Tech Tip: Nissan MIL On, DTC P0603 – ECM Power Supply
If you have a vehicle with the MIL on that has a DTC P0603 stored in the ECM, perform the diagnostic steps in this bulletin first.
Tech Tip: Nissan DTC P0420 Stored in ECM
If you confirm DTC P0420 (Catalyst System Efficiency Below Threshold) is stored in the ECM, determine if this bulletin applies by checking the ECM part number.
Tech Tip: 2005-06 Ford Escape/Mercury Mariner ECM Problem
Vehicle owners may experience misfire and poor engine performance. Fault codes may be set for coil-on-plug (COP) or Powertrain Control Module (PCM). No change in performance after replacing components or repeated failure of replacement components.
ECMs Rarely Fail By Themselves
CARDONE offers technical advice on the causes of EMC failures.
Tech Tip: ECM Replacement Service Procedure for Nissan Vehicles
If you confirm that the Electronic Control Module (ECM) needs to be replaced on a 2000 MY or later Nissan vehicle, or a 1999 MY vehicle Frontier (D22), Quest (V41) or Pathfinder (R50) from VIN JN8AR07**XW350101, complete the actions listed in this Tech Tip.
Nissan Tech Tip: ECM Replacement Service Procedure
If you confirm that the Electronic Control Module (ECM) needs to be replaced on a 2000 MY or later Nissan vehicle, or a 1999 MY vehicle Frontier (D22), Quest (V41) or Pathfinder (R50) from VIN JN8AR07**XW350101, complete the following actions.
Ignition Coil Output
To see inductance inside the primary windings, use an amp probe placed around the positive wire for the ignition coil.
Air Filters and Fuel Trims
Modern engines rely on precise airflow and oxygen sensor data for optimal performance.
Repairing Wiring Harnesses
A guide to probing and poking.
Diesel Air Filter Replacement
Here are some diesel air filter replacement tips in order to keep these vehicles running as intended.
