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• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each of the diagnostic category. |
This diagnostic trouble code (DTC) indicates that an emission related transmission DTC has set in the transmission control module (TCM). The engine control module (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, and the ECM Freeze Frame/Failure Records data will display the engine operating conditions that were present when the transmission DTC was set. The TCM Freeze Frame/Failure records data is available from the DTC that was set in the TCM.
• | The ignition is ON or the engine is operating. |
• | DTC P0700 runs continuously. |
The ECM receives a serial data message from the TCM requesting the ECM to turn ON the MIL.
DTC P0700 is a Type A DTC.
DTC P0700 is a Type A DTC.
Communication codes, U-codes, as well as powertrain codes, P-codes, set in the TCM can cause the TCM to request DTC P0700 to be set in the ECM.
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
Note: Correct any other engine controls and communication DTCs before diagnosing TCM DTCs.
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
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