Do not disconnect the battery to clear continuous memory codes. This will erase the Keep Alive Memory (KAM) information which may cause a driveability concern.
- Run the Key On Engine Off Self-Test.
When the service codes begin to be displayed, deactivate the Self-Test as follows:
- STAR tester: unlatch the center button to the UP position.
- Analog voltmeter and MIL: remove the jumper wire from between the Self-Test Input (STI) connector and the signal return pin of the Self-Test connector.
- The continuous memory codes will be erased from the ECU memory.
KEEP ALIVE MEMORY (KAM)
The computer control module stores information regarding vehicle operating conditions and uses this information to compensate for component tolerances. Whenever an emission related component is replaced, the Keep Alive Memory (KAM) should be cleared to erase the information stored by the control module from the original component.
To clear KAM, disconnect the negative battery cable for at least five minutes. After the KAM has been cleared, the vehicle may exhibit certain driveability concerns. If this is the case, it will be necessary to drive the vehicle at least 10 miles (16 km) for the computer to relearn the values for optimum driveability and performance.