DTC P0350: Ignition Coil (Undetermined) Primary/Secondary Circuit Malfunction

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.

P0350 - IGNITION COIL (UNDETERMINED) PRIMARY/SECONDARY CIRCUIT MALFUNCTION

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 shorted to ground Damaged coil Coil driver circuit shorted to VPWR
Diagnostic Aids:	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	-	GO to JB: Secondary Ignition (COP) STEP JB1.	GO to JB: Secondary Ignition (COP) STEP JB1.