Diagnostic Instructions
| • | 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. |
DTC Descriptor
DTC P0700: Transmission Control Module (TCM) Requested MIL IlluminationCircuit/System Description
The transmission control module (TCM) uses the controller area network (CAN) to signal the engine control module (ECM) that the TCM is requesting malfunction indicator lamp (MIL) illumination. This happens when the TCM has determined that a failure that affects emissions has occurred in transmission control system. When the ECM receives the correct message from the TCM, DTC P0700 will set.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The TCM is requesting MIL illumination.
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
DTC P0700 can not be cleared from the ECM until the related TCM codes have been cleared.
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Refer to Diagnostic Trouble Code (DTC) List - Vehicle to correct any transmission DTCs.
