INTRODUCTION
Note. All voltage tests should be performed with a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure.
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.
| Temperature °F (°C) | Resistance Ohms |
|---|
| 40 (-40) | 100,700 |
| 0 (-18) | 25,000 |
| 20 (-7) | 13,500 |
| 40 (4) | 7,500 |
| 68 (20) | 3,400 |
| 100 (38) | 1,800 |
| 160 (70) | 450 |
| 212 (100) | 185 |
COOLANT TEMPERATURE SENSOR RESISTANCE EXCEPT PRIZM/GSi)
| Condition | Resistance Ohms |
|---|
| * (1) | 3,300-4,500 |
| (1) Measure resistance between sensor terminal and engine block. |
| (1) | Measure resistance between sensor terminal and engine block. |
KNOCK SENSOR RESISTANCE TEST (PRIZM GSi)
| Altitude Feet (Meters) | (1) Signal Voltage |
|---|
| Below 1,000 (304) | 3.8-5.5 |
| 1,000-2,000 (304-610) | 3.6-5.3 |
| 2,000-3,000 (610-914) | 3.5-5.1 |
| 3,000-4,000 (914-1219) | 3.3-5.0 |
| 4,000-5,000 (1219-1524) | 3.2-5.8 |
| 5,000-6,000 (1524-1829) | 3.0-4.6 |
| 6,000-7,000 (1829-2133) | 2.9-4.5 |
| 7,000-8,000 (2133-2438) | 2.8-4.3 |
| 8,000-9,000 (2438-2473) | 2.6-4.2 |
| 9,000-10,000 (2473-3048) | 2.5-4.0 |
| (1) Measure voltage at appropriate ECU terminals. See WIRING DIAGRAMS . |
| (1) | Measure voltage at appropriate ECU terminals. See WIRING DIAGRAMS . |
MAP SENSOR VOLTAGE TEST (EXCEPT PRIZM GSi)
| Temperature °F (°C) | (1) Resistance Ohms |
|---|
| 40 (-40) | 100,700 |
| 0 (-18) | 25,000 |
| 20 (-7) | 13,500 |
| 40 (4) | 7,500 |
| 68 (20) | 3,400 |
| 100 (38) | 1,800 |
| 160 (70) | 450 |
| 212 (100) | 185 |
| (1) Measure resistance across sensor terminals. |
| (1) | Measure resistance across sensor terminals. |
MANIFOLD AIR TEMPERATURE (MAT) SENSOR RESISTANCE TEST (EXCEPT PRIZM/GSI)
| Condition | (1) Volt |
|---|
| Lean | .1 |
| Rich | .9 |
| (1) Engine running in closed loop. |
| (1) | Engine running in closed loop. |
OXYGEN SENSOR VOLTAGE TEST
| 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) E2 is Brown wire terminal and IDL terminal is Blue wire terminal. (3) With .023" (.58 mm) feeler gauge installed between stop screw and lever. |
| (1) | With .014" (.35 mm) feeler gauge installed between stop screw and lever. |
| (2) | E2 is Brown wire terminal and IDL terminal is Blue wire terminal. |
| (3) | With .023" (.58 mm) feeler gauge installed between stop screw and lever. |
THROTTLE POSITION SENSOR (TPS) RESISTANCE TEST (PRIZM GSi)
Vehicle Speed Sensor
For information on vehicle speed sensor, see ENGINE SENSORS & SWITCHES in I - SYS/COMP TESTS article.
