TOYOTA SEQUOIA 2001 Service Repair Manual

I27704
Combination Meter Wire Harness View:
C5±34C5
± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)DI±1529
1723 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check combination meter operation.
CHECK:
Check that the ºPº indicator light in the combination meter comes on when the shift lever is moved to the
P position.
OK:
The ºPº indicator light comes on.
NG Go to combination meter system (See page
DI±1610).
OK
2 Check harness and connector (Combination meter).
PREPARATION:
Disconnect the C5 combination meter connector.
CHECK:
Measure the voltage of each terminal of the wire harness side connectors.
OK:
Tester ConnectionConditionSpecified Condition
C5±34 ± Body groundIgnition switch is in ON position and shift lever is
in P position10 to 14 V
OK Proceed to next circuit inspection shown in
problem symptom table (See page DI±1508).
NG

I28706
Park/Neutral Position Switch Assy:
P1
RB
PL
DI±1530± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)
1724 Author: Date:
2005 SEQUOIA (RM1146U)
3 Inspect park/neutral position switch assy.
PREPARATION:
Disconnect the P1 switch connector.
CHECK:
Measure the resistance of each terminal of the wire harness
side connectors.
OK:
Tester Connection
(Symbols)ConditionSpecified Condition
P1±2 (RB) ± P1±6 (PL)Shift lever is moved to
P positionBelow 1 W
P1±2 (RB) ± P1±6 (PL)Shift lever is moved to any
position except P10 kW or higher
NG Replace park/neutral position switch.
OK

I28707
Wire Harness Side:
Park/Neutral Position Switch
P1
PL
I27704
Combination Meter Wire Harness View:
C5±34C5
I28707
Wire Harness Side:
Park/Neutral Position Switch
P1RB
± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)DI±1531
1725 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check harness and connector (Combination meter ± park/neutral position switch
assy).
CHECK:
Measure the resistance of each terminal of the wire harness
side connectors.
OK:
Tester Connection
(Symbols)ConditionSpecified Condition
C5±34 ± P1±6 (PL)AlwaysBelow 1 W
C5±34 ± Body groundAlways10 kW or higher
NG Repair or replace harness or connector.
OK
5 Check harness and connector (Park/neutral position switch assy ± battery).
CHECK:
Measure the voltage of each terminal of the wire harness side
connectors.
OK:
Tester Connection
(Symbols)ConditionSpecified Condition
P1±2 (RB) ± Body groundIgnition switch ON10 to 14 V
NG Repair or replace harness or connector.
OK

DI±1532± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)
1726 Author: Date:
2005 SEQUOIA (RM1146U)
Proceed to next circuit inspection shown in
problem symptoms table (See page
DI±1508).

I28450
MPX1 M61
12
B7
GR±R
1
D14
Door Courtesy Light
Switch Front LHGR±RBEAN
24
B5
DCTY J/C
J29
J30
NGBody ECUPosition Control
ECU & Switch
MPX2
± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)DI±1533
1727 Author: Date:
2005 SEQUOIA (RM1146U)
Door courtesy switch circuit
CIRCUIT DESCRIPTION
The position control ECU & switch assy detects the open/close condition of the driver's door, via multiplex
communication, through the front door courtesy light switch.
WIRING DIAGRAM
DIDEE±01

N20159
Ohmmeter Free
PushedD14
DI±1534± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)
1728 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check courtesy light system.
CHECK:
Check that the door courtesy light comes on when the driver's door is opened and goes off when it is closed.
OK:
The door courtesy light operates normally.
NG Go to courtesy light system
(See page BE±40).
OK
2 Inspect door courtesy light switch front LH.
PREPARATION:
Remove the courtesy light switch assy.
CHECK:
Measure the switch resistance.
OK:
Tester ConnectionSwitch PositionSpecified Condition
1 ± Switch bodySwitch pushed10 kW or higher
1 ± Switch bodySwitch freeBelow 1 W
NG Replace door courtesy light switch front LH.
OK

I27699
Body ECU Wire Harness View:
B7
DCTY
± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)DI±1535
1729 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check harness and connector (Body ECU ± door courtesy light switch assy).
PREPARATION:
(a) Disconnect the B7 body ECU connector.
(b) Reinstall the courtesy light switch assy.
(c) Reconnect the courtesy light switch assy connector.
CHECK:
Measure the resistance of the wire harness side connectors.
OK:
Tester Connection
(Symbol)ConditionSpecified Condition
B7±12 (DCTY) ±
Body groundCourtesy light switch
pushed " free10 kW or higher
" Below 1 W
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table (See page
DI±1508).

DIDEX±01
DI±1536
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1730 Author: Date:
2005 SEQUOIA (RM1146U)
CRUISE CONTROL SYSTEM
PRECAUTION
NOTICE:
When disconnecting the battery terminal, initialize the following system after the terminal is recon-
nected.
System NameSee Page
Back Door Power Window Control SystemBE±77

DI26R±41
Customer Problem Analysis
Check and Clear DTC
Vehicle Brought to Workshop
Problem Symptom ConfirmationSymptom Simulation Symptom does not occur
DTC CheckNormal system code
DTC Chart
Problem Symptoms Table
Circuit InspectionInput Signal Check
Parts Inspection
Identification of Problem
Repair
Confirmation Test
EndItems inside
are titles of pages in this
manual with the page number indicated in the
bottom portion. See the indicated pages for
detailed explanations. 1
2
34
5
6
7
89
10
Step 2, 5, 8, 10: Diagnostic steps permitting use of
the hand±held tester. P. DI±1538
P. DI±1545
P. DI±1545
P. DI±1549
P. IN±24
P. DI±1541
P. DI±1551 ± DI±1567
OKNG
Symptom occurs
Trouble code
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±1537
1731 Author: Date:
2005 SEQUOIA (RM1146U)
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshoot in accordance with the following procedures:

DI26S±26
CRUISE CONTROL SYSTEM Check Sheet
Inspector 's name:
Customer 's Name
Date Vehicle
Odometer Reading / /
Condition of
Problem Occurrence
Date Problem
Frequency
Occurred
Problem Occurs
Vehicle Speed when
Problem Occurred / /
Continuous Intermittent ( Times a day)
km
mile Brought in
Auto cancel
occurs
Driving condition
 City driving  Freeway  Uphill  Downhill

After cancel occurred, did the driver activate cruise control
again?
 Yes  No
 Cancel does not
occur With brake ON
 Shifting into any position except D
 When control SW is pulled to CANCEL position
 Cruise control
malfunction Slip to acceleration side
 Slip to deceleration side
 Hunting occurs
 O/D cut±off does not occur
 O/D does not return
 Switch
malfunction SET  ACCEL  COAST  RESUME  CANCEL
 Remains ON  Does not light up  Blinks Symptoms
DTC Check1st Time2nd Time
 Normal System Code  Trouble Code (Code )
 Normal System Code  Trouble Code (Code )  CRUISE main
indicator lightVIN
Production Date
Licence Plate No.
km
mile DI±1538
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1732 Author: Date:
2005 SEQUOIA (RM1146U)
CUSTOMER PROBLEM ANALYSIS CHECK