DTC 0802

DESCRIPTION
The crankshaft position sensor (POS) is located on the oil pan facing the gear teeth (cogs) of the signal plate (flywheel). It detects the crankshaft position signal (1° signal).
The sensor consists of a permanent magnet, core and coil.
When engine is running, the gap between the sensor and the gear teeth (cogs) will periodically change. Permeability near the sensor also changes.
Due to the permeability change, the magnetic flux near the core is changed. Therefore, the voltage signal generated in the coil is changed.
The ECM receives the voltage signal and detects the crankshaft position signal (1° signal).




DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
Before performing the following procedure, confirm that battery voltage is more than 1O.5V.

With Consult
1) Turn ignition switch "ON" and select "DATA MONITOR" mode with CONSULT.
2) Crank engine for at least 2 seconds.

OR

With GST
1) Crank engine for at least 2 seconds.
2) Select "MODE 3" with GST.

OR

Without Scan Tools
1) Crank engine for at least 2 seconds.
2) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
3) Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.




WIRING DIAGRAM







DIAGNOSTIC PROCEDURE

COMPONENT INSPECTION
1. Disconnect crankshaft position sensor (POS) harness connector.
2. Loosen the fixing bolt of the sensor.
3. Remove the sensor.




4. Visually check the sensor for chipping.
5. Reconnect crankshaft position sensor (POS) harness connector.
6. Turn ignition switch "ON".




7. Check voltage between terminals (2) and (3) when bringing a screwdriver into contact with, and quickly pulling away from the sensor core.




There should be a steady 5V as the screwdriver is drawn away slowly.
If NG, replace crankshaft position sensor (POS).