W±RBI2 IN1
313
W±B
(*2)
DI±1650
± DIAGNOSTICSCOMBINATION METER SYSTEM
1844 Author: Date:
2005 SEQUOIA (RM1146U)
Seat belt warning for driver's seat does not operate
CIRCUIT DESCRIPTION
A buzzer and indicator are included in the seat belt warning system. When the ignition switch is ON and the
seat belt on the driver side is not fastened, both the buzzer and indicator operate.
The buzzer and indicator are built into the combination meter.
WIRING DIAGRAM
DID94±01
Page 1856 of 4323
I28563
O2
Oil Pressure SenderCombination Meter
Heat Wire
IG4C5
1L±B1627
L±B DI±1654
± DIAGNOSTICSCOMBINATION METER SYSTEM
1848 Author: Date:
2005 SEQUOIA (RM1146U)
Malfunction in oil pressure receiver gauge
CIRCUIT DESCRIPTION
The oil pressure sender detects the oil pressure generated by engine start.
The combination meter determines that the engine is on when the engine revolution is 400 rpm or more, and
determines that the engine is off when the engine revolution is 200 rpm or less.
The oil pressure receiver gauge detects and indicates the oil pressure applied to the oil pressure sender.
WIRING DIAGRAM
DID95±01
Page 1860 of 4323
I28564
I18
Ignition SWInstrument Panel J/BCombination Meter
Engine Room J/B F10
Fusible LB
BatteryIGN1
AM2
AM2 IG2
2D 2C11 1C 1H
1C1J 2
11
37 56B±R B±O
W±R
BB
4 5C624
W±R DI±1658
± DIAGNOSTICSCOMBINATION METER SYSTEM
1852 Author: Date:
2005 SEQUOIA (RM1146U)
Malfunction in volt meter
CIRCUIT DESCRIPTION
The voltmeter indicates the voltage applied to the IG terminal of the combination meter.
WIRING DIAGRAM
DID96±01
Page 1870 of 4323
DI277±14
I18700
J8
J/CB±R
2
L±WIG Instrument Panel J/B I18
Ignition SW
1IG1
AM1 B±Y4
1C
6
1CAM1
1 2ECU±IG
SUN ROOF1
1M
5
1M
1
1L8
5
B
W±L
B58 ALT F10
Fusible Link Block
W
Instrument Panel J/B
W±BW±B 7
1M 10
1F
IE Battery7
AS19
Sliding Roof
Control ECU
E DI±1668
± DIAGNOSTICSSLIDING ROOF SYSTEM
1862 Author: Date:
2005 SEQUOIA (RM1146U)
CIRCUIT INSPECTION
Power Source Circuit
CIRCUIT DESCRIPTION
This circuit provides power to operate the sliding roof control ECU.
WIRING DIAGRAM
Page 1873 of 4323
I18701
4
3
10
9 W±BS19
Sliding Roof
Control ECU
UP
DWN
CLS
OPN J8
J/CO59
O5 10
O512
O511 UP
DWN
CLS
OPN E O51
W±B1M7
1F10
IEAInstrument Panel J/BOverhead Module
R±Y
R±W
G±Y
P±B
± DIAGNOSTICSSLIDING ROOF SYSTEM
DI±1671
1865 Author: Date:
2005 SEQUOIA (RM1146U)
Sliding Roof Control Switch Circuit
CIRCUIT DESCRIPTION
The sliding roof control switch is built into the overhead module.
WIRING DIAGRAM
DI94F±05