THERMO Time Switch: Fiat
- Disconnect electrical connector from cold start injector. Connect test light between terminals, operate starter and note time test light glows. Light should not glow if coolant temperature is above 95°F (35°C) and should glow for 1-8 seconds at temperatures below 95°F (35°C).
- If light does not glow as outlined, check relay and wiring. If good, replace thermo time switch.