2010 Cadillac CTS Sedan AWD V6-3.6L Page 1633
P0700
DTC P0700
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each of the diagnostic category.
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
* The ignition is ON or the engine is operating.
* DTC P0700 runs continuously.
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 (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning)
Circuit/System Verification
Note: Correct any engine controls and communication DTCs before diagnosing TCM DTCs.
1. DTC P0700 is an informational DTC. If there are no engine controls or communication DTCs, refer to Diagnostic Trouble Code (DTC) List -
Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) for diagnosis of TCM DTCs.
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.
P0711
DTC P0711, P0712, or P0713
