Coolant Temperature Sensor/Switch (For Computer)

Advance Ignition Timing [2]
At idle 10° BTDC

Base Ignition Timing [1]
At idle 5° BTDC

Air Flow Sensor [5]
At 750 RPM 25 - 40 Hz
At 2,000 RPM 70 - 90 Hz

Barometric Pressure Sensor Voltage
(W/ key on and engine off)
At sea level Approximately 4.0 Volts.
At 2,000 ft. Approximately 3.75 Volts.
At 4,000 ft. Approximately 3.50 Volts.
At 6,000 ft. Approximately 3.25 Volts.

Coolant Temperature Switch [4]
Closed 226° F (108° C)
Open 239° F (115° C)

Crank Angle Sensor
Approximate Voltage at idle 1.8 - 2.5v (needle fluctuates)

EGR Temperature Sensor Resistance [3]
At 122° F (50° C) 60K - 83K Ohms
At 212° F (100° C) 11K - 14K Ohms

EGR Control Solenoid Valve Resistance [3]
At 68° F (20° C) 36 - 44 Ohms

Engine Coolant Temperature Sensor Resistance
At 68° F (20° C) 2.5K Ohms
At 176° F (80° C) 300 Ohms

Fuel Injector Coil Resistance
At 68° F (20° C) 13 - 16 Ohms

Idle Speed Control Servo Resistance
At 68° F (20° C) 28 - 33 Ohms

Intake Air Temperature Sensor Resistance
At 68° F (20° C) 2.7K Ohms
At 176° F (80° C) 300 Ohms

Purge Control Solenoid Valve Resistance
At 68° F (20° C) 36 - 44 Ohms

TDC Sensor
Approximate Voltage at idle 2.0 - 2.5v (needle fluctuates)

Throttle Position Sensor Adjustment Voltage
At Curb Idle 0.48 - 0.52 Volts

Throttle Position Sensor Resistance
Varies between 3.5K - 6.5K Ohms



[1] Refer to ADJUSTMENT PROCEDURES.
[2] Not adjustable.
[3] California Only.
[4] A/C Only.
[5] Measured across terminals 1 and 4.