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P0350 - Ignition Coil Primary/Secondary Circuit

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2008 Mercury Sable, 2008 Mercury Mountaineer, 2008 Mercury Milan, 2008 Mercury Mariner, and 2008 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
P0350 - IGNITION COIL PRIMARY/SECONDARY CIRCUIT

Description:  Each ignition primary circuit is continuously monitored. The test fails when the powertrain control module (PCM) does not receive a valid ignition diagnostic monitor (IDM) pulse signal from the ignition module (integrated in the PCM).
Possible Causes: 
  • Open or short in the ignition START/RUN circuit
  • Open coil driver circuit
  • Coil driver circuit short to ground
  • Damaged coil
  • Coil driver circuit short to VPWR
Diagnostic Aids:  The PCM may disable the fuel injector for a cylinder that is misfiring to protect the exhaust system catalyst.
Use the 12-volt non-powered test lamp to verify START/RUN voltage at the ignition coil harness connector.
Check the coil driver circuit for open, short to VPWR, or short to ground.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All   refer to PINPOINT TEST JE .
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