Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it may cause driveability problems.

NOTE: Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.

COOLANT TEMPERATURE SENSOR RESISTANCE

Temperature °F (°C)

Ohms

Prizm & Prizm GSi

⁽¹⁾

⁽¹⁾	Information is not available from manufacturer.

EGR TEMPERATURE SENSOR RESISTANCE

Temperature °F (°C)	Ohms
112 (50)	69,000-80,000
212 (100)	11,000-15,000
302 (150)	2000-4000

IAT SENSOR RESISTANCE

Temperature °F (°C)

Ohms

Prizm & Prizm GSi

⁽¹⁾

⁽¹⁾	Information is not available from manufacturer.

KNOCK SENSOR RESISTANCE

Application

Ohms

Prizm GSi

⁽¹⁾ 3300-4500

⁽¹⁾	Measure resistance between sensor terminal and engine block.

OXYGEN SENSOR HEATER RESISTANCE

Application	Ohms
Prizm GSi	3.5-14

THROTTLE POSITION SENSOR (TPS) RESISTANCE (GSi)

Condition

Resistance (Ohms)

Between Terminals E2 & IDL ⁽¹⁾⁽²⁾

Continuity

Between Terminals E2 & IDL ⁽²⁾⁽³⁾

No Continuity

⁽¹⁾	With .014" (.35 mm) feeler gauge installed between stop screw and lever.

⁽²⁾	Terminal E2 is the top terminal (Brown wire) terminal. The IDL terminal is the second terminal (Blue wire) from the top of TPS.

⁽³⁾	With .023" (.58 mm) feeler gauge installed between stop screw and lever.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Engine Controls - Sensor Operating Range Charts: Introduction: Notes

Use the Manual With the Right Hardware

When to See a Mechanic