Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Resetting The Keep Alive Memory (KAM)

RESETTING THE KEEP ALIVE MEMORY (KAM)

Description
Resetting the KAM returns the powertrain control module (PCM) memory to its default setting. Adaptive learning contents such as idle speed, refueling event, and fuel trim are included. To clear the continuous diagnostic trouble codes (DTCs) in the PCM and have it reset the emissions monitors information, is also part of a KAM reset. Refer to Clear The Continuous Diagnostic Trouble Codes (DTCs) And Reset The Emission Monitors Information In The Powertrain Control Module (PCM). Both can be useful in post repair retest. Clear The Continuous Diagnostic Trouble Codes (DTCs) and Reset the Emission Monitors Information In The Powertrain Control Modu

After the KAM has been reset, the vehicle may exhibit certain driveability concerns. It is necessary to allow the engine to idle at normal operating temperature with the air conditioning (A/C) OFF for 2 minutes. To maintain the necessary idle time, enter the engine running diagnostic mode. Refer to Diagnostic Modes, Engine Running Diagnostic Mode. Then drive the vehicle to allow the PCM to learn the values for optimum driveability and performance. Diagnostic Modes

This function may not be supported by all scan tools. Refer to the scan tool manufacturer's instruction manual.