TERMINALS OF ECU
STEERING WHEEL HEATER CONTROL ASSEMBLY
HINT:
Perform the inspection from the harness side with the connectors connected.
(a) Measure the voltage or resistance according to the value(s) in the table below.
Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
---|---|---|---|
A-4 (IG) - Body ground | IG power supply | Engine switch on (IG) | 11 to 14 V |
A-3 (SW) - Body ground | Steering heater switch (Integration control&panel assembly) input signal | Engine switch on (IG), Steering heater switch (Integration control&panel assembly) pressed and held | 11 to 14 V |
A-2 (LED) - Body ground | LED output signal | Engine switch on (IG), Heated steering wheel system operating | Below 3 V |
A-1 (GND) - Body ground | Ground | Always | Below 1 Ω |
B-5 (SH1) - Body ground | Heater output signal | Engine switch on (IG), Heated steering wheel system operating | 11 to 14 V*1 |
B-3 (TH1) - Body ground | Thermistor input signal | Engine switch on (IG), Heated steering wheel system operating on at 0 to 40°C (32 to 104°F) | 2.5 to 4.8 V*2 |
B-2 (TH2) - Body ground | Thermistor ground | Engine switch on (IG), Heated steering wheel system operating | Below 1 V |
B-1 (SH2) - Body ground | Heater ground | Engine switch on (IG), Heated steering wheel system operating | Below 1 V |
HINT:
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Navigation System: Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination Meter
DESCRIPTION The stereo component amplifier assembly receives a vehicle speed signal from the combination meter assembly to control the ASL function. HINT:
A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter assembly. The signal is changed to a pulse signal at ...
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Power Mirror Control System (w/o Memory): How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the power mirror control system (w/o Memory).
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS HINT:
In troubleshooting, confirm th ...