Lexus ES: Sliding Roof does not Move by Operating Sliding Roof Control Switch
DESCRIPTION
The sliding roof ECU (sliding roof drive gear sub-assembly) receives slide and tilt signals and operates its built-in motor when the sliding roof switch (map light sub-assembly) is operated.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
If the sliding roof ECU (sliding roof drive gear sub-assembly) is removed and reinstalled or replaced, the sliding roof ECU (sliding roof drive gear sub-assembly) must be initialized.
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If a sliding roof ECU (sliding roof drive gear sub-assembly) DTC is output, first perform troubleshooting for the sliding roof ECU (sliding roof drive gear sub-assembly) DTC.
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PROCEDURE
| 1. | PERFORM ACTIVE TEST USING TECHSTREAM (SLIDING ROOF) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Sliding Roof / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Sliding Roof > Active Test| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| Slide Roof | Operate sliding roof motor | OFF / Opn/Dwn / Clos/Up | - |
| Tester Display |
|---|
| Slide Roof |
OK:
Slide roof is operated using Techstream.
| NG | .gif) | GO TO STEP 5 |
|
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| 2. | READ VALUE USING TECHSTREAM |
(a) Enter the following menus: Body Electrical / Sliding Roof / Data List.
(b) Read the Data List according to the display on the Techstream.
Body Electrical > Sliding Roof > Data List| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Open Switch | OPEN switch signal | OFF or ON | OFF: OPEN switch not pressed ON: OPEN switch pressed | - |
| Close Switch | CLOSE switch signal | OFF or ON | OFF: CLOSE switch not pressed ON: CLOSE switch pressed | - |
| Up Switch | UP switch signal | OFF or ON | OFF: UP switch not pressed ON: UP switch pressed | - |
| Down Switch | DOWN switch signal | OFF or ON | OFF: DOWN switch not pressed ON: DOWN switch pressed | - |
| Tester Display |
|---|
| Open Switch |
| Close Switch |
| Up Switch |
| Down Switch |
OK:
The Techstream display changes according to the operation of each switch as shown in the table.
| OK | | REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) |
|
| 3. | INSPECT SLIDING ROOF SWITCH (MAP LIGHT SUB-ASSEMBLY) |
(a) Remove the sliding roof switch (map light sub-assembly).
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(b) Inspect the sliding roof switch (map light sub-assembly).
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| NG | | REPLACE SLIDING ROOF SWITCH (MAP LIGHT SUB-ASSEMBLY) |
|
| 4. | CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) - SLIDING ROOF SWITCH (MAP LIGHT SUB-ASSEMBLY) AND BODY GROUND) |
(a) Disconnect the P13 sliding roof switch (map light sub-assembly) connector.
(b) Disconnect the P22 sliding roof ECU (sliding roof drive gear sub-assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| P22-8 (CLS) - P13-12 (CLS) | Always | Below 1 Ω |
| P22-8 (CLS) or P13-12 (CLS) - Body ground | Always | 10 kΩ or higher |
| P22-10 (OPN) - P13-11 (OPN) | Always | Below 1 Ω |
| P22-10 (OPN) or P13-11 (OPN) - Body ground | Always | 10 kΩ or higher |
| P22-9 (DWN) - P13-24 (DOWN) | Always | Below 1 Ω |
| P22-9 (DWN) or P13-24 (DOWN) - Body ground | Always | 10 kΩ or higher |
| P22-5 (UP) - P13-23 (UP) | Always | Below 1 Ω |
| P22-5 (UP) or P13-23 (UP) - Body ground | Always | 10 kΩ or higher |
| P13-19 (GND) - Body ground | Always | Below 1 Ω |
| P22-2 (E) - Body ground | Always | Below 1 Ω |
| OK | | REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 5. | CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) - IG POWER SUPPLY AND BODY GROUND) |
| (a) Disconnect the P22 sliding roof ECU (sliding roof drive gear sub-assembly) connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| P22-1 (B) - Body ground | Engine switch off | 11 to 14 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| P22-2 (E) - Body ground | Always | Below 1 Ω |
| OK | | REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspect
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