Engine Controls - Sensor Operating Range Charts: Specifications

ATMOSPHERIC PRESSURE (PA) SENSOR VOLTAGE TEST ⁽¹⁾

BARO Pressure - In. Hg

Volts

2.8-3.0

2.3-2.5

1.8-2.0

1.3-1.5

.8-1.0

.3-.5

⁽¹⁾	Measure voltage between ECU terminals.

COOLANT TEMPERATURE (TW) SENSOR RESISTANCE TEST ⁽¹⁾

Temperature - °F (°C)

Resistance (Ohms)

-4 (-20)

15,000-18,000

68 (20)

2000-4000

176 (80)

300-400

⁽¹⁾	Measure resistance across sensor terminals.

INTAKE AIR TEMPERATURE (TA) SENSOR RESISTANCE TEST ⁽¹⁾

Temperature - °F (°C)

Resistance (Ohms)

-4 (-20)

15,000-18,000

68 (20)

2000-4000

176 (80)

300-400

⁽¹⁾	Measure resistance across sensor terminals.

MAP SENSOR VOLTAGE TEST ⁽¹⁾

Vacuum Applied - In. Hg

Volts

2.8-3.0

2.3-2.5

1.8-2.0

1.3-1.5

.8-1.0

.3-.5

⁽¹⁾	Measure voltage between ECU terminals C11 (positive) and C14 (negative).

EGR LIFT SENSOR VOLTAGE TEST ⁽¹⁾

Position

Approximate Volts

Fully Closed

1.0

Fully Open

4.5

⁽¹⁾	Measure resistance between terminals C8 (positive) and C14 (negative). Voltage should increase smoothly as vacuum is applied.

OXYGEN SENSOR VOLTAGE TEST ⁽¹⁾

Condition

Volts

Lean

Rich

⁽¹⁾	Measure voltage between ground and O2 sensor terminal using a high-impedance DVOM.