Ignition J Control Signal Circuit Low

Common symptoms

What you'll notice

• Check the ignition control module for any loose or damaged connections.
• Inspect the ignition coil for any signs of wear or damage and replace if necessary.
• Test the ignition control module using a diagnostic tool and replace if it fails the test.
• Verify the proper functioning of the ignition switch and replace if needed.
• Ensure that the engine ground connections are secure and undamaged.

Common causes

Most likely first

1. Faulty ignition coil
2. Defective ignition control module
3. Malfunctioning ignition switch
4. Wiring issue in the ignition control circuit
5. Faulty engine control module

How to diagnose & fix

Work through it in order

1. Engine misfire or hesitation
2. Reduced power or loss of power during acceleration
3. Difficulty starting the engine
4. Stalling or rough idle
5. Illuminated check engine light