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 6 to G1 0.0 - 0.2 Ohms
Pin 28 to G1 0.0 - 0.2 Ohms
Pin 34 to G1 0.0 - 0.2 Ohms
Pin 55 to G1 0.0 - 0.2 Ohms

MAGNETIC COIL SENSORS
Sensor type
Pin 67 to 68 (Cyl ID) 480 - 600 Ohms
Pin 16 to 44 (TDC) 1.0 - 1.6 Ohms

COOLANT TEMPERATURE SENSOR
Pin 43 to 78
68°F 2300 - 2700 Ohms
176-194°F 280 - 400 Ohms

AIR TEMPERATURE SENSOR
Pin 43 to 77
68°F 2200 - 2700 Ohms
104° - 122°F 700 - 1000 Ohms

SINGLE INJECTOR
Winding
Across injector contacts 15 - 17 Ohms

EVAPORATIVE PURGE VALVE
Winding
Pin 54 to 36 40 - 60 Ohms

OXYGEN SENSOR HEATER RELAY
Coil winding
Pin 54 to 1 90 - 110 Ohms

THROTTLE POSITION SENSOR
Pin 43 to 59 (Supply) 4600 - 5000 Ohms
Pin 43 to 12 (Closed) 800 - 1300 Ohms
Pin 43 to 12 (Full load) 3500 - 4500 Ohms

AIR FLOW SENSOR
At rest
Pin 14 to 59 (Supply) 500 - 1000 Ohms
Pin 14 to 41 (Load) 50 - 150 Ohms
Flap on air flow sensor closed or air flow sensor plate at rest position. Resistance increases as flap or plate opens.
Pin 14 to 41 (Load) 400 - 800 Ohms
Flap on air flow sensor opened to maximum or air flow plate deflected to maximum.

FUEL PUMP RELAY
Pin 54 to 1
Coil winding 90 - 110 Ohms

INJECTOR GROUP(S)
Winding
Pin 54 to 3 7.0 - 9.0 Ohms
Pin 54 to 32 7.0 - 9.0 Ohms

IGNITION COIL(S)
Primary winding
Pin 56 to 25 (Coil 1) 0.7 - 1.2 Ohms
Pin 56 to 52 (Coil 2) 0.7 - 1.2 Ohms
Pin 56 to 24 (Coil 3) 0.7 - 1.2 Ohms
Pin 56 to 51 (Coil 4) 0.7 - 1.2 Ohms

ISC VALVE
Winding
Pin 54 to 29 6 - 10 Ohms