Frontier 2WD L4-2.5L (QR25DE) (2005)
^ Compare your vehicle's ECM P/N to the one shown under Current ECM P/N in Chart A, above.
^ If it's in that column, this bulletin applies.
A. If your vehicle's ECM P/N matches the Current ECM P/N in the chart above:
^
This bulletin applies. Go to Step B, Replace the Exhaust Manifold Catalyst below.
B. If your vehicle's ECM P/N does not match the Current ECM P/N in the chart above:
^
This bulletin does not apply. Go back to ASIST for further diagnostic and repair information.
Step B: Replace the Exhaust Manifold Catalyst
1. Replace the Exhaust Manifold Catalyst with the one from the Parts Information section of this bulletin. Reference the EXHAUST MANIFOLD AND
THREE WAY CATALYST Removal and Installation chapter in the EM section of the appropriate Electronic Service Manual if necessary.
NOTE:
The manifold must be replaced before ECM reprogramming.
2. Go to Step C: ECM REPROGRAMMING
Step C: ECM REPROGRAMMING
Vehicle ECM Reprogramming Overview
^ There are four basic steps (tasks) under Step C:
1. Download reprogramming data (transfer it) from ASIST into CONSULT-II.
2. "Preparation" steps before reprogramming.
3. Reprogram the vehicle ECM.
4. ECM Reprogramming "Wrap-up".
^ For those familiar with ECM Reprogramming, please review the following steps starting below and use them as a Quick Reference for ECM
reprogramming.
Step One: Download (Transfer) Data From ASIST Into CONSULT-II