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TROUBLESHOOTING MULTIPORT FUEL INJECTION (MPI) <4A9> 13A-42 Code No. P0115: Engine Coolant Temperature Sensor System OPERATION • A power voltage of 5 V is applied to the engine coolant temperature sensor output terminal (ter- • The power voltage is earthed to the engine-ECU <M/T> or engine-CVT-ECU <CVT> (terminal No. FUNCTION • The engine coolant temperature sensor converts the engine coolant temperature into a voltage sig- • In response to the signal, the engine-ECU <M/T> or engine-CVT-ECU <CVT> controls the fuel • The engine coolant temperature sensor is a kind of resistor, which has characteristics to reduce its AK402678 1 2 19 21 20 18 17 16 15 14 1213 11 8 9 L 10 37 38 39 404142434445464748495051 22 23 24 252627282930313233343536 7 5 3 1 6 4 2 29 14 A-114 Engine-ECU <M/T> or Engine coolant Y-G B A-121 (MU802406) 2 1 5 V Engine Coolant Temperature Sensor Circuit AD Wire colour code Main Index Group TOC |