Sliding Roof: Overview Lexus IS II

SYSTEM DESCRIPTION

1. GENERAL This system has the following functions: manual slide open and close; auto slide open and close; manual tilt up and down; jam protection; key off operation; key-linked open and close; and transmitter-linked open and close.
2. FUNCTION OF MAIN COMPONENT SYSTEM COMPONENT DESCRIPTION Component Outline Sliding roof drive gear sub-assembly (Sliding roof ECU) Sliding roof ECU controls sliding roof motor to rotate forward and backward, which tilts or slides sliding roof glass. Overhead junction block Output of operation signals from built-in sliding roof switch to sliding roof ECU are handled by overhead junction block.
3. SYSTEM OPERATION The sliding roof has the following features. SYSTEM FUNCTION OPERATION DESCRIPTION Function Outline Manual open-and-close This function opens or closes the sliding roof in 7 stages according to the sliding roof dial switch position. One-touch auto open-and-close Pushing the sliding roof dial switch once enables the sliding roof to be opened to the comfort stop position or fully closed. If the dial switch is pushed again during the sliding roof open or close operation, the sliding roof will stop the operation. One-touch auto tilt up-and-down Turning the sliding roof dial switch to the TILT UP or DOWN position enables the sliding roof to be fully tilted up or down. Jam protection The "jam protection" function automatically stops the sliding roof and moves it open half way (or fully tilt up) if a foreign object gets jammed in the sliding roof during close or tilt down operation. Key-off operation The "key-off operation" function makes it possible to operate the sliding roof for approx. 43 seconds after the engine switch is turned to the on (ACC) or off, if the front doors are not opened. Key-linked open-and-close Function When key is not in vehicle, the driver's door is locked, and the key in the driver's door is turned and maintained in the lock direction for 1.5 seconds or more, the sliding roof ECU activates the sliding roof motor to close the moon roof while the key is turned. Similarly, when the driver's door is unlocked, turning and maintaining the driver's door key in the unlock direction for 2.5 seconds or more will cause the moon roof to be opened. Transmitter-linked open function When the power window master switch receives an unlock signal from the transmitter continuously for longer than 3.4 seconds, the sliding roof ECU control the sliding roof motor in accordance with the signal to open the moon roof. Sliding roof open warning When the engine switch is turned from on (IG) to off and the driver door is opened with the sliding roof open, the buzzer in the combination meter sounds once. Then, the warning message appears on the multi-information display.

DESCRIPTION

The sliding roof drive gear sub-assembly (sliding roof ECU) receives slide switch and tilt switch signals and drives its built-in motor.

