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 assembly) is operated.
WIRING DIAGRAM
Click here
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
Click here
PROCEDURE
1. | READ VALUE USING TECHSTREAM |
(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 / Data List.
(e) 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.
NG | ![]() | GO TO STEP 5 |
|
2. | CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) - BATTERY AND BODY GROUND) |
(a) Disconnect the U2 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 |
---|---|---|
U2-1 (B) - Body ground | Always | 11 to 14 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
U2-2 (E) - Body ground | Always | Below 1 Ω |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. | CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) - IG POWER SUPPLY) |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. | INSPECT SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY) |
(a) Remove the sliding roof switch (map light assembly).
Click here
(b) Inspect the sliding roof switch (map light assembly).
Click here
OK | ![]() | REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) |
NG | ![]() | REPLACE SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY) |
5. | INSPECT SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY) |
(a) Remove the sliding roof switch (map light assembly).
Click here
(b) Inspect the sliding roof switch (map light assembly).
Click here
NG | ![]() | REPLACE SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY) |
|
6. | CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) - SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY) AND BODY GROUND) |
(a) Disconnect the U11 sliding roof switch (map light assembly) connector.
(b) Disconnect the U2 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 |
---|---|---|
U2-8 (CLS) - U11-12 (CLS) | Always | Below 1 Ω |
U2-8 (CLS) or U11-12 (CLS) - Body ground | Always | 10 kΩ or higher |
U2-10 (OPN) - U11-11 (OPN) | Always | Below 1 Ω |
U2-10 (OPN) or U11-11 (OPN) - Body ground | Always | 10 kΩ or higher |
U2-9 (CLS) - U11-24 (DOWN) | Always | Below 1 Ω |
U2-9 (CLS) or U11-24 (DOWN) - Body ground | Always | 10 kΩ or higher |
U2-5 (OPN) - U11-23 (UP) | Always | Below 1 Ω |
U2-5 (OPN) or U11-23 (UP) - Body ground | Always | 10 kΩ or higher |
U11-19 (GND) - Body ground | Always | Below 1 Ω |
U2-2 (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 |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Front Radar Sensor System: Lost Communication with Cruise Control Module Missing Message (U010487)
DESCRIPTION The millimeter wave radar sensor assembly communicates with the forward recognition camera via CAN communication. If a communication error is detected between the forward recognition camera and millimeter wave radar sensor assembly, the millimeter wave radar sensor assembly stores this D ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Wireless Door Lock Control System: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
The wireless door lock control system troubleshooting procedure is based on the premise that the power door lock control system is operating properly. Check the power door lock control system first before troubleshooting the wireless door lock control system. Use thi ...