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Home >> Toyota >> 2009 >> RAV4 Base, 2.5 F, AWD >> Repair and Diagnosis >> Engine Mechanical >> Starter >> Starting System (2AR-FE) >> Smart Key System >> DTC B2278 Engine Switch Circuit Malfunction >> Description

DTC B2278 Engine Switch Circuit Malfunction: Description

This DTC is stored when 1) a malfunction is detected between the main body ECU and engine switch; or 2) either of the switches inside the engine switch is malfunctioning.

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
B2278 Communication is abnormal between the main body ECU and engine switch or the engine switch is defective.
  • Main body ECU
  • Engine switch
  • Harness or connector
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