Ignition E Control Signal Circuit Low

Common symptoms

What you'll notice

• Check the ignition coil and spark plugs for any damage or malfunction.
• Inspect the ignition control module and replace if necessary.
• Verify the wiring and connections in the ignition system and repair any faults.
• Clean or replace the ignition switch if it is causing the low signal.
• If all else fails, consider replacing the engine control unit (ECU).

Common causes

Most likely first

1. Faulty ignition coil
2. Defective ignition control module
3. Loose or damaged ignition control module wiring
4. Malfunctioning engine control unit (ECU)
5. Faulty crankshaft position sensor

How to diagnose & fix

Work through it in order

1. Engine misfires or runs rough
2. Poor acceleration or lack of power
3. Difficulty starting the vehicle
4. On
5. board diagnostics (OBD) system warning light illuminates
6. Vehicle stalls or idles erratically