NANO

306 ENGINE 273 MPFI SENSORANDACTUATOR TESTING No. Sensor Parameter Measured Across Nominal values Additional Checks Condition 1 Coolant Temp. Thermistor Resistance At 25 º C 1.954 K Ohm - 2.160 K Ohm 2 Thermostat Sensor Thermistor Resistance Pin 1 & 2 At 20 º C 2.375 K Ohm - 2.675 K Ohm 3 Crank Shaft Position Sensor Coil Resistance Pin 1 & 2 At 20 º C 801 - 979 Ohm Inductance Pin 1 & 2 310 mH - 430 mH (1Khz,Series Circuit) 4 Throttle Position Sensor Resistance Pin 1 & 3 790 Ohm - 1500 Ohm @ Fully Closed Throttle Position (Idle) 2230 Ohm - 3660 Ohms @ Fully Open Throttle Position 1360 Ohm - 2400 Ohms (Constant) 2230 Ohm - 3660 Ohms @ Fully Closed Throttle Position The circuit should not be open (High value of resistance) Pin 2 & 3 Pin 1 & 2 5 Lambda Sensor Heater Resistance Pin 1 & 2 At room temp. 9 Ohm 6 Fuel Injector Resistance Pin 1 & 2 13.775 Ohnm - 15.225 Ohm 7 Resistance 14 Ohm - 18 Ohm Leakage - Signi f icant leakage can be detected through sucking on the cover side with mouth. Any leakage can be felt with the finger tip on the opposite port. Switching - Power the valve couple times with 12- 14 Volts and listen to the switching noise. 8 Winding Resistance Pin 1 and 2 (Primary) High Voltage Terminals (Secondary) 370 m Ohm - 430 m Ohm Pin 1 & 2 O/P of TPS at Throttle Idle Position = 0.3V - 0.6V O/P of TPS at ThrottleWOT Position = 4.3V - 4.7V (as per the Diagnostic tool) 2.7V - 3.0V (measured wi th the Vol tmeter between pimns 1 & 3) Canister Purge Valve Ignition Coil At 20 º C At 20 º C The circuit should not be open (High value of resistance) 790 Ohm - 1500 Ohm@ Fully Open Throttle Position (Idle) Nominal O/P voltage ratio from stop to stop should be 0.05 (Ful ly Closed Throttle/Idle) <= UA/UV <= 0.95 (Ful ly Open Throttle) where UA= O/P Vol tage, UV= Supply Voltage = 3.3V Pin 1 and 2 At room temp. 5.2 K Ohm - 6.2 K Ohm