Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

PERFORM ACTIVE TEST USING INTELLIGENT TESTER OR TECHSTREAM (SLIDING ROOF OPERATION)

Select the Active Test, use the intelligent tester or Techstream to generate a control command, and then check that the sliding roof slides open / closed and tilts up / down

Intelligent tester

SLIDE ROOF

ACTIVE TEST - SLIDE ROOF

Tester Display	Test Part	Control Range	Diagnostic Note
SLIDE ROOF	Operate sliding roof SLIDE CLOSE/TILT UP	CLOS/UP Sliding roof SLIDE CLOSE or TILT UP operation occurs OFF Sliding roof is not operating	Be careful to avoid injuries as this test causes vehicle parts to move
SLIDE ROOF	Operate sliding roof SLIDE OPEN/TILT DOWN	OPEN/DWN Sliding roof SLIDE OPEN or TILT DOWN operation occurs OFF Sliding roof is not operating	Be careful to avoid injuries as this test causes vehicle parts to move

Techstream

Sliding Roof

ACTIVE TEST - SLIDING ROOF

Tester Display	Test Part	Control Range	Diagnostic Note
Slide Roof	Operate sliding roof SLIDE CLOSE/TILT UP	CLOS/UP Sliding roof SLIDE CLOSE or TILT UP operation occurs OFF Sliding roof is not operating	Be careful to avoid injuries as this test causes vehicle parts to move
Slide Roof	Operate sliding roof SLIDE OPEN/TILT DOWN	OPEN/DWN Sliding roof SLIDE OPEN or TILT DOWN operation occurs OFF Sliding roof is not operating	Be careful to avoid injuries as this test causes vehicle parts to move

OK: Sliding roof operates normally.

NG: REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (See REMOVAL )

OK: Go to next step

READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (HALL IC)

Use the Data List to check if the hall ICs are functioning properly

Intelligent tester

SLIDE ROOF

DATA LIST - SLIDE ROOF

Item	Measurement Item/Range	Normal Condition	Diagnostic Note
HALL IC1 STATUS	Hall IC1 status/NORMAL or LOCK	NORMAL Hall IC1 is normal LOCK Hall IC1 is abnormal	-
HALL IC1 PULSE	Hall IC1 signal/LO or HI	LO Hall IC1 output Lo HI Hall IC1 output Hi	-
HALL IC2 STATUS	Hall IC2 status/NORMAL or LOCK	NORMAL Hall IC2 is normal LOCK Hall IC2 is abnormal	-
HALL IC2 PULSE	Hall IC2 signal/LO or HI	LO Hall IC2 output Lo HI Hall IC2 output Hi	-

Techstream

Sliding Roof

DATA LIST - SLIDING ROOF

Item	Measurement Item/Range	Normal Condition	Diagnostic Note
Hall IC1 Status	Hall IC1 status/Normal or Lock	Normal Hall IC1 is normal Lock Hall IC1 is abnormal	-
Hall IC1 Pulse	Hall IC1 signal/Lo or Hi	Lo Hall IC1 output Lo Hi Hall IC1 output Hi	-
Hall IC2 Status	Hall IC2 status/Normal or Lock	Normal Hall IC2 is normal Lock Hall IC2 is abnormal	-
Hall IC2 Pulse	Hall IC2 signal/Lo or Hi	Lo Hall IC2 output Lo Hi Hall IC2 output Hi	-

OK: Tester displays other than "LOCK" or "Lock".

NG: REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (See REMOVAL )

OK: Go to next step

READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (SLIDING ROOF SWITCH)

Use the Data List to check if the sliding roof switch is functioning properly

Intelligent tester

SLIDE ROOF

DATA LIST - SLIDE ROOF

Item	Measurement Item/Range	Normal Condition	Diagnostic Note
OPEN SW	Sliding roof switch open signal/ ON or OFF	ON OPEN switch is pressed OFF OPEN switch is not pressed	-
CLOSE SW	Sliding roof switch close signal/ ON or OFF	ON CLOSE switch is pressed OFF CLOSE switch is not pressed	-
UPSW	Sliding roof switch tilt up signal/ ON or OFF	ON UP switch is pressed OFF UP switch is not pressed	-
DOWN SW	Sliding roof switch tilt down signal/ON or OFF	ON DOWN switch is pressed OFF DOWN switch is not pressed	-

Techstream

Sliding Roof

DATA LIST - SLIDING ROOF

Item	Measurement Item/Range	Normal Condition	Diagnostic Note
Open Switch	Sliding roof switch open signal/ ON or OFF	ON OPEN switch is pressed OFF OPEN switch is not pressed	-
Close Switch	Sliding roof switch close signal/ ON or OFF	ON CLOSE switch is pressed OFF CLOSE switch is not pressed	-
Up Switch	Sliding roof switch tilt up signal/ ON or OFF	ON UP switch is pressed OFF UP switch is not pressed	-
Down Switch	Sliding roof switch tilt down signal/ON or OFF	ON DOWN switch is pressed OFF DOWN switch is not pressed	-

OK: When the switch is operating, the intelligent tester or Techstream should display as shown in the table.

NG: Go to step 4

OK: REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (See REMOVAL )

INSPECT MAP LIGHT ASSEMBLY (SLIDING ROOF SWITCH)

Fig 1: Identifying Sliding Roof Switch Connectors

Remove the map light (see REMOVAL )
Measure the resistance according to the value(s) in the table below

Standard resistance

STANDARD RESISTANCE SPECIFICATION

Tester Connection	Switch Condition	Specified Condition
A-24 (UP) - A-16 (GND9)	TILT UP	Below 1 Ω
A-24 (UP) - A-16 (GND9)	Off	10 kΩ or higher
A-23 (DOWN) - A-16 (GND9)	TILT DOWN	Below 1 Ω
A-23 (DOWN) - A-16 (GND9)	Off	10 kΩ or higher
B-3 (OPN) - A-16 (GND9)	SLIDE OPEN	Below 1 Ω
B-3 (OPN) - A-16 (GND9)	Off	10 kΩ or higher
B-12 (CLS) - A-16 (GND9)	SLIDE CLOSE	Below 1 Ω
B-12 (CLS) - A-16 (GND9)	Off	10 kΩ or higher

NG: REPLACE MAP LIGHT ASSEMBLY (SLIDING ROOF SWITCH)

OK: Go to next step

CHECK HARNESS AND CONNECTOR (MAP LIGHT - SLIDING ROOF DRIVE GEAR AND BODY GROUND)

Fig 2: Identifying X5 Drive Gear, X4 And X6 Map Light Connectors

Disconnect the X5 drive gear connector
Disconnect the X4 and X6 map light connectors.
Measure the resistance according to the value(s) in the table below

Standard resistance

STANDARD RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
X5-10 (UP) - X4-24 (UP)	Always	Below 1 Ω
X5-8 (DWN) - X4-23 (DOWN)	Always	Below 1 Ω
XS-7 (OPN) - X6-3 (OPN)	Always	Below 1 Ω
X5-9 (CLS) - X6-12 (CLS)	Always	Below 1 Ω
X4-16 (GND9) - Body ground	Always	Below 1 Ω
XS-2 (E) - Body ground	Always	Below 1 Ω
X5-10 (UP) or X4-24 (UP) - Body ground	Always	10 kΩ or higher
X5-8 (DWN) or X4-23 (DOWN) - Body ground	Always	10 kΩ or higher
X5-7 (OPN) or X6-3 (OPN) - Body ground	Always	10 kΩ or higher
X5-9 (CLS) or X6-12 (CLS) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (See REMOVAL )