FAIL-SAFE CHART
MALFUNCTION DETECTION
(a) Operation when malfunction is detected
Content | Operation | |
---|---|---|
Heater failure | Overcurrent detection of drive element | Heater output off |
Overheating detection of drive element | Heater output off | |
Power failure | Low-voltage detection | Heater output off |
Over-voltage detection | Heater output off | |
Heater OFF timer | 30 minutes after heated steering wheel system is turned on | Heater output off |
(b) Malfunction detection conditions
(1) When an open or short in the steering wheel heater unit thermistor continues for 2 seconds or more.
(2) When the steering heater switch is pressed continuously for 10 seconds or more.
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Lighting System (w/o Automatic Headlight Beam Level Control System): Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the Techstream to read the Data List allows the values or states of ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Back Door System (w/ Outside Door Control Switch): Back Door Closer Switch Malfunction (B2251)
DESCRIPTION The multiplex network door ECU receives signals from the latch switch, position switch, pawl switch and back door courtesy switch, which are built into the back door lock assembly. Based on these signals, the latch position of the back door lock assembly is determined. DTC No. Detec ...