Ohms Values

25 Position ECU Plug:

For Terminal ID please refer to "Engine Control Module : Diagrams : Connector Views". Connector Views

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 5 to G1 CONTINUITY
Pin 5 to 13 CONTINUITY

COOLANT TEMPERATURE SENSOR
Pin 5 to 10
68°F 2000 - 2800 Ohms
176-194°F 250 - 500 Ohms

THROTTLE SWITCH
Pin 9 to 2 (Closed) CONTINUITY
Pin 9 to 3 (Full load) CONTINUITY

AIR FLOW SENSOR
At rest
Pin 5 to 9 (supply) 400 - 650 Ohms
Pin 5 to 8 (ref.) 200 - 400 Ohms
Pin 5 to 7 (load) 20 - 100 Ohms
Flap on air flow sensor closed or air flow sensor plate at rest position. Resistance increases as flap or plate opens.
Pin 5 to 7 (load) 300 - 600 Ohms
Flap on air flow sensor opened to maximum or air flow plate deflected to maximum.

BAROMETRIC PRESURRE SENSOR
Changes with atmosphere pressure
Pin 5 to 11 1000 - 5000 Ohms

SINGLE INJECTOR
Winding
Across injector contacts 2.0 - 3.0 Ohms

INJECTOR GROUP(S)
Winding (4 injectors)
Pin 9 to 12 0.55 - 0.75 Ohms