Library: Checking the Starting Circuit

If turning the ignition switch does not cause the starter to run, follow these steps:

1. Turn of ignition, put gearshift in neutral, pull up hand brake.
2. Open bonnet and locate starter relay.
3. On the started relay jumper the brown wire on terminal C1 to the white/brown wire on terminal C2, the starter should run. If not, you have a bad solenoid, or bad connection from relay down to the solenoid coil. If you hear the starter solenoid click then you could have a bad starter.

If it runs, then with ignition off, jumper brown wire on relay terminal C1 to the white/red wire on the relay terminal W1.

If the starter still doesn't run, then you have a bad starter relay. If it does run then I would suspect the ignition switch start contact, unless your car has a seatbelt sequential control system that is preventing the starter relay from activating.