Ohms Values

CAUTION: When measuring Ohms disconnect the ECU from the harness plug and never turn the ignition key on. It is possible that failure to follow these steps will result in damage to the ECU.

GROUNDS
KEY OFF
Pin G1 to 2 0.0 - 0.5 Ohms
Pin G1 to 10 0.0 - 0.5 Ohms
Pin G1 to 14 0.0 - 0.5 Ohms
Pin G1 to 19 0.0 - 0.5 Ohms

MAGNETIC COIL SENSORS
Sensor type
Pin 47 to 48 (speed/Mark) 550 - 650 Ohms
Pin 8 to 31 (Cyl ID) 0.2 - 0.8 Ohms

COOLANT TEMPERATURE SENSOR
Pin 45 to 19
68°F 2200 - 2700 Ohms
176-194°F 200 - 400 Ohms

AIR TEMPERATURE SENSOR
Pin 44 to 26
68°F 2200 - 2700 Ohms
104° - 122°F 700 - 1000 Ohms

THROTTLE SWITCH
Pin 52 to 19 (Closed) 0.0 - 2.0 Ohms
Pin 53 to 19 (Full load) 0.0 - 2.0 Ohms

FUEL PUMP RELAY
Pin 3 to 37
Coil winding 80 - 90 Ohms

AIR FLOW SENSOR
Pin 7 to 26 (Load) 3 - 4 Ohms
Pin 26 to 43 (CO Adj.) 300 - 500 Ohms
Pin 26 to 25 (Burn-off) 2000 - 3000 Ohms

SINGLE INJECTOR
Winding
Across injector contacts 15 - 17 Ohms

INJECTOR GROUP(S)
Winding
Pin 37 to 16 6.0 - 7.0 Ohms
Pin 37 to 17 6.0 - 7.0 Ohms