I never said it was a wiring diagram. I was proving there is a coolant temp. sensor. Which is number 13. Number 12 is the fan switch. The point isnt if there is one or not though. The point Im making is that the coolant temp. sensor could be the reason the fan isnt coming on. YES the fan switch is the obvious answer, but it may not be what is wrong. The coolant temp. sensor and the fan switch work together with the ecu. The link I provided was to explain what a coolant temp. sensor does, and yes it maybe from a GM site. But just because its from a GM doesnt mean it works different. A starter, battery, fuel pump, thermostat, radiator, brake rotor, clutch all WORK the same no matter what kind of car they are on.