Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Turn Signal Switch Circuit
DESCRIPTION
The combination meter assembly receives the turn signal switch information and controls the turn signal lights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
PROCEDURE
| 1. | READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Combination Meter / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Combination Meter > Data List| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Turn Signal Switch (Right) | Turn signal switch (right) signal | OFF or ON | OFF: Turn signal switch not in right turn position ON: Turn signal switch in right turn position | - |
| Turn Signal Switch (Left) | Turn signal switch (left) signal | OFF or ON | OFF: Turn signal switch not in left turn position ON: Turn signal switch in left turn position | - |
| Turn Switch Signal (Full Turn) | Turn signal switch (full turn) signal | OFF or ON | OFF: Turn signal switch not in left or right turn position ON: Turn signal switch in left or right turn position | - |
| Tester Display |
|---|
| Turn Signal Switch (Right) |
| Turn Signal Switch (Left) |
| Turn Switch Signal (Full Turn) |
OK:
Normal conditions listed above are displayed.
| OK | .gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
.gif)
| 2. | INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY |
(a) Remove the headlight dimmer switch assembly.
Click here .gif)
(b) Inspect the headlight dimmer switch assembly.
Click here
| NG | | REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY |
|
| 3. | CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH ASSEMBLY - COMBINATION METER ASSEMBLY AND BODY GROUND) |
(a) Disconnect the J11 combination meter assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J28-12 (TR) - J11-3 (ER) | Always | Below 1 Ω |
| J28-11 (TL) - J11-4 (EL) | Always | Below 1 Ω |
| J28-13 (CR) - J11-8 (SW) | Always | Below 1 Ω |
| J28-12 (TR) or J11-3 (ER) - Body ground | Always | 10 kΩ or higher |
| J28-11 (TL) or J11-4 (EL) - Body ground | Always | 10 kΩ or higher |
| J28-13 (CR) or J11-8 (SW) - Body ground | Always | 10 kΩ or higher |
| J28-15 (EL) - Body ground | Always | Below 1 Ω |
| OK | | REPLACE COMBINATION METER ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
CAN Communication Failure (Message Registry) (U1000)
DESCRIPTION The No. 1 headlight ECU sub-assembly LH stores this DTC if it detects an internal malfunction related to the CAN communication system. for Multiple Beam Headlight DTC No. Detection It ...
Automatic High Beam System does not Operate or Operation Indicator does not Illuminate
DESCRIPTION The main body ECU (multiplex network body ECU) controls the automatic high beam system based on signals received from the forward recognition camera. WIRING DIAGRAM CAUTION / NOTICE / HIN ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Seat: Relay
On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE 1. INSPECT REAR SEAT HEATER RELAY (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 3 - 5 Battery voltage applied to terminals 1 and 2 B ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Rear Power Seat Control System(for Third Row): Power Seat Motor Circuit
DESCRIPTION When a switch of the fold seat switch assembly or No. 1 fold seat switch assembly is pushed, the fold seat control ECU receives a switch operation signal and operates each motor. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
When a fold seat control ECU (RH/LH seat) is replaced, it ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
0.0108