Kia Optima: Engine Control System / Camshaft Position Sensor (CMPS)
Description and operation
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Camshaft Position Sensor (CMPS) is a hall sensor, which detects the camshaft
position by using a hall element.
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It is synchronized with Crankshaft Position Sensor (CKPS) and detects
the piston position of each cylinder which cannot be detected by the CKPS.
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The two CMPS are installed on engine head cover of bank 1 and 2 (intake,
exhaust) respectively and use a target wheel installed on the camshaft.
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The Camshaft Position Sensor is a hall-effect type sensor.
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As the target wheel passes the Hall sensor, the magnetic field changes
in the sensor.
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The sensor then switches a signal which creates a square wave.
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Components and components location
1. Camshaft Position Sensor (CMPS)
-Exhaust
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2. Camshaft Position Sensor (CMPS)
-Intake
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Schematic diagrams
Harness Connector
Repair procedures
| 1. |
The engine control system can be more quickly diagnosed for troubles
by using the vehicle diagnostic system (KDS). (Refer to "DTC guide")
KDS provides the following information.
| (1) |
Self diagnosis : Inspects and displays diagnostic trouble code
(DTC)
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| (2) |
Sensor data : Checks the system input/output value status
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| (3) |
Forced operation : Checks the system operating status
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| (4) |
Additional function : Controls system options, zero point adjustment
and other functions
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| 1. |
Check signal waveform of CMPS using a KDS.
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Specification : Refer to "DTC diagnostic guide"
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DON’T remove the camshaft position sensor during engine running or right
after engine stops, or a scald by the flowed out engine oil may occur.
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| 1. |
Disconnect the negative battery terminal.
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| 2. |
Disconnect the camshaft position sensor connector (A).
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| 3. |
Remove the camshaft position sensor after loosening the mounting bolt
(B).
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Tightening torque :
9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)
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| 1. |
Disconnect the negative battery terminal.
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| 2. |
Disconnect the camshaft position sensor connector (A).
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| 3. |
Remove the camshaft position sensor after loosening the mounting bolt
(B).
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Tightening torque :
9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)
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Install the component to the specified torque.
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Note that internal damage may occur if the component is dropped.
In this case, inspect the component before installation.
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Apply the engine oil to the O-ring.
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| 1. |
Install in the reverse order of removal.
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Description and operation
Description
•
Crankshaft Position Sensor (CKPS) detects the crankshaft position and
is one of the most important sensors of the engine cont ...
Specifications
Specification
Item
Specification
Capacitance (pF)
850 - 1,150
Description and operation
Descrip ...
Other information:
This system provides further enhancements to vehicle stability and steering responses
when a vehicle is driving on a slippery road or a vehicle detects changes in coefficient
of friction between right wheels and left wheels when braking.
WARNING - Tire/ Wheel size
When replacing tires and whee ...
Repair procedures
Inspection
1.
Remove the air cleaner element.
2.
Check if the air filter is excessively dirty. If so, replace the air
cleaner element.
3.
If the air cleaner element needs to be cleaned, blow compre ...
Crankshaft Position Sensor (CKPS)
Knock Sensor (KS)