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Home >> Toyota >> 2012 >> Prius Two >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Electronic A/T Shift Lever System (Except Plug-In) (Diagnostic Codes & Circuit Tests) >> Electronic Shift Lever System >> DTC C2309: Open in B+ Circuit >> Description

DTC C2309: Open in B+ Circuit: Description

Battery voltage will be applied to the +B terminal when the power switch is turned on (IG). When a +B terminal voltage malfunction is detected, the transmission control ECU stores this DTC.

DTC No. DTC Detection Condition Trouble Area
C2309 With the power switch on (IG), voltage of transmission control ECU terminal +B is 3 V or less for 1 second or more.
  • Transmission control ECU assembly
  • IGCT fuse
  • IGCT NO. 2 fuse
  • Auxiliary battery
  • Wire harness or connector
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