Ignition Input Accessory/On/Start

Check these first

• A fault in the ignition input wiring between the switch and the module
• A worn ignition switch that sends a wrong signal
• Excessive accessory load on the ignition input circuit
• A failed module that misreads the ignition input

What to do next

1. Read ignition input status on a scan tool through each key position
2. Inspect the ignition input wiring for damage and corrosion
3. Test the ignition switch output at the module
4. Remove added accessories from the ignition circuit
5. Replace the ignition switch or module if the input stays wrong
6. Clear the code and retest

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