Generac — Test 15 – Test Ignition Coil
Testing & diagnosis
From a Generac service manual covering: iX 1600, iX 2000, iX 800. Check it applies to your exact model before use.
Applies to: Generac iX 1600, Generac iX 2000, Generac iX 800
Procedure
- Open up the electrical panel so that the control panel wiring is exposed.
- Disconnect the J1 connector and disconnect the ignition coil boot from the spark plug.
- Set VOM to measure resistance.
- Connect one meter test lead to ground and the other to Pin 1 on the J1 connector. Measure and record.
- Connect one meter test lead to the spark plug wire and the other to engine ground. Measure and record.
Tools required
- VOM Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Pin 1 to Ground: 1.7 Ohms ± 0.5 Ohms
- Spark Plug to Ground: 12.5K Ohms ± 2K Ohms
Full service-parts list: Generac iX 1600 →, Generac iX 2000 →, Generac iX 800 →
Source: Generac service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.