P0622 Dodge

P0622 Dodge - Generator Field Not Switching

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P0622 Dodge Comments |  Add Comment
Possible causes
- Battery charge
- Faulty Generator
- Generator harness is open or shorted
- Generator circuit poor electrical connection
- Engine Control Module (ECM) controlled generator
- Faulty ECM
What does this mean? What does this mean?
Tech notes
If the battery is OK then the alternator is more than likely the problem.
What does this mean? What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0622 Dodge Description

The Engine Control Module (ECM) uses the generator turn on signal circuit to control the generator. A high side driver within the ECM allows the ECM to turn the generator ON and OFF. When Generator operation is desired, the ECM sends a 5 volt signal to the voltage regulator via the generator turn on signal circuit. This causes the voltage regulator to begin controlling the generator field circuit. Once the Generator is enabled by the ECM, the voltage regulator controls generator output independently of the ECM. Under certain operating conditions, the ECM can turn Off the generator by turning Off the 5 volt signal on the generator turn on signal circuit.

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DODGE Technical Service Bulletins for P0622 code
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2003 DODGE INTREPID Interior Lighting Details
More Bulletins What does this mean? What does this mean?
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Repair Importance Level
3
1=Low 2=Medium 3=High Code Importance Level
Repair Difficulty Level
3
1=Easy 2=Moderate 3=Hard Code Importance Level
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