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 |
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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) |
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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 touch screen operation.
HINT: When the switch illumination blinks, the remote touch (remote operation controller assembly) has stored a DTC. |
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B | ![]() | REPLACE REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) |
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4. | REPLACE NAVIGATION ECU |
(a) Replace the navigation ECU with a new one.
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(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 |
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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:
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(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) 2016-2023 Repair Manual > Rear Power Seat Control System(for Second Row): Power Source Circuit
DESCRIPTION Power is supplied to the fold seat control ECU through the ECU-DCC NO. 2, P/SEAT R/R*1, P/SEAT R/L*2 and ECU-IG1 NO. 4 fuses.
*1: for Rear Right Seat
*2: for Rear Left Seat
WIRING DIAGRAM CAUTION / NOTICE / HINT HINT: Inspect the fuses for circuits related to this system before ...
Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Meter / Gauge System: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the meter / gauge system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS
NEXT 3. INSPECT BATTERY VOLTAGE ...