Lexus NX: Terminals Of Ecu
TERMINALS OF ECU
CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)
(a) Disconnect the T9 sliding roof ECU (sliding roof drive gear sub-assembly) connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
| Tester Connection | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| T9-1 (IG) - Body ground | L - Body ground | IG power supply | Power switch off | Below 1 V |
| Power switch on (IG) | 11 to 14 V | |||
| T9-4 (UP) - Body ground | W - Body ground | Slide roof switch (UP) signal | Slide roof switch (UP) off → on | 1 kΩ or higher → Below 100 Ω |
| T9-5 (CLS) - Body ground | B - Body ground | Slide roof switch (CLOSE) signal | Slide roof switch (CLOSE) off → on | 1 kΩ or higher → Below 100 Ω |
| T9-6 (DWN) - Body ground | L - Body ground | Slide roof switch (DOWN) signal | Slide roof switch (DOWN) off → on | 1 kΩ or higher → Below 100 Ω |
| T9-7 (OPN) - Body ground | R - Body ground | Slide roof switch (OPEN) signal | Slide roof switch (OPEN) off → on | 1 kΩ or higher → Below 100 Ω |
| T9-8 (B) - Body ground | W - Body ground | Battery power supply | Power switch off | 11 to 14 V |
| T9-12 (E) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
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Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) Sliding roof system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). When the system seems to be malfunctioning,
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Sliding Roof / Troub
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. Th
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Removal
REMOVAL CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE 1. REMOVE NO. 3 DECK BOARD SUB-ASSEMBLY Click here 2. REMOVE REAR DECK FLOOR BOX Click here 3. REMOVE DECK FLOOR BOX LH Click here 4. PRECAUTIO
SRS Warning Light Remains ON
DESCRIPTION The SRS warning light is located in the combination meter assembly. When the SRS is normal, the SRS warning light comes on for approximately 6 seconds after the power switch is turned from off on (IG), and then goes off automatically. If there is a malfunction in the SRS, the SRS warning
