Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1480 (MULTIFUNCTION ELECTRONIC MODULES)DIAGNOSIS AND TESTINGSMART JUNCTION BOX (SJB)PINPOINT TESTSPINPOINT TEST M: DTC U0155NORMAL OPERATION
2009 Mercury Milan Premier, 3.0 1, AWD
Normal Operation
2009 Mercury Milan Premier, 3.0 1, AWDSECTION Normal Operation
WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
- DTC U0155 (Lost Communication With Instrument Panel Cluster (IC ) Control Module) - set by the Smart Junction Box (SJB) whenever it receives invalid data from the Instrument Panel Cluster (IPC).
This pinpoint test is intended to diagnose the following:
- Module communication
- SJB
- IPC
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.