2003 Hyundai Sonata Has A Code P0350 For An Ignition Coil Control Circuit Malfunction
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Customer Concern: Tests/Procedures: Potential Causes: Has a code P0350 for an ignition coil control circuit malfunction. Engine starts and idles ok but won’t rev up. Seems to have good spark. 1. Scope the trigger signals to the coils on the Orange and White wires, there should be square wave signals. If the trigger signals get erratic, scope the camshaft and crankshaft position sensor signals. 2. If only one of the coils has an erratic signal and the other does not, swap the coils and see if the bad signal follows the coil, if so the coil may be faulty. 3. Verify the coil trigger circuits are not open or shorted between the engine control module and the coils. 4. Check engine control module power and ground while the problem occurs. Coil Engine Control Module (ECM) Open Wiring Shorted Wiring
Customer Concern: Tests/Procedures: Potential Causes: Has a code P0350 for an ignition coil control circuit malfunction. Engine starts and idles ok but won’t rev up. Seems to have good spark. 1. Scope the trigger signals to the coils on the Orange and White wires, there should be square wave signals. If the trigger signals get erratic, scope the camshaft and crankshaft position sensor signals. 2. If only one of the coils has an erratic signal and the other does not, swap the coils and see if the bad signal follows the coil, if so the coil may be faulty. 3. Verify the coil trigger circuits are not open or shorted between the engine control module and the coils. 4. Check engine control module power and ground while the problem occurs. Coil Engine Control Module (ECM) Open Wiring Shorted Wiring
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