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1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (SLIDING ROOF OPERATION) Select the Active Test, use the intelligent tester to generate a control command, and then check that the sliding roof slides open/close and tilts up/down. SLIDE ROOF SLIDE ROOF DIAGNOSTIC DATA LIST Item Test Details Diagnostic Note SLIDE ROOF Operate sliding roof CLOSE/UP - SLIDE ROOF Operate sliding roof OPEN/DOWN - OK: Sliding roof operates normally. NG: REPLACE SLIDING ROOF ECU OK: Go to next step.
2. INSPECT MAP LIGHT ASSEMBLY Disconnect the R5 connector. Check the sliding roof switch. Measure the resistance of the map light assembly. Standard resistance STANDARD RESISTANCE SPECIFICATION Switch Condition Tester Connection Resistance 1 R5-8 (DOWN) - R5-39 (GND) Below 1 ohms 1 R5-9 (UP) - R5-39 (GND) 10 k ohms or higher 1 R5-10 (CLS) - R5-39 (GND) 10 k ohms or higher 1 R5-11 (OPN) - R5-39 (GND) 10 k ohms or higher 2 R5-8 (DOWN) - R5-39 (GND) Below 1 ohms 2 R5-9 (UP) - R5-39 (GND) Below 1 ohms 2 R5-10 (CLS) - R5-39 (GND) 10 k ohms or higher 2 R5-11 (OPN) - R5-39 (GND) 10 k ohms or higher 3 R5-8 (DOWN) - R5-39 (GND) 10 k ohms or higher 3 R5-9 (UP) - R5-39 (GND) Below 1 ohms 3 R5-10 (CLS) - R5-39 (GND) 10 k ohms or higher 3 R5-11 (OPN) - R5-39 (GND) 10 k ohms or higher 4 R5-8 (DOWN) - R5-39 (GND) 10 k ohms or higher 4 R5-9 (UP) - R5-39 (GND) Below 1 ohms 4 R5-10 (CLS) - R5-39 (GND) 10 k ohms or higher 4 R5-11 (OPN) - R5-39 (GND) Below 1 ohms 5 R5-8 (DOWN) - R5-39 (GND) 10 k ohms or higher 5 R5-9 (UP) - R5-39 (GND) 10 k ohms or higher 5 R5-10 (CLS) - R5-39 (GND) 10 k ohms or higher 5 R5-11 (OPN) - R5-39 (GND) Below 1 ohms 6 R5-8 (DOWN) - R5-39 (GND) 10 k ohms or higher 6 R5-9 (UP) - R5-39 (GND) 10 k ohms or higher 6 R5-10 (CLS) - R5-39 (GND) Below 1 ohms 6 R5-11 (OPN) - R5-39 (GND) Below 1 ohms 7 R5-8 (DOWN) - R5-39 (GND) 10 k ohms or higher 7 R5-9 (UP) - R5-39 (GND) Below 1 ohms 7 R5-10 (CLS) - R5-39 (GND) Below 1 ohms 7 R5-11 (OPN) - R5-39 (GND) Below 1 ohms 8 R5-8 (DOWN) - R5-39 (GND) 10 k ohms or higher 8 R5-9 (UP) - R5-39 (GND) Below 1 ohms 8 R5-10 (CLS) - R5-39 (GND) Below 1 ohms 8 R5-11 (OPN) - R5-39 (GND) 10 k ohms or higher 9 R5-8 (DOWN) - R5-39 (GND) Below 1 ohms 9 R5-9 (UP) - R5-39 (GND) Below 1 ohms 9 R5-10 (CLS) - R5-39 (GND) Below 1 ohms 9 R5-11 (OPN) - R5-39 (GND) 10 k ohms or higher 10 R5-8 (DOWN) - R5-39 (GND) Below 1 ohms 10 R5-9 (UP) - R5-39 (GND) 10 k ohms or higher 10 R5-10 (CLS) - R5-39 (GND) Below 1 ohms 10 R5-11 (OPN) - R5-39 (GND) 10 k ohms or higher 11 R5-7 (CHK) - R5-39 (GND) Below 1 ohms NG: REPLACE MAP LIGHT ASSEMBLY OK: Go to next step.
3. CHECK WIRE HARNESS (SLIDING ROOF ECU - MAP LIGHT ASSEMBLY) Disconnect the R6 sliding roof ECU and R5 map light connectors. Check the resistance between the wire harness side connectors. Standard resistance SLIDING ROOF ECU - MAP LIGHT ASSEMBLY Tester Connection Specified Condition R6-6 (IG) - R5-24 (IG3) Below 1 ohms R6-6 (IG) - Body ground 10 k ohms or higher R6-2 (CHK) - R5-7 (CHK) Below 1 ohms R6-2 (CHK) - Body ground 10 k ohms or higher R6-8 (CLS)-R5-10 (CLS) Below 1 ohms R6-8 (CLS) - Body ground 10 k ohms or higher R6-9 (OPN) - R5-11 (OPN) Below 1 ohms R6-9 (OPN) - Body ground 10 k ohms or higher R6-4 (DWN) - R5-8 (DOWN) Below 1 ohms R6-4 (DWN) - Body ground 10 k ohms or higher R6-3 (UP) - R5-9 (UP) Below 1 ohms R6-3 (UP) - Body ground 10 k ohms or higher R5-39 (GND) - Body ground Below 1 ohms R6-7 (E) - Body ground Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE SLIDING ROOF ECU

The sliding roof ECU receives signals from the sliding roof switch and activates the sliding roof. However, fuse, wire harness or sliding roof ECU malfunctions may cause the sliding roof system to stop operating.

