DESCRIPTION
The main body ECU (multiplex network body ECU) receives the following switch information:
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
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 / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
Dimmer SW | Dimmer switch high position signal | OFF or ON | OFF: Dimmer switch in low position ON: Dimmer switch in high or high flash position | - |
Passing Light SW | Dimmer switch high flash position (pass) signal | OFF or ON | OFF: Dimmer switch not in high flash position ON: Dimmer switch in high flash position | - |
Auto Light SW | Light control switch AUTO position signal | OFF or ON | OFF: Light control switch not in AUTO position ON: Light control switch in AUTO position | - |
Head Light SW (Head) | Light control switch head position signal | OFF or ON | OFF: Light control switch not in head position ON: Light control switch in head position | - |
Head Light SW (Tail) | Light control switch tail position signal | OFF or ON | OFF: Light control switch not in tail or head position ON: Light control switch in tail or head position | - |
Tester Display |
---|
Dimmer SW |
Passing Light SW |
Auto Light SW |
Head Light SW (Head) |
Head Light SW (Tail) |
OK:
Normal conditions listed above are displayed.
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. | INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY |
(a) Remove the headlight dimmer switch assembly.
Click here
(b) Inspect the headlight dimmer switch assembly.
Click here
NG | ![]() | REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY |
|
3. | CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) |
(a) Disconnect the J8 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J28-18 (T) - J8-22 (TAIL) | Always | Below 1 Ω |
J28-19 (H) - J8-12 (HEAD) | Always | Below 1 Ω |
J28-20 (A) - J8-8 (A) | Always | Below 1 Ω |
J28-14 (HU) - J8-24 (HU) | Always | Below 1 Ω |
J28-17 (HF) - J8-10 (HF) | Always | Below 1 Ω |
J28-18 (T) or J8-22 (TAIL) - Body ground | Always | 10 kΩ or higher |
J28-19 (H) or J8-12 (HEAD) - Body ground | Always | 10 kΩ or higher |
J28-20 (A) or J8-8 (A) - Body ground | Always | 10 kΩ or higher |
J28-14 (HU) or J8-24 (HU) - Body ground | Always | 10 kΩ or higher |
J28-17 (HF) or J8-10 (HF) - Body ground | Always | 10 kΩ or higher |
J28-15 (EL) - Body ground | Always | Below 1 Ω |
OK | ![]() | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Axle And Differential: Front Axle Hub Bolt
ComponentsCOMPONENTS ILLUSTRATION *1 FRONT AXLE HUB BOLT *2 FRONT DISC *3 FRONT DISC BRAKE CALIPER ASSEMBLY - - Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping" : N*m (kgf*cm, ft.*lbf) ● Non-reusable part Repl ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Automatic Transaxle System: Shift Solenoid "A" Circuit Short to Battery or Open (P075015)
DESCRIPTION Changing gears is performed by the ECM turning the shift solenoid valves SL1, SL2, SL3, SL4, SL5, S1 and S2 on and off. If an open or short occurs in any of the shift solenoid valve circuits, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be driven. I ...