TOYOTA SEQUOIA 2001 Service Repair Manual

I28513
8
9
I18582
Retract
PositionDrive
Position
(a)
(b)
(c)
I24381
Connector Front View:
I18582
Retract
PositionDrive
Position
(a)
(b)
(c)
± BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
BE±119
3523 Author: Date:
2005 SEQUOIA (RM1146U)
(d) Reverse the polarity and check that the mirror turns right-
ward.
7. w/o Driving Position Memory:
INSPECT ELECTRICAL RETRACT MOTOR OPERA-
TION
(a) Driving position:
(1) Connect the positive (+) lead from the battery to ter-
minal 1 and the negative (±) lead to terminal 2.
Check that the mirror moves to the retract position.
(2) Reverse the polarity and check that the mirror does
not operate.
If operation is not as specified, replace the mirror assembly.
(b) Between driving position and retract position:
(1) Connect the positive (+) lead from the battery to ter-
minal 1 and the negative (±) lead to terminal 2.
Check that the mirror moves to the retract position.
(2) Reverse the polarity and check that the mirror
moves to the return position (Stops at the driving
position).
If operation is not as specified, replace the mirror assembly.
(c) Retract position:
(1) Connect the positive (+) lead from the battery to ter-
minal 1 and the negative (±) lead to terminal 2.
Check that the mirror does not operate.
(2) Reverse the polarity and check that the mirror
moves to the return position (Stops at the driving
position).
If operation is not as specified, replace the mirror assembly.
8. w/ Driving Position Memory:
INSPECT ELECTRICAL RETRACT MOTOR OPERA-
TION
(a) Driving position:
(1) Connect the positive (+) lead from the battery to ter-
minal 13 and the negative (±) lead to terminal 14.
Check that the mirror moves to the retract position.
(2) Reverse the polarity and check that the mirror does
not operate.
If operation is not as specified, replace the mirror assembly.

I28520
Connector Front View: BE±120
± BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
3524 Author: Date:
2005 SEQUOIA (RM1146U)
(b) Between driving position and retract position:
(1) Connect the positive (+) lead from the battery to ter-
minal 13 and the negative (±) lead to terminal 14.
Check that the mirror moves to the retract position.
(2) Reverse the polarity and check that the mirror
moves to the return position (Stops at the driving
position).
If operation is not as specified, replace the mirror assembly.
(c) Retract position:
(1) Connect the positive (+) lead from the battery to ter-
minal 13 and the negative (±) lead to terminal 14.
Check that the mirror does not operate.
(2) Reverse the polarity and check that the mirror
moves to the return position (Stops at the driving
position).
If operation is not as specified, replace the mirror assembly.

BE2D8±03
I28420
Electro Chromic Inner Mirror
Instrument Panel J/B

ECU±IG Fuse
± BODY ELECTRICALELECTRO CHROMIC MIRROR SYSTEM
BE±121
3525 Author: Date:
2005 SEQUOIA (RM1146U)
ELECTRO CHROMIC MIRROR SYSTEM
LOCATION

BE2D9±02
I24349
A
76
BE±122
± BODY ELECTRICALELECTRO CHROMIC MIRROR SYSTEM
3526 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
INSPECT ELECTRO CHROMIC INNER MIRROR OPERA-
TION
(a) Cover the sensor A so that the sensor does not receive
any light.
(b) Connect the positive (+) lead the battery to terminal 7 and
the negative (±) lead to terminal 6.
(c) Shine an electric light on the mirror, and check that there
is battery positive voltage and mirror surface becomes
bright to dark.
If operation is not as specified, replace the inner mirror.

BE0GH±22
I28421
Ignition SwitchSeat Heater Switch
Instrument Panel J/B

SEAT HEATER Relay

SEAT HTR Fuse
Seat Heater CushionSeat Heater Back
± BODY ELECTRICALSEAT HEATER SYSTEM
BE±123
3527 Author: Date:
2005 SEQUOIA (RM1146U)
SEAT HEATER SYSTEM
LOCATION

BE2D7±03
I18566
Left Side Heater Switch
Right Side Heater Switch
I18567
6
4
6
4
BE±124
± BODY ELECTRICALSEAT HEATER SYSTEM
3528 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT SEAT HEATER SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
Right side3 ± 4 ± 6Continuity
OFF±No continuity
Left side3 ± 4 ± 6Continuity
Illumination circuit1 ± 2Continuity
If continuity is not as specified, replace the switch.
2. INSPECT SEAT HEATER INDICATOR LIGHT OPERA-
TION
(a) Connect the positive (+) lead from the battery to terminal
4 and the negative (±) lead to terminal 6.
(b) Push the seat heater switch (right or left side) and check
that the indicator light comes on.
If operation is not as specified, replace the switch.

