The crankshaft position sensor reads the rotation of the crankshaft which the computer translates to determine engine timing sequences. The computer uses this reading, in conjunction with the camshaft position sensor, to determine proper fuel injection and ignition timing.
See Figures 1 and 2
- Disconnect the crankshaft position sensor wire harness plug.
- Connect an ohmmeter to the sensor terminals A and B and measure the resistance.
- The reading should be 520-580 ohms at 68°F (20°C).
- If not as specified, replace the sensor.
- Measure the air gap of the sensor between the crankshaft pulley and the sensor.
- Proper air gap should be 0.040-0.080 in. (1-2 mm).
- If not as specified, inspect the crankshaft pulley and/or replace the sensor.
REMOVAL & INSTALLATION
See Figure 3
- Disconnect the negative battery cable.
- Remove the necessary accessory drive belts to access the sensor.