Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Terminals Of Ecu
TERMINALS OF ECU
HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY)
(a) Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| K1-1 (B) - Body ground | GR - Body ground | Battery | Always | 11 to 14 V |
| K1-2 (IG) - Body ground | B - Body ground | Engine switch signal | Engine switch off | Below 1 V |
| Engine switch on (IG) | 11 to 14 V | |||
| K1-4 (MPX1) - Body ground | B - Body ground | CAN communication line | - | - |
| K1-5 (MPX2) - Body ground | W - Body ground | CAN communication line | - | - |
| K1-6 (ES) - Body ground | BR - Body ground | Ground | Always | Below 1 Ω |
| K1-7 (TX+) - Body ground | SB - Body ground | Local bus communication line | - | - |
| K1-8 (TX-) - Body ground | BE - Body ground | Local bus communication line | - | - |
| K1-15 (E) - Body ground | R - Body ground | Ground | Always | Below 1 Ω |
| K1-16 (SW1) - K1-6 (ES) | LG - BR | Headup display switch assembly signal | Engine switch on (IG), headup display switch assembly not pushed | 4 to 6 V |
| Engine switch on (IG), headup display switch assembly pushed | Below 1 V |
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptom are listed in order of ...
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (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 / T ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Can Communication System: Check Bus 1 Lines for Short Circuit
DESCRIPTION There may be a short circuit between the bus 1 main lines and/or bus 1 branch lines when the resistance between terminals 23 (CA1H) and 8 (CA1L) of the network gateway ECU is below 54 Ω. Symptom Trouble Area Resistance between terminals 23 (CA1H) and 8 (CA1L) of network gateway ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Smart Access System With Push-button Start (for Entry Function): Entry Interior Alarm does not Sound
DESCRIPTION The smart access system with push-button start (for Entry Function) uses the buzzer in the combination meter assembly (meter ECU) to perform various vehicle interior warnings. When the conditions of each warning are met, the certification ECU (smart key ECU assembly) sends a buzzer activ ...
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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