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Home >> Toyota >> 2012 >> Venza Limited, AWD >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Smart Key System (For Start Function) (Diagnostic Codes & Symptom Tests) >> SMART KEY SYSTEM (for Start Function) >> DTC U0100: Lost Communication with ECM / PCM "A" >> Description
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DTC U0100: Lost Communication with ECM / PCM "A": Description

The power management control ECU receives shift position information from 2 sources. It receives a shift position P signal from the shift lock control unit assembly via a direct line, and shift position information from the ECM via CAN. If the information from these 2 sources is inconsistent, this DTC will be stored.

DTC No. DTC Detection Condition Trouble Area
U0100 Shift position information from ECM (via CAN) and shift lock control unit assembly (direct line) is inconsistent
  • CAN communication system
  • Power management control ECU
  • ECM
  • Wire harness or connector