WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
PROCEDURE
1. | CHECK SYMPTOMS |
(a) Recheck the situation when the malfunction occurs.
HINT:
Result | Proceed to |
---|---|
Symptom occurs in any situation. | A |
Symptom occurs when hand is rested on the remote touch screen while driving. | B |
Symptom occurs when accelerating excessively on rough roads. | C |
B | ![]() | END |
C | ![]() | GO TO STEP 5 |
|
2. | CHECK FOR FOREIGN MATTER |
(a) Check if there is any foreign matter around the remote touch screen that interferes with operation of the screen.
OK:
There is no foreign matter around the remote touch screen that interferes with operation of the screen.
NG | ![]() | REMOVE FOREIGN MATTER (CHECK OPERATION AGAIN) |
|
3. | REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) SELF CHECK (CHECK REMOTE TOUCH SCREEN OPERATION POSITION RECOGNITION CONDITION) |
(a) Enter self-diagnostic mode.
Click here
(b) Operate the remote touch screen diagonally from the upper left to the lower right and check that the brightness of the switch illumination changes. NOTICE: Since the remote touch screen may recognize a pinch in/out operation if operated with 2 fingers, always use 1 finger to operate the remote touch screen in self-diagnostic mode. OK: Brightness changes according to remote touch screen operation.
HINT: When the switch illumination blinks, the remote touch (remote operation controller assembly) has stored a DTC. |
|
B | ![]() | REPLACE REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) |
|
4. | REPLACE NAVIGATION ECU |
(a) Replace the navigation ECU with a new or known good one.
Click here
(b) Check the malfunction disappears.
OK:
Malfunction disappears.
OK | ![]() | END (NAVIGATION ECU IS DEFECTIVE) |
NG | ![]() | REPLACE RADIO RECEIVER ASSEMBLY |
5. | CHECK CONNECTOR CONNECTION CONDITION |
(a) Check if the J154 remote touch (remote operation controller assembly) connector is securely connected.
OK:
The connector is securely connected.
NG | ![]() | SECURELY CONNECTED |
|
6. | CHECK HARNESS AND CONNECTOR (REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) POWER SOURCE) |
(a) Disconnect the J154 remote touch (remote operation controller assembly) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J154-10 (GND) - Body ground | Always | Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
J154-1 (+B) - Body ground | Always | 11 to 14 V |
J154-6 (ACC) - Body ground | Engine switch on (ACC) | 11 to 14 V |
OK | ![]() | REPLACE REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Navigation System: Black Screen
PROCEDURE 1. CHECK DISPLAY SETTING (a) Check that the display is not in screen off mode. OK: The display setting is not in screen off mode. NG CHANGE SCREEN TO SCREEN ON MODE
OK 2. CHECK IMAGE QUALITY SETTING (a) Check that the screen color quality can be ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Front Seatback Heater: Installation
INSTALLATION CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE 1. INSTALL FRONT SEATBACK HEATER ASSEMBLY (for Standard Seat T ...