How do you check ignition coil is ok 1997 jaguar xk8?

To check the ignition coil on a 1997 Jaguar XK8, first ensure the engine is off and disconnect the negative battery terminal. Use a multimeter to test the primary and secondary resistance of the coil; typically, the primary resistance should be around 0.5 to 1.5 ohms, while the secondary resistance should be around 6,000 to 15,000 ohms. Additionally, inspect the coil for any visible signs of damage or corrosion. If the readings fall outside these ranges or the coil shows physical damage, it may need replacement.