ECM/PCM Communication Issues (VIDEO)
Before you swap out a module that won’t communicate, do a few simple inspections. Sponsored by The Group Training Academy.
ECM And PCM Calibration Numbers
Finding out if the vehicle has the latest version or calibration on a module is a required step.
Nissan: MIL On With Code P0603 Stored For ECM Back Up Circuit
Step 1: Confirm that the battery voltage is 11 volts or more, with the ignition on and engine off.
The Diagnostic Shell Game: Why The ECM Can’t See A No-Code Stalling Complaint
Remember the old carnival game where a dealer hides a pea under one of a half-dozen walnut shells? After the dealer artfully shuffles the six shells, you’re supposed to pick the shell with the pea hidden under it. Good luck with that. As veteran diagnostic technicians know, diagnosing a no-code intermittent stalling complaint can be like playing the old carnival shell game. We know it’s one of maybe six sensors, but why can’t we find the diagnostic trouble code (DTC) that tells us where to find the pea?
Volkswagen Issues Voluntary Recall, To Install Revised ECM
Volkswagen of America notified the National Highway Traffic Safety Administration (NHTSA) that it will be issuing a voluntary safety recall affecting the fuel pump on certain 2009-2014 model year Volkswagen Tiguan vehicles. The recall affects approximately 151,389 model year 2009-’14 Volkswagen Tiguan vehicles. In isolated cases, it is possible that gas bubbles may form in
Audi Tech Tip: MIL On With P1545, P0121, P0123, P0221 Or P0222 Stored In ECM
The MIL is on, with a number of incident memory entries with regard to the throttle valve are stored in the ECM. In most cases, the entries are sporadic. This may be the result of contact resistance in the ECM wiring – throttle valve.
Tech Tip: Volkswagen Has MIL On, DTCs P1355, P1358, P1361 or P1364 Stored in ECM Fault Memory
This tip is associated with 2002-’04 2.0L Golf, Jetta, New Beetle and New Beetle Convertible vehicles.
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.