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The Independent Automotive Aftermarket Federation

Technical Teaser: Ford fuel failure for the C-Max - Auto Education Academy Technical Bulletin

Date: 10-Dec-2019

The Auto Education Academy, Euro Car Parts’ training division, regularly issues technical bulletins to provide technicians across the country with crucial vehicle servicing information. It forms part of Euro Car Parts’ commitment to the aftermarket industry, aiming to assist repairers in conducting high-quality work with the best information at hand. This latest bulletin takes a look at a recurring problem in Ford C-Max multi-purpose vehicles equipped with the 1.6-litre EcoBoost engine (134kW/182HP).

Can you determine the cause of the symptoms before checking the provided solution below?

Technical teaser
A Ford C-Max arrives at your workshop with problems in its heater fuel system. You run diagnostics and are presented the following code recorded in the auxiliary heater control unit (AHCM):
B1D32 – Multiple interruption of the flame during the heating cycle.

Do you know the solution? Here is what the Auto Education Academy recommends…

The Auto Education Academy Solution
This issue is caused by defects in the fuel supply line of the additional heater – therefore, this technical note is only relevant to vehicles equipped with an additional heater. Once the problem is identified, follow the repair procedure outlined below:

1. Read the fault codes recorded by the auxiliary heater control unit (AHCM) using a diagnostic tool.
2. Confirm that the fault code listed above is displayed and the symptoms match what you are seeing.
3. Purge the additional heater fuel system.
4. Check the condition of the fuel lines between the tank and the additional heater.
5. Check for the presence of bubbles in the fuel line by using a transparent line.
6. Check the condition of the fuel line adapter on the top part of the tank.
7. Install a new fuel gauge if the condition of the line adapter is poor.
8. Clear the fault codes recorded by the auxiliary heater control unit (AHCM) using a diagnostic tool.

Technical Helpline
Even experienced technicians occasionally encounter a problem that exhausts their skill set and knowledge. For a second opinion and guidance you can trust, look no further than Auto Education Academy membership. It grants access to the Academy’s Technical Helpline, providing troubleshooting, repair/diagnostics assistance and technical information for every vehicle make and model.

The Technical Helpline’s team of master technicians are equipped with a comprehensive database of diagnostic and technical issues, with up to 600 new cases added daily. They can handle all sorts of queries and will do everything they can to research and resolve your issue. They have access to repair manuals, circuit diagrams, parts catalogues and component locations for any vehicle that comes through your workshop. One call could save you, and your customer hours.

Interested? Learn more about the service here: 

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