P1683

DESCRIPTION
This diagnostic test applies to internal microprocessor integrity conditions within the control module. This diagnostic test also addresses if the control module is not programmed. The following diagnostic trouble codes (DTCs) are diagnosed in this DTC table:

IMPORTANT: The DTCs listed below, are not applicable to all vehicles.
^ DTC P0601
^ DTC P0602
^ DTC P1683

DIAGNOSTIC AIDS
For complete details on programming the PCM, refer to Service Programming System (SPS) Description.

TEST DESCRIPTION

Steps 1-7:

The numbers below refer to the step numbers on the diagnostic table.
2. A DTC P0602 indicates the PCM is not programmed
4. Attempt to program the PCM. If the PCM fails to program a second time, replace the PCM.