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1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (SLIDING ROOF OPERATION) Select the Active Test, use the intelligent tester to generate a control command, and then check that the sliding roof slides open/close and tilts up/down. SLIDE ROOF SLIDE ROOF DIAGNOSTIC DATA LIST Item Test Details Diagnostic Note SLIDE ROOF Operate sliding roof CLOSE/UP - SLIDE ROOF Operate sliding roof OPEN/DOWN - OK: Sliding roof operates normally. NG: Go to step 2 OK: REPLACE SLIDING ROOF ECU
2. INSPECT FUSE (S/ROOF, DC/DC, ECU-B No.1) Remove the S/ROOF fuse from the cowl side J/B LH. Remove the ECU-IG LH fuse from the cowl side J/B LH. Measure the resistance of the fuses. Standard resistance: Below 1 ohms NG: REPLACE FUSE OK: Go to next step.
3. CHECK SLIDING ROOF ECU (POWER SOURCE) Disconnect the R6 sliding roof ECU connector. Check the voltage between the wire harness side connector and the body ground. Standard voltage SLIDING ROOF ECU (POWER SOURCE) Tester Connection Specified Condition R6-5 (B) - Body ground 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step.
4. CHECK SLIDING ROOF ECU (GROUND) Disconnect the R6 sliding roof ECU connector. Check the resistance between the wire harness side connector and the body ground. Standard resistance SLIDING ROOF ECU (GROUND) Tester Connection Specified Condition R6-7 (E) - Body ground Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE MAP LIGHT ASSEMBLY

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1. REMOVE ROOF HEADLINING ASSEMBLY (See «REMOVAL»(ref-235599-S10274364092006062400000) )
2. REMOVE CURTAIN SHIELD AIRBAG ASSEMBLY LH (See «DTC B1830/57 SHORT IN DRIVER SIDE CURTAIN SHIELD SQUIB CIRCUIT: DTC B1831/57 OPEN IN DRIVER SIDE CURTAIN SHIELD SQUIB CIRCUIT: DTC B1832/57 SHORT TO GND IN DRIVER SIDE CURTAIN SHIELD SQUIB CIRCUIT: DTC B1833/57 SHORT TO B+ IN DRIVER SIDE CURTAIN SHIELD SQUIB CIRCUIT»(ref-235542-S01892505252006062400000) )
3. REMOVE CURTAIN SHIELD AIRBAG ASSEMBLY RH
4. REMOVE SLIDING ROOF SIDE GARNISH LH Disengage the 5 claws and remove the sliding roof side garnish LH.
5. REMOVE SLIDING ROOF SIDE GARNISH RH
6. REMOVE SLIDING ROOF GLASS SUB-ASSEMBLY Using a T25 "torx" driver, remove the 4 screws and sliding roof glass sub-assembly.
7. REMOVE SLIDING ROOF HOUSING SUB-ASSEMBLY Disconnect the 4 sliding roof drain hoses. Remove the 6 bolts, 8 nuts, and sliding roof housing sub-assembly.
8. REMOVE SLIDING ROOF WEATHERSTRIP Remove the sliding roof weatherstrip from the sliding roof housing sub-assembly.

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1. REMOVE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY Disengage the claw and remove the sliding roof drive gear bracket. Remove the 2 bolts and sliding roof drive gear sub-assembly.
2. REMOVE SUNSHADE TRIM SUB-ASSEMBLY Remove the 2 screws and sliding roof piece sub-assembly LH and RH. Slide and remove the sunshade trim sub-assembly.
3. REMOVE SLIDING ROOF DRIVE CABLE SUB-ASSEMBLY NOTE: Do not disassemble the sliding roof drive cable sub-assembly except when replacing it. Remove the 2 screws and sliding roof side stoppers. Using a screwdriver, disengage the 2 claws. Then slide the sliding roof drip channel rearward to remove it. HINT: Tape the screwdriver tip before use. Hold down the window deflector. Using a screwdriver, slide the sliding roof drive cable sub-assembly in the direction indicated by the arrow in the illustration to remove it.

