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Home >> Lexus >> 2020 >> UX 200 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 31 (Smart Access System W/ Push-Button Start (Start Function) (Diagnostic Codes & Symptom Tests (1 Of 2)) (Hybrid)) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function, HV Model) >> DTC B2275: STSW Monitor Malfunction [10/2018 - ] >> Description

DTC B2275: STSW Monitor Malfunction [10/2018 - ]: Description

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This DTC is stored when a malfunction is detected in the starter circuit inside the certification ECU (smart key ECU assembly).

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B2275 STSW Monitor Malfunction Certification ECU (smart key ECU assembly) internal HV activation request output circuit malfunction or external circuit malfunction (1-trip detection logic*)
  • Certification ECU (smart key ECU assembly)
  • Hybrid vehicle control ECU
  • Wire harness or connector
 DTC Output Confirmation Operation: 
  1. Turn the power switch on (IG) and wait 10 seconds or more, then start the hybrid control system 3 times.
  1. *: Only detected while a malfunction is present and the power switch is on (IG).
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED

Vehicle Condition when Malfunction Detected Fail-safe Function when Malfunction Detected
  • The power source mode changes to on (READY) even though the hybrid control system is not started.
  • The power source mode does not change to on (READY) even though the hybrid control system is started.
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RELATED DATA LIST AND ACTIVE TEST ITEMS

DTC No. Data List and Active Test
B2275 Power Source Control 
  • Starter Request Signal
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