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Home >> Toyota >> 2016 >> Highlander XLE, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (Automatic Transmission (UA80E) - Diagnostic Codes (2 Of 3)) >> Automatic Transaxle System >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message [11/2016 - ] >> Description

DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message [11/2016 - ]: Description

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The engine control unit and transmission control unit are located inside the ECM. The engine control unit intercommunicates with the transmission control unit using CAN communication.

If there is a problem in this intercommunication, the ECM stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
U010087 Lost Communication with ECM/PCM "A" Missing Message 1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
  1. The ignition switch is ON and battery voltage is 9.5 V or more.
  2. No intercommunication between engine control unit and transmission control unit
  3. 1.25 seconds or more
  4. 1-trip detection logic
 ECM Comes on DTC stored SAE Code: U0100
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