Page 3425 of 4323
± BODY ELECTRICALTROUBLESHOOTING
BE±13
3417 Author: Date:
2005 SEQUOIA (RM1146U)
BACK DOOR POWER WINDOW CONTROL SYSTEM
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.
SymptomSuspect AreaSee page
Back door power window does not operate.
1. Back Door Power Window Motor Circuit
2. Window Pulse Sensor Circuit
3. Rear Wiper Motor Circuit
4. Back Door Control Light Switch Circuit
5. Back Door ECU
6. Body ECUIN±35
DI±1877
DI±1880
DI±1864
±
±
TRAILER TOWING
SymptomSuspect AreaSee page
Trailer towing does not operate.
1. TOWING Fuse
2. TOWING TAIL Fuse
3. TOWING BRK Fuse
4. TOWING TAIL Relay
5. BATT CHARGE Relay
6. Towing Converter Relay
7. Brake Controller
8. Wire HarnessBE±14
BE±14
BE±14
BE±148
BE±148
BE±148
BE±148
±
Page 3426 of 4323
BE2DG±03
I28397
Engine Room R/B No. 2
Engine Room J/B
FL Block
Instrument Panel J/B
Driver Side R/BEngine Room R/B No. 3 FL Block:
A
B
B
A
B
Engine Room R/B
No. 4
NOTICE:
When removing the FL block, pinch ºAº using pliers and pull it out.
Since ºBº is easy to damage, do not pinch with pliers. BE±14
± BODY ELECTRICALPOWER SOURCE
3418 Author: Date:
2005 SEQUOIA (RM1146U)
POWER SOURCE
LOCATION
Page 3427 of 4323
I28398
Fuses:Relays:
1. *1 H±LP LL
2. *1 H±LP RL
3. STA
4. *1 H±LP LH
5. *1 H±LP RH
A
G
FED
BC
6
1034
5
A. AIR SUS Relay
B. CDS FAN Relay
C. MG CLT Relay
D. A/F Relay
E. *1 DRL No. 4 Relay
F. DIMMER Relay
G. ST Relay
*1 w/ Daytime Running Light Engine Room R/B No. 2
7
8
911
12
6. AIR SUS No. 2
7. RSE
8. A/F
9. SECURITY
10. DEF I/UP
11. ±
12. ±12
10 A
10 A
7.5 A
10 A
10 A
10 A
7.5 A
20 A
15 A
7.5 A
± BODY ELECTRICALPOWER SOURCE
BE±15
3419 Author: Date:
2005 SEQUOIA (RM1146U)
Page 3428 of 4323
I18638
A. Taillight Relay Instrument Panel J/B:
Relays:
B. Back±Up Light Relay
C. ACC Relay
D. Power Main Relay
E. Fog Light Relay
F. MIRROR HEATER Relay
G. FLASHER Relay
H. SEAT HEATER Relay
Fuses:
1. TAIL Fuse
2. PWR No. 4 Fuse
3. PANEL Fuse
4. ECU±IG Fuse
123
4567
89
1011
12
1314
A
BC
DE
GH
F
15
1617 18 19
20
21 22 23
2425
265. CIG Fuse
6. PWR No. 1 Fuse
7. HTR Fuse
8. WSH Fuse
9. RAD No. 2 Fuse
10. WIP Fuse
11. FOG Fuse
12. AC INV Fuse 15 A
13. 4WD Fuse14. IGN1 Fuse
15. GAUGE Fuse
16. IGN 2 Fuse
17. STOP Fuse
18. SUN ROOF Fuse
19. PWR OUTLET Fuse
20. PWR No. 3 Fuse
21. OBD Fuse
22. PWR No. 2 Fuse
23. SEAT HTR Fuse
24. PWR SEAT Fuse
25. AM1 Fuse
26. PWR No. 5 Fuse 15 A 10 A
20 A
7.5 A
10 A
15 A
25 A
10 A
25 A
7.5 A
25 A
15 A
20 A15 A
20 A
15 A
25 A
15 A
20 A
7.5 A
25 A
15 A
30 A
40 A
30 A BE±16
± BODY ELECTRICALPOWER SOURCE
3420 Author: Date:
2005 SEQUOIA (RM1146U)
Page 3429 of 4323

I28399
Fusible Link Block:
Relays: Fuses:
5. RR HEATER Fuse 30 A
A. C/OPN Relay
B. HEAD Relay
C. EFI Relay
D. FUEL PUMP Relay
E. DEFOG Relay
F. HORN Relay
Engine Room J/B6. R/B Fuse 30 A
7. A/PUMP Fuse 50 A
8. ABS Fuse 60 A
9. ALT Fuse 140 A
10. CDS FAN Fuse 25 A
11. Spare Fuse 15 A
