Description |
• |
The Variable Charge Motion Actuator (VCMA) is installed on the inlet of the intake manifold. |
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It consists of a DC motor which actuates the VCM valve and a position sensor which detects the position of the VCM valve. |
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The VCM system tumbles air flow entering into combustion chamber of each cylinder by closing the VCM valve in the cold start conditions. |
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This tumble effect reduces cold start emissions by improving atomization |
Components |
1. Variable Charge Motion Actuator
(VCMA) |
Circuit diagram |
Harness Connector
Inspection |
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.
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Removal |
1. |
Disconnect the negative battery terminal. |
2. |
Disconnect the PCV hose (A).
|
3. |
Disconnect the VCMA connector (A). |
4. |
Remove the VCMA mounting bolts (B).
|
5. |
Remove the VCMA (A).
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Installation |
|
1. |
Install in the reverse order of removal. |