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1. INSTALL SLIDING ROOF DRIVE CABLE SUB-ASSEMBLY Hold down the window deflector. NOTE: Check and be sure that the spring indicated by the arrow in the illustration is securely installed. Using a screwdriver, slide the sliding roof drive cable sub-assembly in the direction indicated by the arrow in the illustration to install it. Engage the 2 claws and install the sliding roof drip channel. Install the 2 sliding roof side stoppers with the 2 screws. Torque: 2.0 N*m (20 kgf*cm, 18 in.*lbf)
2. ADJUST FULLY CLOSED POSITION Using a screwdriver, slide the sliding roof drive cable sub-assembly in either direction as indicated by the arrows in the illustration and align the matchmarks. HINT: Tape the screwdriver tip before use.
3. INSTALL SUNSHADE TRIM SUB-ASSEMBLY Insert the sunshade trim into the sliding roof housing sub-assembly. Install the sliding roof piece sub-assembly LH and RH with the 2 screws. Torque: 2.0 N*m (20 kgf*cm, 18 in.*lbf)
4. INSTALL SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY Install the sliding roof drive gear sub-assembly with the 2 bolts. Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) Engage the claw and install the sliding roof drive gear bracket.

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1. INSTALL SLIDING ROOF WEATHERSTRIP Install the sliding roof weatherstrip as follows: Position the joint of the weatherstrip at the rear center. Align the marks on the weatherstrip with the middle marks at the corners of the plastic on the edge of the sliding roof panel and install the weatherstrip. Make sure that the marks on the weatherstrip are positioned within the area indicated by the marks at the corners of the plastic on the edge of the sliding roof panel. Install the lip of the weatherstrip firmly.
2. INSTALL SLIDING ROOF HOUSING SUB-ASSEMBLY Install the sliding roof housing sub-assembly with the 6 bolts and 8 nuts. Torque: Nut 5.5 N*m (56 kgf*cm, 49 in.*lbf) Bolt 8.0 N*m (82 kgf*cm, 71 in.*lbf) Connect the 4 sliding roof drain hoses. NOTE: The clip must face toward the outside of the vehicle and also be above the lower surface of the sliding roof housing when installing the drain hoses.
3. INSTALL SLIDING ROOF GLASS SUB-ASSEMBLY Using a T25 "torx" driver, temporarily install the sliding roof glass sub-assembly with the 4 screws. Perform a level check. Check the difference in level for "a" between the roof panel and the upper surface of the weather strip when the sliding roof glass is fully closed. Standard STANDARD MEASUREMENT SPECIFICATION Area Measurement A-A 0 + 1.0 mm (0 + 0.039 in.) 0 - 2.0 mm (0 - 0.079 in.) B-B 0 + 2.0 mm (0 + 0.079 in.) 0 - 1.0 mm (0 - 0.039 in.) C-C 0 + 1.5 mm (0 + 0.059 in.) 0 - 1.5 mm (0 - 0.059 in.) D-D 0 + 1.5 mm (0 + 0.059 in.) 0 - 1.0 mm (0 - 0.039 in.) HINT: "+" represents the condition that the glass is above the panel level."-" represents the condition that the glass is below the panel level. Perform a gap check. Check the gap between the roof panel and roof glass. NOTE: The gap must be even all around. After adjusting the sliding roof glass, using a T25 "torx" driver, install the sliding roof glass sub-assembly with the 4 screws. Torque: 5.5 N*m (56 kgf*cm, 49 in.*lbf)
4. CHECK FOR WATER LEAKS After adjusting the sliding roof glass sub-assembly, check for water leaks. If there are any leaks, readjust the sliding roof glass sub-assembly.
5. INSTALL SLIDING ROOF SIDE GARNISH LH Engage the 5 claws and install the sliding roof side garnish LH.
6. INSTALL SLIDING ROOF SIDE GARNISH RH
7. INSTALL CURTAIN SHIELD AIRBAG ASSEMBLY LH (See «DTC B1830/57 SHORT IN DRIVER SIDE CURTAIN SHIELD SQUIB CIRCUIT: DTC B1831/57 OPEN IN DRIVER SIDE CURTAIN SHIELD SQUIB CIRCUIT: DTC B1832/57 SHORT TO GND IN DRIVER SIDE CURTAIN SHIELD SQUIB CIRCUIT: DTC B1833/57 SHORT TO B+ IN DRIVER SIDE CURTAIN SHIELD SQUIB CIRCUIT»(ref-235542-S01892505252006062400000) )
8. INSTALL CURTAIN SHIELD AIRBAG ASSEMBLY RH
9. INSTALL ROOF HEADLINING ASSEMBLY (See «INSTALLATION»(ref-235599-S41342360772006062400000) )
10. RESET SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (See «INITIALIZATION»(ref-235588-S25882171102006062400000) )
11. CHECK SLIDING ROOF SYSTEM (See page «TERMINALS OF ECU»(ref-235588-S37253320802006062400000) )

