Caterpillar 3406E — Replacing the ECM with the Use of the ECM Replacement Feature
Repair & overhaul · Engine Control Module (ECM)
For the Caterpillar 3406E, from the Caterpillar service manual.
Applies to: Caterpillar 3406E
Before you start
- On initial powerup of a new ECM, the Rating Number parameter must be programmed to avoid activating a 253-02 Check Customer Or System Parameters.
Procedure
- Ensure that the ECM is the problem by first connecting a test ECM. Hang the test ECM on the side of the engine.
- If the test ECM repairs the problem, reconnect the suspect ECM. Verify that the problem returns.
- Select the ECM Replacement Feature under the Service/Copy Configuration menu and load parameters from the failed ECM.
- Temporarily connect the new ECM by connecting both ECM connectors. Do not mount the ECM on the engine yet.
- Flash program the personality module into the new ECM if not already installed.
- Use the ECM replacement feature on Cat ET in order to program the new ECM.
- Enter the value for the Rating Number parameter into the new ECM.
- Check for active codes. Program any required parameters that have not been programmed.
- If 22-13 is not active, install the new ECM. Otherwise, perform a timing calibration first.
Tools required
- Caterpillar Electronic Technician (Cat ET) Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Caterpillar 3406E →
Source: Caterpillar service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.