Advanced Diagnostics

Advanced Diagnostics - DTC P062F: Powertrain Control Module (PCM) Internal Control Module Keep Alive Memory (KAM) Error






General Description
The powertrain control module (PCM) stores a vehicle identification number (VIN) in the keep alive memory and outputs the VIN according to commands from the HDS. The VIN for each vehicle is registered to the PCM using the HDS. The registered VIN is read by the CPU from the keep alive memory after the ignition switch is turned to ON (II) or after the Clear command is executed. If the VIN is not registered in the keep alive memory when the ignition switch is turned to ON (II) or when the Clear command is executed, it is detected as a VIN unregistered condition and a DTC is stored.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status






Enable Conditions






Malfunction Threshold
A malfunction is detected whenever the keep alive data retrieval and writing process is not completed normally.

Diagnosis Details

Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.

Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.