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1. INSPECT MAP LIGHT ASSEMBLY Remove the map light assembly. Measure the resistance of the map light assembly. Standard resistance MAP LIGHT ASSEMBLY Switch Condition Tester Connection Resistance 1 R5-8 (DOWN) - R5-39 (GND) Below 1 ohms 1 R5-9 (UP) - R5-39 (GND) 10 k ohms or higher 1 R5-10 (CLS) - R5-39 (GND) 10 k ohms or higher 1 R5-11 (OPN) - R5-39 (GND) 10 k ohms or higher 2 R5-8 (DOWN) - R5-39 (GND) Below 1 ohms 2 R5-9 (UP) - R5-39 (GND) Below 1 ohms 2 R5-10 (CLS) - R5-39 (GND) 10 k ohms or higher 2 R5-11 (OPN) - R5-39 (GND) 10 k ohms or higher 3 R5-8 (DOWN) - R5-39 (GND) 10 k ohms or higher 3 R5-9 (UP) - R5-39 (GND) Below 1 ohms 3 R5-10 (CLS) - R5-39 (GND) 10 k ohms or higher 3 R5-11 (OPN) - R5-39 (GND) 10 k ohms or higher 4 R5-8 (DOWN) - R5-39 (GND) 10 k ohms or higher 4 R5-9 (UP) - R5-39 (GND) Below 1 ohms 4 R5-10 (CLS) - R5-39 (GND) 10 k ohms or higher 4 R5-11 (OPN) - R5-39 (GND) Below 1 5 R5-8 (DOWN) - R5-39 (GND) 10 k ohms or higher 5 R5-9 (UP) - R5-39 (GND) 10 k ohms or higher 5 R5-10 (CLS) - R5-39 (GND) 10 k ohms or higher 5 R5-11 (OPN) - R5-39 (GND) Below 1 ohms 6 R5-8 (DOWN) - R5-39 (GND) 10 kw ohms or higher 6 R5-9 (UP) - R5-39 (GND) 10 k1 ohms or higher 6 R5-10 (CLS) - R5-39 (GND) Below 1 ohms 6 R5-11 (OPN) - R5-39 (GND) Below 1 ohms 7 R5-8 (DOWN) - R5-39 (GND) 10 k ohms or higher 7 R5-9 (UP) - R5-39 (GND) Below 1 ohms 7 R5-10 (CLS) - R5-39 (GND) Below 1 ohms 7 R5-11 (OPN) - R5-39 (GND) Below 1 ohms 8 R5-8 (DOWN) - R5-39 (GND) 10 k ohms or higher 8 R5-9 (UP) - R5-39 (GND) Below 1 ohms 8 R5-10 (CLS) - R5-39 (GND) Below 1 ohms 8 R5-11 (OPN) - R5-39 (GND) 10 k ohms or higher 9 R5-8 (DOWN) - R5-39 (GND) Below 1 ohms 9 R5-9 (UP) - R5-39 (GND) Below 1 ohms 9 R5-10 (CLS) - R5-39 (GND) Below 1 ohms 9 R5-11 (OPN) - R5-39 (GND) 10 k ohms or higher 10 R5-8 (DOWN) - R5-39 (GND) Below 1 ohms 10 R5-9 (UP) - R5-39 (GND) 10 k ohms or higher 10 R5-10 (CLS) - R5-39 (GND) Below 1 ohms 10 R5-11 (OPN) - R5-39 (GND) 10 k ohms or higher 11 R5-7 (CHK) - R5-39 (GND) Below 1 ohms If the result is not as specified, replace the map light assembly.