12. Spare Fuse 20 A
13. Spare Fuse 30 A
14. Main Fuse 40 A
15. DOOR No. 2 Fuse 30 A
16. *2 H±LP RH Fuse 15 A
17. EFI No. 1 Fuse 20 A
18. ETCS Fuse 10 A19. *1.DRL Fuse 15 A
*2.H±LP LH Fuse 15 A
20. ALT±S Fuse 7.5 A
21. TOWING Fuse 30 A
22. ST Fuse 30 A
23. RAD No. 3 Fuse 30 A
24. TURN±HAZ Fuse 20 A
25. AM2 Fuse 25 A
26. EFI No. 2 Fuse 10 A
27. SHORT±PIN
28. HORN Fuse 10 A
29. MIR HTR Fuse 15 A
30. ECU±B Fuse 7.5 A
31. DOME Fuse 10 A
32. RAD No. 1 Fuse 20 A
*1 w/ Daytime Running Light
*2 w/o Daytime Running Light 15
16 17 18
19 20 21
262728
2930
A
B
C
D
EF 1
234
5
6789
10
22 2324 25
31
32
11
12
13141. TOWING R/B Fuse 50 A
2. AIR SUS Fuse 50 A
3. HEATER Fuse 50 A
4. DEFOG Fuse 40 A
± BODY ELECTRICALPOWER SOURCE
BE±17
3421 Author: Date:
2005 SEQUOIA (RM1146U)
Page 3430 of 4323
I28550
Engine Room R/B No. 3:
Relays: Fuses:
1. TOWING BRK Fuse 30 A
A. BATT CHARGE Relay
B. TOWING TAIL Relay 2. BATT CHARGE Fuse 30 A
3. TOWING TAIL Fuse 30 A
Driver Side R/B:
Relays:
A. INVERTER Relay
B. SEAT HEATER RelayEngine Room R/B No. 4:
Relays:
A. RR HEATER Relay
B. HEATER Relay BE±18
± BODY ELECTRICALPOWER SOURCE
3422 Author: Date:
2005 SEQUOIA (RM1146U)
Page 3431 of 4323
BE2DE±03
I28400
Power Outlet (12 V)
Power Outlet
(115 V) (*1)
(12 V) (*2) Ignition Switch
Main Switch
Instrument Panel J/B
IPO (Intelligent Power Outlet)
AC INV Fuse
Driver Side R/B
INVERTER Relay
PWR OUTLET Fuse
Power Outlet (12 V)
*1: w/ Rear Seat Entertainment System
w/ Rear Seat Audio System
*2: w/o Rear Seat Entertainment System
w/o Rear Seat Audio System
Voltage Inverter
(Located inside of the
quarter trim panel LH)
Cigarette Lighter
± BODY ELECTRICALPOWER OUTLET
BE±19
3423 Author: Date:
2005 SEQUOIA (RM1146U)
POWER OUTLET
LOCATION
Page 3432 of 4323

BE2MU±01
I27713
I27712
I05027
3
15
2 52
3
1
I24374
Wire Harness Side: BE±20
± BODY ELECTRICALPOWER OUTLET
3424 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT MAIN SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
ON3 ± 5Continuity
OFF3 ± 5No continuity
Constant4 ± 5Continuity
Illumination circuit1 ± 2Continuity
If continuity is not as specified, replace the switch.
2. INSPECT MAIN INDICATOR LIGHT OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2.
(b) Push the main switch and check that the indicator light
comes on.
If operation is not as specified, replace the switch.
3. INSPECT INVERTER RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant1 ± 2Continuity
Constant3 ± 5No continuity
Apply B+ between
terminals 1 and 23 ± 5Continuity
If continuity is not as specified, replace the relay.
4. INSPECT VOLTAGE INVERTER CIRCUIT
Disconnect the connector from the voltage inverter and inspect
the connector on the wire harness side as shown in the table
below.
Switch positionTester connectionSpecified condition
ON1 ± 4Battery positive voltage
OFF1 ± 4No voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.