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2019
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Highlander XLE, FWD
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Repair and Diagnosis
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Different car
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Section 18 (Automatic Transmission (U660E) - Diagnostic Codes & Circuit Tests)
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Automatic Transaxle System
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DTC U0100: Lost Communication with ECM / PCM "A" [12/2013 - 11/2016]
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Typical Enabling Conditions
Typical Enabling Conditions
WARNING:
This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
Monitor runs whenever following DTCs not present
None
Battery Voltage
10.5 V or more
Ignition switch
ON
Starter
OFF