LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2014 >> Highlander XLE, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 40 (Automatic Transmission (U760E) - Diagnostic Codes) >> Automatic Transaxle System >> DTC U0100: Lost Communication with ECM / PCM "A" [12/2013 - ] >> Description

DTC U0100: Lost Communication with ECM / PCM "A" [12/2013 - ]: Description

WARNING: This page is about a different variant/trim than selected.

The engine control unit and transmission control unit are located inside the ECM. The engine control unit intercommunicates with the transmission control ECU with the Controller Area Network (CAN).

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

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
U0100 Lost Communication with ECM / PCM "A"
  • Following conditions are met for 1.25 seconds (1 trip detection logic):
    1. Ignition switch ON
    2. Battery voltage is 10.5 V or more
    3. No intercommunication between engine control ECU and transmission control ECU
 ECM Comes on DTC stored
scientia non olet · About LEMON Manuals