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Circuit Board Repair Resource Blog

How to Identify Counterfeit or Damaged Ford Motorcraft Ignition Coils

We have seen the damaging effects of a lot of Ford Motorcraft counterfeit ignition coils,  otherwise referred to as coil on plug or COPs, to PCMs over the years. The prevalence of counterfeit coil on plugs (COPs) in the market has dramatically increased within the last year. Ford Motor Company has even released a document to help identify fake coils [...]

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Whirlpool Duet CCU FDL and F11 Repair Myths

We have been rebuilding Whirlpool Duet CCU (central control units) for GHW series for many years.  We have unfortunately experienced the effects of many do-it-yourselfers that have fallen victim to home remedies that are scattered throughout forums on the internet.  Opening the housing of a CCU to find the terminals covered in Vaseline isn't exactly what [...]

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6.0 FICM Repair and Testing

FICM repair and testing runs deep in our blood at Circuit Board Medics.  We have a passion for FICM repair.  We own two 6.0 Powerstrokes that are used for research and development, and one of our technicians drives an F-250.  We have experimented with everything from 58 volt output of the FICM to the various FICM [...]

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Why You Should Add a GM Transmission Temperature Gauge to a Chevrolet or GMC Instrument Cluster.

Many owners do not know what the mysterious missing gauge should be on their 2003-2006 GM instrument cluster or the significance of it. For those that do know that this spot is designated for a GM transmission temperature gauge, they might not realize that all full size GM vehicles (Silverado, Suburban, Tahoe, Sierra, Yukon, Avalanche, or Denali) [...]

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Whirlpool Duet F11 Error Troubleshooting

How to troubleshoot the Whirlpool Duet F11 error on your washing machine: The dreaded Whirlpool Duet F11 error code has been plaguing Whirlpool washing machines for the last 8-10 years. This error is often caused by a failed CCU, MCU or sometimes both control boards on the washer. This troubleshooting guide will help work through the different [...]

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2001 - 2003 Toyota RAV4 False Transmission Codes

The 2001, 2002, & 2003 Toyota RAV4 vehicles are notorious for having harsh shifts that feel like  transmission problems. If you are experiencing transmission problems due to a faulty RAV4 Engine Control Module (ECM), there are a few symptoms that occur more often. The most common failure mode of the RAV4 ECM is a harsh shifting [...]

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2001-2003 RAV4 ECM Repair

If your 2001-2003 Toyota RAV4 has been experiencing harsh shifts of the transmission, hesitation between shifts, or false diagnostic trouble codes of P0750, P0753, P0755, P0758, P0770 and/or P1760, then chances are your problems are the result of a bad Engine Control Module (ECM).   Toyota acknowledged this problem in 2006 when the company released a RAV4 [...]

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