I18624
I18623
I18625
Wire Harness Side:
± BODY ELECTRICALSEAT HEATER SYSTEM
BE±125
3529 Author: Date:
2005 SEQUOIA (RM1146U)
3. INSPECT SEAT HEATER CUSHION CONTINUITY
(a) Heat the thermostat with a light.
(b) Inspect the seat heater cushion continuity between termi-
nals, as shown.
Tester connectionConditionSpecified condition
2 ± 4AlwaysContinuity
1 ± 3Seat heater temperature below 30°C (86°F)Continuity
1 ± 3Seat heater temperature above 40°C (104°F)No continuity
If continuity is not as specified, replace the seat cushion pad.
4. INSPECT SEAT BACK CONTINUITY
(a) Heat the thermostat with a light.
(b) Inspect the seat heater cushion continuity between termi-
nals, as shown.
Tester connectionConditionSpecified condition
2 ± 3AlwaysContinuity
1 ± 2, 1 ± 3Seat heater temperature below 30°C (86°F)Continuity
1 ± 2, 1 ± 3Seat heater temperature above 50°C (122°F)No continuity
If continuity is not as specified, replace the seat back pad.
5. INSPECT SEAT HEATER CUSHION CIRCUIT
Inspect the seat heater inner cushion and front cushion continu-
ity between terminals, as shown.

I18626
Wire Harness Side:
I0502712
3 5
1
2 3
5
BE±126
± BODY ELECTRICALSEAT HEATER SYSTEM
3530 Author: Date:
2005 SEQUOIA (RM1146U)Tester connection
ConditionSpecified condition
1 ± Body groundSeat heater switch ONBattery positive voltage
If continuity is not as specified, replace the seat back pad.
6. INSPECT SEAT BACK CONTINUITY
Inspect the seat back continuity between terminals, as shown.
Tester connectionConditionSpecified condition
1 ± Body groundAlwaysContinuity
If continuity is not as specified, replace the seat back pad.
7. INSPECT SEAT HEATER RELAY CONTINUITY
ConditionTester connectionSpecified condition
Always1 ± 2Continuity
Always3 ± 5No continuity
Apply B+ between
terminals 1 and 2.3 ± 5Continuity
If continuity is not as specified, replace the relay.

BE2MI±01
1 CLOCK WILL NOT OPERATE
I18689
Wire Harness Side:
B +GND
Ye s
Ye sNo
No
Is there battery positive voltage between terminal +B and body
ground.
Is there continuity between terminal GND and body ground.
Replace clock (Integration Control and Panel).Open or short circuit in wire harness between terminal
+B and DOME fuse.
Open circuit in wire harness between terminal
GND and body ground.
± BODY ELECTRICALCLOCK
BE±127
3531 Author: Date:
2005 SEQUOIA (RM1146U)
CLOCK
TROUBLESHOOTING
HINT:
Troubleshoot the clock according to the table below.
ProblemNo.
Clock will not operate1
Clock loses or gains time2
Allowable error (per day): ± 1.5 seconds
1. PROBLEM NO. 1
(a) Check that the battery positive voltage is 10 to 16 V.
If voltage is not as specified, replace the battery.
(b) Check that the DOME fuse is not blown.
If the fuse is blown, replace the fuse and check for a short.
(c) Troubleshoot the clock as follows.
HINT:
Inspect the connector on the wire harness side.

2 CLOCK LOSES OR GAINS TIME
I18689
Wire Harness Side:
B +GND
Ye s
Is there battery positive voltage between terminal +B and
body ground.
Adjust or replace clock.Bellow 10 V
Locate cause and repair, or recharge battery.
BE±128
± BODY ELECTRICALCLOCK
3532 Author: Date:
2005 SEQUOIA (RM1146U)
2. PROBLEM NO. 2
(a) Check that the battery positive voltage is 10 to 16 V.
If voltage is not as specified, replace the battery.
(b) Inspect the error of the clock.
Allowable error (per day): ± 1.5 seconds
If the error exceeds the allowable value, replace the clock.
(c) Check that the clock adjusting button is struck and has
failed to return.
If the error exceeds the allowable value, replace the clock.
(d) Troubleshoot the clock according to the following flow±
chart.
HINT:
Inspect the connector on the wire harness side.