DESCRIPTION
Power is supplied to the radio receiver assembly and steering pad switch assembly illumination when the light control switch is in the tail or head position.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
PROCEDURE
1. | CHECK ILLUMINATION |
(a) Check if the illumination for the radio receiver assembly, steering pad switch assembly, heater control switch or others (hazard switch, transmission control switch, etc.) comes on when the light control switch is turned to the head or tail position.
Result | Proceed to |
---|---|
Illumination comes on for all components except steering pad switch assembly. | A |
Illumination comes on for all components except radio receiver assembly. | B |
No illumination comes on (radio receiver assembly, hazard switch, heater control switch, etc.). | C |
B | ![]() | GO TO STEP 5 |
C | ![]() | GO TO LIGHTING SYSTEM |
|
2. | CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL) |
(a) Disconnect the J29 spiral cable sub-assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
J29-13 (IL+2) - Body ground | Light control switch in tail or head position | 11 to 14 V |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. | INSPECT STEERING PAD SWITCH ASSEMBLY |
(a) Remove the steering pad switch assembly.
Click here
(b) Inspect the steering pad switch assembly.
Click here
NG | ![]() | REPLACE STEERING PAD SWITCH ASSEMBLY |
|
4. | INSPECT SPIRAL CABLE SUB-ASSEMBLY |
(a) Remove the spiral cable sub-assembly.
Click here
(b) Inspect the spiral cable sub-assembly.
Click here
OK | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - RADIO RECEIVER ASSEMBLY, COMBINATION METER ASSEMBLY) |
NG | ![]() | REPLACE SPIRAL CABLE SUB-ASSEMBLY |
5. | CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL) |
(a) Disconnect the J151 radio receiver assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
J151-15 (ILL+) - Body ground | Light control switch in tail or head position | 11 to 14 V |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
6. | CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY) |
(a) Disconnect the J151 radio receiver assembly connector.
(b) Disconnect the J10 combination meter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J151-16 (ILL-) - J10-39 (ILL-) | Always | Below 1 Ω |
J151-16 (ILL-) or J10-39 (ILL-) - Body ground | Always | 10 kΩ or higher |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual > Opening, closing and locking the doors: Power back door
The power back door can be locked/unlocked and opened/closed by the
following
procedures.
Locking and unlocking the power back door from the outside
Smart access system with push-button start
Carry the electronic key to enable
this function.
Locks all the doors
Check that the door is se ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Smart Access System With Push-button Start (for Entry Function): Operation Check
OPERATION CHECK CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) OPERATION NOTICE: Make sure that the smart access system with push-button start (for Entry Function) has not been canceled before performing this inspection. (a) Check the entry unlock function (driver door, front ...