Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Check Mode Procedure

HINT:

• DTCs can be detected more sensitively in check mode than in normal diagnosis mode.
• Perform check mode inspection when a malfunction in a squib circuit is suspected even after the normal system code is output through normal diagnosis mode inspection.

Dtc Check / Clear

DTC CHECK / CLEAR DTC CHECK (a) Turn the engine switch off. (b) Connect the Techstream to the DLC3. (c) Turn the engine switch on (IG), and wait for at least 60 seconds. (d) Turn the Techstream on. (e ...

Data List / Active Test

DATA LIST / ACTIVE TEST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-int ...

Other materials:

Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Immobiliser System: Short to GND in Immobiliser System Power Source Circuit (B278A)
DESCRIPTION When there is a short to GND in the power supply for the transponder key amplifier of the engine switch, the certification ECU (smart key ECU assembly) stores this DTC. DTC No. Detection Item DTC Detection Condition Trouble Area Note B278A Short to GND in Immobiliser Sys ...

Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Windshield Deicer System: Data List / Active Test
DATA LIST / ACTIVE TEST ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts o ...