For 1990-2009 cars only
Circuit Description
The transmission control module (TCM) uses the controller area network (CAN) to communicate with the engine control module (ECM). If the ECM detects that the TCM has set a non-emission related transmission code and is requesting the service vehicle soon (SVS) message on the driver information center (DIC), DTC P1700 sets.
DTC Description
This diagnostic procedure supports the following DTC:
DTC P1700 Transmission Control Module (TCM) Requested MIL Illumination
Conditions for Running the DTC
| • | The ignition is ON. |
| • | The TCM has determined that a non-emissions related malfunction exists. |
Conditions for Setting the DTC
The ECM is requesting an SVS message on the DIC.
Action Taken When the DTC Sets
| • | The control module stores the DTC information into memory when the diagnostic runs and fails. |
| • | The malfunction indicator lamp (MIL) will not illuminate. |
| • | The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Failure Records. |
| • | The driver information center, if equipped, may display a message. |
Conditions for Clearing the DTC
| • | A current DTC Last Test Failed clears when the diagnostic runs and passes. |
| • | A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic. |
| • | Clear the DTC with a scan tool. |
Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
