Main Relay (Computer/Fuel System): Specifications

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

AAC Valve
Resistance value [1] 10 Ohms

Air Flow Meter
Output voltage between terminal A & ground
At idle 1.5 & 2.0 vdc
W / key on & engine off less than 1 vdc

Air Fuel Mixture
CO content [2] between 0.2 & 8.0 %

Air Regulator
Resistance value [1] 75 Ohms

Crank Angle Sensor
Output voltage
Between terminal 3 & ground [6] 5 vdc
Between terminal 4 & ground [5] 5 vdc

ECCS Relay
Resistance between terminals 1 and 2 continuity

Engine Temperature Sensor
Resistance Value
2.1 - 2.9 K ohms at 20° C (68° F)
0.68 - 1.0 K ohms at 50° C (122° F)
0.30 - .33 K ohms at 80° C (176° F)

EGR Solenoid
Operating voltage 12 vdc
Resistance value continuity

EGR Temperature Sensor
Resistance value [3] 85 K ohms

Fuel Injector
Resistance value [1] 10 - 14 Ohms

Fuel Pump
Resistance between terminals d and e [1] 1.5 Ohms

Fuel Pump Relay
Resistance between terminals 1 and 2 continuity

Ignition Coil
Supply voltage 12 vdc
Primary resistance [1] 1.0 Ohms
Secondary resistance [1] 10.0 K ohms

Ignition Resistor
Resistance value 2.2 K ohms

Knock Sensor
Resistance value between terminal e and ground continuity

Throttle Sensor
Resistance value terminals E & F
AT idle [1] 1 K ohm
AT 1/2 throttle [1] 1 K - 9 K ohm
AT full throttle [1] 9 K ohm

Throttle Valve Switch
Closes idle speed + 250 ± 150 rpm in neutral

Vehicle Speed Sensor
Resistance value [4] alternates between open & closed


[1] Approximately
[2] With 2.5 K ohm resistor in place of cylinder head
temperature sensor and with O2 sensor disconnected.
[3] At 100° C (212° F.
[4] Two times per revolution while turning sensor.
[5] Comes and goes 360 times per revolution.
[6] Comes and goes 3 times per revolution.