Subaru Workshop Service and Repair Manuals

Knock Sensor: Specifications

RESISTANCE SPECIFICATIONS

Air flow sensor:

Between harness terminals 1 and ground.......................................................................................................................................................1M ohms min.
Between harness terminals 4 and ground.......................................................................................................................................................1M ohms min.
Between harness terminals 2 and ground.......................................................................................................................................................1M ohms min.
Between harness terminals 3 and ground...................................................................................................................................................................0 ohms

Bypass air control valve:

Between terminals 1 and 2.........................................................................................................................................................................................9 ohms
Between terminals 2 and 3.........................................................................................................................................................................................9 ohms

Canister purge solenoid.................................................................................................................................................................35.5 ohms @ 20° C (68° F)
Coolant temperature sensor:

20° C (68° F).......................................................................................................................................................................................................2-3K ohms
50° C (122° F)..............................................................................................................................................................................................700-1000 ohms
80° C (176° F)................................................................................................................................................................................................300-400 ohms

Fuel injectors..........................................................................................................................................................................................................11-12 ohms
Fuel pump relay between terminals 1 & 3...................................................................................................................................................................70 ohms
Ignitor/ignition coil primary windings:

Between terminals 2 and 1......................................................................................................................................................................................0.7 ohms
Between terminals 2 and 3......................................................................................................................................................................................0.7 ohms

Ignitor/ignition coil secondary windings:

Between terminals 1 and 2.............................................................................................................................13.8K ohms (Hitachi), 21K ohms (Diamond)
Between terminals 3 and 4.............................................................................................................................13.8K ohms (Hitachi), 21K ohms (Diamond)

Pressure exchange solenoid..............................................................................................................................................................42 ohms @ 20° C (68° F)
Knock sensor..........................................................................................................................................................................................................560K ohms
Throttle sensor:

Between terminals 2 and 3....................................................................................................................................................................................12K ohms
Between terminals 2 and 4............................................................................................................................................................1K ohms (throttle closed)
Between terminals 2 and 4...........................................................................................................................................................4.3K ohms (throttle open)

Wastegate solenoid...........................................................................................................................................................................20 ohms @ 20° C (68° F)