Lexus NX: Problem Symptoms Table
Lexus NX Service Manual / Vehicle Exterior / Sliding Roof / Convertible / Sliding Roof System / Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
- 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 suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Link |
|---|---|---|
| Remote control system does not operate. | Proceed to "Remote Control System does not Operate" | |
| Key-off operation function operates even if operating conditions are not satisfied. | Proceed to "Key-off Operation Function Operates even if Operating Conditions are not Satisfied" | |
| Sliding roof does not move by operating sliding roof control switch. | Proceed to "Sliding Roof does not Move by Operating Sliding Roof Control Switch" | |
| Slide roof warning buzzer malfunction (roof glass is operates). | Meter / gauge system | |
| Slide roof ford not move. | Harness and connector | - |
| Sliding roof drive gear sub-assembly (sliding roof ECU) | |
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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
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
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Lost Communication with EV ECU (U0100,U0129,U0131,U0142,U0151,U0163,U0182,U023A)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area U0100 Lost Communication with EV ECU Both conditions are met:
IG voltage is 10.5 V or higher.
No communication with the ECM or hybrid vehicle control ECU continues for 2 seconds or more.
ECM
Hybri
Parts Location
PARTS LOCATION ILLUSTRATION *A w/ Rain Sensor *B w/ Headlight Cleaner System *C for Triple Beam Headlight *D for Single Beam Headlight *1 WINDSHIELD WIPER MOTOR ASSEMBLY *2 HEADLIGHT CLEANER CONTROL RELAY *3 HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY *4 RAIN SE
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