2001 TOYOTA SEQUOIA Page 18

I28580
Front Seat Inner Belt:
(w/ Power Seat)
(w/o Power Seat)B16
B16
I28569
Combination Meter:
C5±4
± DIAGNOSTICSCOMBINATION METER SYSTEM
DI±1653
1847 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check harness and connector (Front seat inner belt ± combination meter and
front seat inner belt ± body ground).
PREPARATION:
Disconnect the C5 connector of the combination meter.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
C5±4 ± B16±2 (*1)Below 1 W
C5±4 ± B16±13 (*2)Below 1 W
B16±3 ± Body groundBelow 1 W
C5±4 ± Body ground10 kW or higher
*1: w/ Power Seat
*2: w/o Power Seat
NG Repair or replace harness or connector.
OK
Replace combination meter
(See page IN±35).

± DIAGNOSTICSCOMBINATION METER SYSTEM
DI±1655
1849 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 when using the hand±held tester and start from step 3 when not using the
hand±held tester.
1 Perform active test by hand±held tester.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON, and push the hand±held tester main switch ON.
CHECK:
From the display on the tester, perform the ºACTIVE TESTº.
METER:
ItemTest DetailsDiagnostic Note
OIL PRESS METERHIGH, 3/4, 1/2, 1/4, LOW (OFF)Confirm that the vehicle is stopped and engine is
idling.
OK:
Oil pressure receiver gauge readings change according to hand±held tester operation.
NG Replace combination meter
(See page IN±35).
OK

I01278
DI±1656
± DIAGNOSTICSCOMBINATION METER SYSTEM
1850 Author: Date:
2005 SEQUOIA (RM1146U)
2 Read value of hand±held tester.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON, and push the hand±held tester main switch ON.
CHECK:
Operate the hand±held tester according to the steps on the display and select ºDATA LISTº.
METER:
ItemMeasurement Item /
Range (Display)Normal ConditionDiagnostic Note
OIL GAUGEOil Gauge /
Min.: 0 Max.: 255Tester indication changes accord-
ing to the oil pressure receiver
gauge angle.

OK:
Oil pressure displayed on the tester is almost the same as the actual oil pressure.
OK Replace combination meter.
(See page IN±35)
NG
3 Inspect oil pressure sender gauge.
PREPARATION:
Disconnect the connector from the oil pressure sender.
CHECK:
(a) Check that no continuity exists between the terminal and
ground with the engine stopped.
(b) Check that continuity exists between the terminal and
ground with the engine running.
HINT:
Oil pressure should be over 24.5 kPa (0.25 kgf/cm
2, 3.55 psi).
OK:
When engine is stopped:
No continuity
When engine is running:
Continuity
NG Replace oil pressure sender gauge.
OK

I28569
Combination Meter:
C5±27
I28581
Oil Pressure Sender Gauge
Wire Harness:
O2
± DIAGNOSTICSCOMBINATION METER SYSTEM
DI±1657
1851 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check harness and connector (Oil pressure sender gauge ± combination meter).
PREPARATION:
Disconnect the C5 connector of the combination meter.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
C5±27 ± O2±1Below 1 W
C5±27 ± Body ground10 kW or higher
NG Repair or replace harness or connector.
OK
Replace combination meter
(See page IN±35).

± DIAGNOSTICSCOMBINATION METER SYSTEM
DI±1659
1853 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 when using the hand±held tester and start from step 2 when not using the
hand±held tester.
1 Perform active test by hand±held tester.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON, and push the hand±held tester main switch ON.
CHECK:
From the display on the tester, perform the ºACTIVE TESTº.
METER:
ItemTest DetailsDiagnostic Note
VOLT METER9 V / 12 V / 15 V / 18VConfirm that the vehicle is stopped and engine is
idling.
OK:
Volt meter readings change according to hand±held tester operation.
NG Replace combination meter
(See page IN±35).
OK
2 Check fuse.
CHECK:
Measure the resistance of the IGN1 fuse in the instrument panel J/B.
OK:
Below 1 W
CHECK:
Measure the resistance of the AM2 fuse in the engine room J/B.
OK:
Below 1 W
NG Inspect for short circuit in harness and all com-
ponents connected to fuse.
OK

I28570C6±24
DI±1660
± DIAGNOSTICSCOMBINATION METER SYSTEM
1854 Author: Date:
2005 SEQUOIA (RM1146U)
3 Inspect combination meter.
PREPARATION:
Disconnect the C6 connector of the combination meter.
CHECK:
Measure the voltage according to the value(s) in the table be-
low.
OK:
Terminal NoConditionSpecified condition
C6±24 ± Body groundIgnition switch ON10 to 14 V
NG Repair or replace harness or connector.
OK
Replace combination meter
(See page IN±35).

DID64±01
± DIAGNOSTICSSLIDING ROOF SYSTEM
DI±1661
1855 Author: Date:
2005 SEQUOIA (RM1146U)
SLIDING ROOF 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

DI272±11
Customer Problem Analysis
Vehicle Brought to Workshop
Problem Symptom ConfirmationSymptom Simulation Symptom does not occur
Problem Symptom Table
Circuit Inspection
Identification of Problem
Repair
Confirmation Test
EndTitles 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
23
5
6
8Step 6, 8 : Diagnostic steps permitting the use
of the hand±held tester. P. DI±1663
P. DI±1664
P. IN±24
P. DI±1668 ± DI±1675
Symptom occurs
7
Multiplex Communication System Inspection * 4
P. DI±1904
*: Confirm that there is no trouble by DTC check. DI±1662
± DIAGNOSTICSSLIDING ROOF SYSTEM
1856 Author: Date:
2005 SEQUOIA (RM1146U)
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
The ECU of this system is connected to the multiplex communication system. Therefore, before starting trou-
bleshooting, make sure to check that there is no trouble in the multiplex communication system.