PRE-RELEASE
DTC P0700
| DTC P0700 |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
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| DTC Descriptor |
DTC P0700
Transmission Control Module (TCM) Requested MIL Illumination
| 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.
| Conditions for Running the DTC |
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The ignition is ON or engine is running.
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DTC P0700 runs continuously.
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| Conditions for Setting the DTC |
The ECM receives a serial data message from the TCM requesting the ECM to turn ON the MIL lamp.
| Action Taken When the DTC Sets |
DTC P0700 is a Type A DTC.
| Conditions for Clearing the MIL/DTC |
DTC P0700 is a Type A DTC.
| Diagnostic Aids |
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.
| Reference Information |
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References
| Circuit/System Verification |
| 1. |
DTC P0700 is an informational diagnostic trouble code. If there are no engine controls or communication DTCs, refer to Diagnostic Trouble Code (DTC) List - Vehicle for diagnosis of TCM DTCs. |
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| 2. |
Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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