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Home >> Toyota >> 2012 >> Sienna SE >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Engine Immobiliser System (W/O Smart Key) (Diagnostic Codes & Circuit Tests) >> ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) >> DTC B2784: Antenna Coil Open / Short >> Description

DTC B2784: Antenna Coil Open / Short: Description

The transponder key coil is built into the transponder key amplifier and receives a key code signal from the transponder chip in the key. This signal is amplified by the amplifier, then it is output to the transponder key ECU.

DTC No. DTC Detection Condition Trouble Area
B2784 Antenna coil is open/shorted.
  • Wire harness or connector
  • Transponder key amplifier
  • Transponder key ECU
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