Throttle Position Switch

[1][2]A/C Relay
Resistance between terminals 1 and 2 continuity

Air Flow Meter
Output voltage between terminal W & ground 1.0 vdc [3]

Air Fuel Mixture
CO content between 3.0 - 10 % [2]

Air Induction Valve Solenoid
Operating voltage 12 vdc
Resistance value 40 ohms

Auxiliary Air Control Valve
Resistance value 10 ohms

EGR Solenoid
Operating voltage 12 vdc
Resistance value 40 ohms

EGR Temperature Sensor
Resistance value 85k ohms [6]

Fuel Injector
Resistance value 1.5 ohms [1]

Fuel Pump
Resistance between terminals A and C continuity

Fuel Pump Relay
Resistance between terminals 1 and 2 continuity

Idle Switch
Closes idle speed + 250 ± 150 rpm in neutral

ECCS Relay
Resistance between terminals 1 and 2 continuity

Mixture Heater
Resistance value continuity

Throttle Sensor
Resistance value between terminals e & f variable [4]

Vehicle Speed Sensor
Resistance value alternates between open & closed [5]

Water Temperature Sensor
Resistance value at specified temperature
2.1 - 2.9k ohms 20° C (68° F)
0.77 - 0.87k ohms 50° C (122° F)
0.3 - 0.33k ohms 80° C (176° F)


[1] Approximately
[2] With 2.5k ohm resistor in place of cylinder head temperature
sensor, with AIV delivery and control hoses disconnected and
plugged and with O2 sensor disconnected.
[3] Varies when racing engine.
[4] Varies smoothly when moving from closed to open throttle.
[5] Two times per revolution while turning sensor.
[6] At 100° C (212° F.