Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Main Switch Circuit
DESCRIPTION
The headup display switch assembly (integration control and panel assembly) and headup display (meter mirror sub-assembly) are connected via direct line. The headup display (meter mirror sub-assembly) can be turned off and on by operating the headup display switch assembly (integration control and panel assembly).
WIRING DIAGRAM
PROCEDURE
| 1. | READ VALUE USING TECHSTREAM (MAIN SWITCH) |
(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 / Head Up Display / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Head Up Display > Data List| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Main Switch | Headup display switch assembly | OFF or ON | OFF: Switch released ON: Switch pushed | - |
| Tester Display |
|---|
| Main Switch |
OK:
Headup display switch assembly condition displayed on the Techstream changes with the actual switch operation.
| OK | .gif) | REPLACE HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY) |
|
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| 2. | INSPECT HEADUP DISPLAY SWITCH ASSEMBLY (INTEGRATION CONTROL AND PANEL ASSEMBLY) |
(a) Remove the integration control and panel assembly.
Click here .gif)
(b) Inspect the integration control and panel assembly.
Click here
| NG | | REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY |
|
| 3. | CHECK HARNESS AND CONNECTOR (HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY) - INTEGRATION CONTROL AND PANEL ASSEMBLY) |
(a) Disconnect the K1 headup display (meter mirror sub-assembly) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| K1-16 (SW1) - J83-5 (ILU) | Always | Below 1 Ω |
| K1-15 (E) - J83-15 (CH) | Always | Below 1 Ω |
| K1-16 (SW1) or J83-5 (ILU) - Body ground | Always | 10 kΩ or higher |
| K1-15 (E) or J83-15 (CH) - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY) |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lost Communication with ECM / PCM "A" (U0100,U0142,U0163,U023A)
DESCRIPTION The headup display (meter mirror sub-assembly) communicates with the ECM, main body ECU (multiplex network body ECU), radio receiver assembly and forward recognition camera via CAN communi ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Shift Lever: On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. SECURE VEHICLE (a) Fully apply the parking brake and chock a wheel. CAUTION:
Make sure to apply the parking brake and chock a wheel before performing this procedure.
If the vehicle is not secure and the shift lever is moved to N, the vehicle may suddenly move, ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Vehicle Stability Control System: Left Rear Wheel Speed Sensor Signal Stuck Low (C050C23)
DESCRIPTION Refer to DTC C050C1F. Click here DTC No. Detection Item DTC Detection Condition Trouble Area C050C23 Left Rear Wheel Speed Sensor Signal Stuck Low Any of the following is detected:
When the +BS terminal voltage is 17.4 V or less at a vehicle speed of 10 km/h (6 mph) ...
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
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