Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT STOP LIGHT SWITCH ASSEMBLY
| (a) Disconnect the A55 stop light switch assembly connector. |
|
(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A55-1 (B) - A55-3 (GND) | Always | 11 to 14 V |
| A55-5 (B) - A55-3 (GND) | Engine switch on (IG) | 11 to 14 V |
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A55-3 (GND) - Body ground | Always | Below 1 Ω |
If the result is not as specified, repair or replace the wire harness or connector.
| (c) Reconnect the A55 stop light switch assembly connector. |
|
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A55-2 (L) - A55-3 (GND) | Brake pedal not depressed | Below 1 V |
| A55-2 (L) - A55-3 (GND) | Brake pedal depressed | 11 to 14 V |
| A55-4 (L) - A55-3 (GND) | Engine switch on (IG), brake pedal not depressed | 11 to 14 V |
| A55-4 (L) - A55-3 (GND) | Engine switch on (IG), brake pedal depressed | Below 1 V |
If the result is not as specified, replace the stop light switch assembly.
Components
COMPONENTS ILLUSTRATION *1 STOP LIGHT SWITCH ASSEMBLY - - N*m (kgf*cm, ft.*lbf): Specified torque - - ...
Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during stop ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Dynamic Torque Control Awd System: Engine Circuit Malfunction (C1280)
DESCRIPTION If a malfunction in the ECM circuit is detected, the 4WD ECU assembly stores this DTC. DTC No. Detection Item DTC Detection Condition Trouble Area C1280 Engine Circuit Malfunction When the following continues for 5 seconds or more:
Communication with engine control EC ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Window Control System: Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Lane Control System Pre-collision Sys ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
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- Instrument cluster
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- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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