2001 TOYOTA SEQUOIA Service Repair Manual

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Page 2985 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual TR09T±04
F19317
2WD/4HI Switch
F19318
Differential Lock Switch
± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
TR±39
2977 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
NOTICE:
4HI e 4LO: Stop the v

Page 2986 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual F19319
2WD/4HI Switch
F19320
4LO Switch
F19321
Differential Lock Switch
TR±40
± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
2978 Author: Date:
2005 SEQUOIA (RM1146U)
(f) Push the 2WD/4HI switch once

Page 2987 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual F19322
4LO Switch
F19323
4LO Switch
± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
TR±41
2979 Author: Date:
2005 SEQUOIA (RM1146U)
6. INSPECT 4HI (4WD and differential lock ºFREEº) e
4LO (4WD and di

Page 2988 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual F19324
2WD/4HI Switch
F19325
A GND
4LO
CPU 4WD
B TR±42
± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
2980 Author: Date:
2005 SEQUOIA (RM1146U)
8. INSPECT 4LO (4WD and differential lock ºLOCKº) "
2W

Page 2989 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual F19340
A
B Four Wheel Drive Control ECU:
Transfer Actuator:
± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
TR±43
2981 Author: Date:
2005 SEQUOIA (RM1146U)
10. INSPECT ACTUATOR
NOTICE:
Inspect the actu

Page 2990 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual F19566
TR±44
± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
2982 Author: Date:
2005 SEQUOIA (RM1146U)
12. INSPECT FOUR WHEEL DRIVE CONTROL ECU
(a) Connect the wire harness side connector to the four

F19566
TR±44
± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
2982 Author: Date:
2005 SEQUOIA (RM1146U)
12. INSPECT FOUR WHEEL DRIVE CONTROL ECU
(a) Connect the wire harness side connector to the four wheel drive control ECU and inspect the wire har-
ness side connector from the back, as shown.
STANDARD VALUE OF ECU TERMINAL
Terminals (Symbols)ConditionSTD Voltage (V)
3 (HM1) ± 4 (HM2)
Ignition switch ON
Four wheel drive control switch ºH4º position " Four wheel drive control switch
ºL4º position
10 to 14 " 2 or less
or
4 (HM2) ± 3 (HM1)
Ignition switch ON
Four wheel drive control switch ºL4º position " Four wheel drive control switch
ºH4º position
or
0 (0.5 s) to 14 (50 ms)
pulse generation
2 (TM1) ± 1 (TM2)
Ignition switch ON
Differential lock switch is in ºOFFº position
Four wheel drive control switch ºH2º position " Four wheel drive control switch
ºH4º position
10 to 14 " 2 or less
or
1 (TM2) ± 2 (TM1)
Ignition switch ON
Keep pressing the differential lock switch for approx. 2 seconds to turn it ON
Four wheel drive control switch ºH4ºor ºL4º position " Four wheel drive control
switch ºH2º position
or
0 (0.5 s) to 14 (50 ms)
pulse generation
5 (DM1) ± 6 (DM2)Ignition switch ON
A.D.D. FREE "A.D.D. LOCK10 to 14 " 2 or less
or
6 (DM2) ± 5 (DM2)Ignition switch ON
A.D.D. LOCK "A.D.D. FREE
or
0 (0.5 s) to 14 (50 ms)
pulse generation
4 (HM2) ± 7 (GND)
Ignition switch ON
Four wheel drive control switch ºH4º position " Four wheel drive control switch
ºL4º position
2 or less " 10 to 14
7 (GND) ± Body groundIgnition switch OFFContinuity
12 (IG) ± 7 (GND)Ignition switch ON10 to 14
18 (DL2) ± 7 (GND)Ignition switch ON
A.D.D. LOCK "A.D.D. FREE0.88 or less " 10 to 14
19 (DL1) ± 7 (GND)Ignition switch ON
A.D.D. FREE "A.D.D. LOCK0.88 or less " 10 to 14
23 (HL1) ± 7 (GND)
Ignition switch ON
Four wheel drive control switch ºH4º position " Four wheel drive control switch
ºL4º position
10 to 14 " 1.5 or less
25 (2±4) ± 7 (GND)
Ignition switch ON
Four wheel drive control switch ºL4º position " Four wheel drive control switch
ºH2º or ºH4º position
10 to 14 " 1.5 or less
26 (SPD) ± 7 (GND)During drivingPulse generation

