Engine Controls - Diagnostic Methods - (Hybrid): Adjustments Mercury Mariner II

Making Changes To The TCM Calibration

If the TCM does not complete the reflash after 2 consecutive attempts, follow the instructions listed below

1. If the TCM reprogramming aborts during the procedure

1. Reprogram the TCM again.
2. After the TCM reprogramming is successfully completed, clear the continuous DTCs in the PCM and the TCM.

2. If the TCM reprogramming aborts immediately after the start

1. Turn the key OFF.
2. Disconnect the PCM body/cowl connector, and leave it disconnected.
3. Turn the key ON.
4. Start the TCM reprogramming.
5. After the TCM reprogramming is successfully completed, turn the key OFF and connect the PCM body/cowl connector.
6. Clear any PCM and TCM DTCs that may have been stored during reprogramming.