Air Flow Meter/Sensor
Ignition TimingBase Ignition Timing [1]
At idle 5° BTDC
Advance Ignition Timing [2]
At idle 10° BTDC At Idle
Air Flow Sensor [4]
At 750 RPM 30 - 45 Hz
At 2,000 RPM 80 - 110 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.
Crank Angle Sensor
Approximate Voltage at idle 1.8 - 2.5v (needle fluctuates)
EGR Temperature Sensor Resistance [4]
At 122° F (50° C) 60 - 83 KOhms
At 212° F (100° C) 11 - 14 KOhms
EGR Control Solenoid Valve Resistance [4]
At 68° F (20° C) 36 - 44 Ohms
Engine Coolant Temperature Sensor Resistance
At 68° F (20° C) 2.5 KOhms
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) 5 - 35 Ohms
Intake Air Temperature Sensor Resistance
At 68° F (20° C) 2.7 KOhms
At 176° F (80° C) 300 Ohms
Motor Position Sensor Resistance
At 68° F (20° C) 4 - 6 KOhms
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 3.5 - 6.5 KOhms
[1] Refer to ADJUSTMENT PROCEDURES.
[2] Not adjustable.
[3] A/C only.
[4] California only.