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

Procedure A: ECM Reprogramming

PROCEDURE A: ECM REPROGRAMMING

Before beginning reprogramming, use CONSULT-II to make sure there are no DTCs stored in the ECM.

Repairs for stored DTCs must be done before performing the ECM reprogramming. Use ASIST for DTC diagnostic and repair information.

Repairs for stored DTCs are not related to this campaign.

Reprogramming should be performed by an OBD-II Certified technician





1. Compare your vehicle's ECM P/N to those shown under Current ECM P/N in Chart A.

2. If your vehicle's current ECM P/N matches one of the Current ECM P/N's in Chart A:

^ Perform ECM reprogramming. (Detailed steps of ECM reprogramming are in Appendix B).

^ Make sure to connect a battery charger to the vehicle battery and set it to a low charge rate (trickle charge) during the ECM reprogramming.

3. If your vehicle's ECM P/N does not match one of the Current ECM P/N's in Chart A:

^ This campaign may not apply or has already been done on this vehicle.

^ Recheck Service Comm (campaign ID PB023) to confirm the vehicle you're working on is affected by this campaign.