Page 2991 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual ± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
TR±45
2983 Author: Date:
2005 SEQUOIA (RM1146U)28 (IND3) ± 7 (GND)
Ignition switch ON
Four wheel drive control switch ºH2º position " Four wheel dri

± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
TR±45
2983 Author: Date:
2005 SEQUOIA (RM1146U)28 (IND3) ± 7 (GND)
Ignition switch ON
Four wheel drive control switch ºH2º position " Four wheel drive control switch
ºL4º position
10 to 14 " 0 to 3.5
32 (LO) ± 7 (GND)
Ignition switch ON
Four wheel drive control switch ºH2º position " Four wheel drive control switch
ºL4º position
10 to 14 " 1.5 or less
33 (DL) ± 7 (GND)
Ignition switch ON
Differential lock switch is in ºOFFº position " Keep pressing the differential lock
switch for approx. 2 seconds to turn it ON
10 to 14 " 1.5 or less
9 (ADD) ± 7 (GND)Ignition switch ON
A.D.D. FREE "A.D.D. LOCK10 to 14 " 1.5 or less
39 (TL3) ± 7 (GND)
Ignition switch ON
Four wheel drive control switch ºH2º position " Four wheel drive control switch
ºL4º position
Differential lock switch is in ºOFFº position " Keep pressing the differential lock
switch for approx. 2 seconds to turn it ON
1.5 or less " 10 to 14
40 (TL2) ± 7 (GND)
Ignition switch ON
Four wheel drive control switch ºH2º position " Four wheel drive control switch
ºH4º position
Differential lock switch is in ºOFFº position " Keep pressing the differential lock
switch for approx. 2 seconds to turn it ON
10 to 14 " 1.5 or less
41 (TL1) ± 7 (GND)
Ignition switch ON
Four wheel drive control switch ºH2º position " Four wheel drive control switch
ºH4º or ºL4º position
Differential lock switch is in ºOFFº position " ºONº position
1.5 or less " 10 to 14
42 (HL2) ± 7 (GND)
Ignition switch ON
Four wheel drive control switch ºH4º position " Four wheel drive control switch
ºL4º position
1.5 or less " 10 to 14
45 (IND1) ± 7 (GND)
Ignition switch ON
Four wheel drive control switch ºH2º position " Four wheel drive control switch
ºH4º or ºL4º position
10 to 14 " 0 to 3.5
46 (IND2) ± 7 (GND)
Ignition switch ON
Differential lock switch is in ºOFFº position " Keep pressing the differential lock
switch for approx. 2 seconds to turn it ON
10 to 14 " 0 to 3.5
48 (N) ± 7 (GND)Ignition switch ON
Transmission shift lever: positions other than N" N1.5 or less " 10 to 14
50 (L4) ± 7 (GND)
Ignition switch ON
Four wheel drive control switch ºH4º position " Four wheel drive control switch
ºL4º position
10 to 14 " 2 or less
10 (P1) ± 7 (GND)
Ignition switch ON
Four wheel drive control switch ºH2º position " Four wheel drive control switch
ºH4º or ºL4º position
Differential lock switch is in ºOFFº position " ºONº position
10 to 14 " 1.5 or less

Page 2992 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual PR01F±04
± PROPELLER SHAFTTROUBLESHOOTING
PR±1
2984 Author: Date:
2005 SEQUOIA (RM1146U)
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. Th

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