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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 472 (Gateway System - Diagnosis) >> Circuit Inspection >> DTC B1294: Immobilizer ECU communication stop >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

This DTC is output when communication stops between the Transponder key ECU and the gateway ECU.

DTC DETECTION ITEM

DTC No. DTC Detecting Condition Trouble Area
B1294 No communication from transponder key ECU for more than 10 seconds.
  • Transponder key ECU
  • Wire harness