Ohms Measurements

35 Position ECU Plug:

Connector View

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 9 0.0 - 0.2 Ohms
Pin G1 to 18 0.0 - 0.2 Ohms

MAGNETIC COIL SENSORS
Sensor type
Pin 12 to 13 (Mark) 800 - 1200 Ohms
Pin 11 to 29 (speed) 800 - 1200 Ohms

COOLANT TEMPERATURE SENSOR
Pin 9 to 10
68°F 750 - 1250 Ohms
176-194°F 100 - 175 Ohms

AIR TEMPERATURE SENSOR
Pin 9 to 24
68°F 2200 - 2700 Ohms
104-122°F 400 - 700 Ohms

THROTTLE SWITCH
Pin 20 to 35 (Closed) 0.0 - 2.0 Ohms
Pin 26 to 35 (Full load) 0.0 - 2.0 Ohms

DECELERATION MICRO SWITCH
Pin 4 to 35
Closed 0.0 - 2.0 Ohms
Opened INFINITY

FREQUENCY VALVE
Winding
Pin 8 to 87A 10 - 13 Ohms
87A is the fuel pump relay terminal that feeds power to these valves when the engine is running.

CARBON CANISTER SHUT OFF VALVE
Winding
Pin 23 to 87A 30 - 60 Ohms
87A is the fuel pump relay terminal that feeds power to these valves when the engine is running.

COLD START INJECTOR
Winding
Pin 1 to 87A 8 - 13 Ohms
87A is the fuel pump relay terminal that feeds power to these valves when the engine is running.