AR164-05 Starter circuit troubleshooting
If you get a click when you turn key to start that is probably I10 starter relay under fuse panel door which is located on left side of console to left of radio area. You need to open fuse panel door and verify that it is I10 relay that is clicking. If Bosch relay it will have red strip on it. RED STRIPE means it has a diode in it.
Now to verify it is actually energizing and sending current forward towards starter solenoid you need to open hood, remove plastic cover over a/c components behind false firewall at base of windshield.
Locate largest round electrical connector G151 near blower motor housing and unscrew it and locate pin 1 (black power wire) that comes from I10 starter relay. With key on check for 12v at this pin when relay clicks.
If you have power check female socket 1 in other half of connector for damage/corrosion. Clean with electrical connector cleaner and apply some dielectric grease and reconnect and see if starter will now work.
If still no joy you need to try to access black wire going from that pin 1 in G151 at starter A11 itself underneath car and check for power with key in start.
Here are a couple pictures that may help:
First off do you have a good fully charged battery with proper level of electrolyte/distilled water in each cell with correct specific gravity in each cell?
If you get a click when you turn key to start that is probably I10 starter relay under fuse panel door which is located on left side of console to left of radio area. You need to open fuse panel door and verify that it is I10 relay that is clicking. If Bosch relay it will have red strip on it. RED STRIPE means it has a diode in it.
Now to verify it is actually energizing and sending current forward towards starter solenoid you need to open hood, remove plastic cover over a/c components behind false firewall at base of windshield.
Locate largest round electrical connector G151 near blower motor housing and unscrew it and locate pin 1 (black power wire) that comes from I10 starter relay. With key on check for 12v at this pin when relay clicks.
If you have power check female socket 1 in other half of connector for damage/corrosion. Clean with electrical connector cleaner and apply some dielectric grease and reconnect and see if starter will now work.
If still no joy you need to try to access black wire going from that pin 1 in G151 at starter A11 itself underneath car and check for power with key in start.
Here are a couple pictures that may help: