P0602

Circuit Description
The powertrain control module (PCM) used in this vehicle utilizes an electrically erasable programmable read-only memory (EEPROM). The EEPROM contains the program information and the calibrations required for powertrain diagnostics operation.
Unlike the PROM used in past applications, the EEPROM is not replaceable. When the PCM is replaced or a calibration update is required, the PCM must be programmed using approved Techline equipment.

Conditions for Setting the DTC
The PCM does not contain the correct program required to operate the vehicle.

Action Taken When the DTC Sets
The PCM stores the conditions which were present when the DTC set as Fail Records data only.

Conditions for Clearing the MIL/DTC
^ A history DTC clears after 40 consecutive warm-up cycles have occurred without a malfunction.
^ DTC may be cleared by using the scan tool Clear Info function or by disconnecting the PCM battery feed.

Test Description
Number(s) below refer to the step number(s) on the Diagnostic Table.
3. This vehicle is equipped with a PCM which utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). When the PCM is being replaced, the new PCM must be programmed.