2001 TOYOTA SEQUOIA Page 18

DI276±09
DI±1664
± DIAGNOSTICSSLIDING ROOF SYSTEM
1858 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
SymptomSuspect AreaSee page
Sliding roof control system does not operate.
1. SUN ROOF Fuse
2. ECU±IG Fuse
3. Power Source Circuit
4. Sliding Roof Control Switch CircuitBE±14
BE±14
DI±1668
DI±1671
Sliding roof operates abnormally or stops half way.Sliding Roof Pulse Plate CircuitDI±1675
Jam protection system does not operate.Sliding Roof Pulse Plate CircuitDI±1675

± DIAGNOSTICSSLIDING ROOF SYSTEM
DI±1669
1863 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
HINT:
If not using the hand±held tester, start from STEP 2.
1 Perform active test.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn ignition switch ON and hand±held tester main switch ON.
(c) Select the ACTIVE TEST mode on the hand±held tester.
CHECK:
Check that ºSliding roof motorº operates as the hand±held tester directs.
SLIDE ROOF:
ItemTest DetailsDiagnostic Note
SLIDE ROOFSliding roof CLOS/UP ± OPN/DWNDuring this ACTIVE TEST, jam protection caught
detection can be monitored.
NOTICE:
Caution is necessary for a part of body not to be caught in as the jam protection system does not
operate during conducting ACTIVE TEST.
HINT:
With one ACTIVE direction, the sliding roof can be slid and tilted continuously.
OK:
The slide roof operates normally.
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±1664).
NG

DI±1670
± DIAGNOSTICSSLIDING ROOF SYSTEM
1864 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check voltage between terminals B, IG and GND of sliding roof control ECU con-
nector.
PREPARATION:
Turn ignition switch ON.
CHECK:
Measure voltage between terminals IG and GND.
OK:
Voltage: 10 to 14 V
PREPARATION:
(a) Turn ignition switch OFF.
(b) Disconnect the sliding roof control ECU connector.
CHECK:
Measure voltage between terminals B and GND.
OK:
Voltage: 10 to 14 V
OK Proceed to next circuit inspection shown on
problem symptom table (See page DI±1664).
NG
Repair or replace wire harness and connec-
tor.

DI±1674
± DIAGNOSTICSSLIDING ROOF SYSTEM
1868 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check for open and short in harness and connectors between sliding roof con-
trol ECU and sliding roof control switch or overhead module (See page IN±35).
NG Repair and replace harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table
(See page DI±1664).

Limit
Switch
No. 1 Sliding
Roof
Status
Fully
Opened
SlidingFully
ClosedTilting
Limit
Switch
No. 2250 mm point from fully
opened position
About 10 mm
± DIAGNOSTICSSLIDING ROOF SYSTEM
DI±1675
1869 Author: Date:
2005 SEQUOIA (RM1146U)
Sliding Roof Pulse Plate Circuit
WIRING DIAGRAM
See page DI±1668.
INSPECTION PROCEDURE
HINT:
If not using the hand±held tester, start from STEP 3.
1 Check sliding roof pulse plate operation.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn ignition switch ON and hand±held tester main switch ON.
(c) Select the DATA LIST mode on the hand±held tester.
CHECK:
(a) Operate the sliding roof.
(b) At this time, check that status (ON/OFF) of limit switch 1 and limit switch 2 changes on the hand±held
tester screen as shown in the chart below.
SLIDE ROOF:
ItemMeasurement Item/
Display (Range)Normal conditionDiagnostic Note
LIMIT SW 1Position SW NO.1/
ON or OFFON: 250 mm point from fully opened position
OFF: Sliding roof fully closed position±
LIMIT SW 2Position SW NO.2/
ON or OFFON: Sliding roof fully closed position
OFF: Sliding roof except fully closed position±
OK:
NG Replace sliding roof gear assembly.
OK
DI279±11

CLOSE/UP
(OPEN/DOWN)
SWITCHON
OFF
Close
(Down)
Roof OperationStop Forced Operation Reverse
Stop
Close (Down)
Close Position Approx. 10 sec.
± DIAGNOSTICSSLIDING ROOF SYSTEM
DI±1677
1871 Author: Date:
2005 SEQUOIA (RM1146U)
3 Perform forced operation.
Operate the sliding roof control switch in the CLOSE/UP direction. The jam protection function starts to oper-
ate and reverses. Keeping the CLOSE/UP direction further some 10 seconds restricts the jam protection
function forcibly and begins manual operation.
HINT:
To conduct the sliding roof alignment, restricting the jam protection function is required.
NEXT
4 Check sliding roof glass alignment (Mechanical malfunction)
(See page IN±35).
NG Adjust sliding roof (See page BO±82).
OK
Replace sliding roof gear assembly.

DID97±01
DI±1678
± DIAGNOSTICSBODY CONTROL SYSTEM
1872 Author: Date:
2005 SEQUOIA (RM1146U)
BODY 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

DI1OD±22
Customer Problem Analysis
Vehicle Brought to Workshop
Problem Symptom ConfirmationSymptom Simulation Symptom does not
occur
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
65
8P. IN±24 P. DI±1683
P. DI±1700 ± DI±1774
Symptom
occurs
Step 4, 6, 8: Diagnostic steps permitting the use of the hand±held tester. 7
Problem Symptoms Table
P. DI±1686
P. DI±1904
Multiplex communication system inspection * 4
*: Confirm that there is no trouble by DTC check.
DI±1682
± DIAGNOSTICSBODY CONTROL SYSTEM
1876 Author: Date:
2005 SEQUOIA (RM1146U)
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
This ECU is connected to the multiplex communication system. Therefore, be sure to check that there is no
troubles in the multiplex communication system before performing the troubleshooting.