For 1990-2009 cars only
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 diagnostic category. |
DTC Descriptor
DTC P0700: Transmission Control Module (TCM) Requested MIL IlluminationCircuit/System Description
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.
Conditions for Running the DTC
| • | The ignition is ON. |
| • | DTC P0700 runs continuously. |
Conditions for Setting the DTC
Serial Data communication from the TCM indicates a fault exists with the transmission.
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.
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Circuit/System Verification
- DTC P0700 is an informational DTC. If there are engine controls DTCs, diagnose those first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle. For diagnosis of TCM DTCs, refer to Diagnostic Trouble Code (DTC) List - Vehicle.
- Engine running, observe the DTC information with a scan tool. DTC P0700 should not set.
- Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame Records data.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
