DTC P0700: TCM Controller DTC Present: Testing

This DTC is an indicator that a Trans DTC has previously been set. A code may not currently be present in the TCM if a Trans repair was made. A DTC was registered in the Transmission Control Module. With the DRBIII®, go to the TCM and read codes. If after reading transmission DTCs there are no codes in the TCM, this code can be erased from the PCM. See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.