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Diagnostic Trouble Code: 021
Diagnostic Trouble Code Name: Rear Defrost Request Switch Circuit
Vehicle Make: Chevrolet
Vehicle Model: Epica (V250)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Transmission Control Module Requested MIL Illumination
Possible Sensor Faults
TCM
Possible Related Diagnostic Trouble Codes
DTC P0700
Circuit / System Description
The diagnostic trouble code (DTC) indicates that an emission related transmission DTC set in the transmission control module (TCM). The engine control module (ECM) receives the TCM information over the serial data circuit. The ECM turns ON the malfunction indicator lamp (MIL) when the TCM sends a message over the serial data circuit requesting MIL illumination. The DTC information for the ECM will only display DTC?P0700, but the Freeze Frame/Failure Records data will display the transmission DTC that set.
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