Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Turn Signal Light Circuit
DESCRIPTION
The combination meter assembly controls the illumination and turning off of the rear turn signal lights.
WIRING DIAGRAM
PROCEDURE
| 1. | CHECK OPERATION (REAR TURN SIGNAL LIGHTS) |
(a) Check the operation of the rear turn signal lights.
| Result | Proceed to |
|---|---|
| LH side rear turn signal light does not illuminate | A |
| RH side rear turn signal light does not illuminate | B |
| B | .gif) | GO TO STEP 5 |
|
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| 2. | CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY LH - REAR LIGHT ASSEMBLY LH) |
(a) Disconnect the S31 rear combination light assembly LH connector.
(b) Disconnect the Z21 rear light assembly LH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| S31-5 (TRN1) - Z21-4 (TRN4) | Always | Below 1 Ω |
| S31-5 (TRN1) or Z21-4 (TRN4) - Body ground | Always | 10 kΩ or higher |
| S31-6 (TRN2) - Z21-5 (TRN3) | Always | Below 1 Ω |
| S31-6 (TRN2) or Z21-5 (TRN3) - Body ground | Always | 10 kΩ or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 3. | CHECK REAR COMBINATION LIGHT ASSEMBLY LH |
(a) Interchange the rear combination light assembly LH with RH and connect the connectors.
w/ Rear No. 2 Seat: Click here .gif)
w/o Rear No. 2 Seat: Click here
|
| 4. | CHECK OPERATION (REAR TURN SIGNAL LIGHTS) |
(a) Check that the rear turn signal light of the rear combination light assembly LH illuminates.
OK:
The rear turn signal light of the rear combination light assembly LH illuminates.
| OK | | REPLACE REAR LIGHT ASSEMBLY LH |
| NG | | REPLACE REAR COMBINATION LIGHT ASSEMBLY LH |
| 5. | CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY RH - REAR LIGHT ASSEMBLY RH) |
(a) Disconnect the S33 rear combination light assembly RH connector.
(b) Disconnect the Z20 rear light assembly RH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| S33-5 (TRN1) - Z20-4 (TRN4) | Always | Below 1 Ω |
| S33-5 (TRN1) or Z20-4 (TRN4) - Body ground | Always | 10 kΩ or higher |
| S33-6 (TRN2) - Z20-5 (TRN3) | Always | Below 1 Ω |
| S33-6 (TRN2) or Z20-5 (TRN3) - Body ground | Always | 10 kΩ or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 6. | CHECK REAR COMBINATION LIGHT ASSEMBLY RH |
(a) Interchange the rear combination light assembly RH with LH and connect the connectors.
w/ Rear No. 2 Seat: Click here
w/o Rear No. 2 Seat: Click here
|
| 7. | CHECK OPERATION (REAR TURN SIGNAL LIGHTS) |
(a) Check that the rear turn signal light of the rear combination light assembly RH illuminates.
OK:
The rear turn signal light of the rear combination light assembly RH illuminates.
| OK | | REPLACE REAR LIGHT ASSEMBLY RH |
| NG | | REPLACE REAR COMBINATION LIGHT ASSEMBLY RH |
Front Fog Light Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) controls the front fog lights. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
Inspect the fuses for circuits related to this system befor ...
Hazard Warning Switch Circuit
DESCRIPTION The combination meter assembly receives the hazard warning signal switch on signal and controls the operation of the hazard warning lights. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Owners Manual > Do-it-yourself
maintenance: Headlight aim (vehicles with single-beam headlights)
Vertical movement adjusting bolts
Adjustment bolt A
Adjustment bolt B
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1. Make sure the vehicle has a full tank of gasoline and the area around the
headlight is not deformed.
2. Park the vehicle on level ground.
3. Sit in the driver's seat.
4. Bounce ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Rear Power Seat Control System(for Second Row): Fold Seat Switch Circuit
DESCRIPTION When the fold seat switch assembly is operated, a switch operation signal is sent to the fold seat control ECU. According to the signal received, the fold seat control ECU operates the fold motor to perform a fold or return operation of the rear seatback. WIRING DIAGRAM PROCEDURE 1. ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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