2006 Bosch alternator- wire external regulator

[acmunro]

Hello, Is it possible to wire up an old chrysler voltage regulator to control a Bosch alternator found in a 2006 Ram CTD ? If it is how do I do it ? I think the PCM is the regulator now. Is that correct ?

 

[TCDiesel]

No... ... .....

 

[TCDiesel]

The system controls the MAX Voltage and regulates the charge according to Battery Temp.

 

[CKelley1]

it is in the ecm. i bought a external regulator for one, i will see if i can find the wiring diagram hopefully some one else will chime in

 

[acmunro]

Just sending it back to the top to see if there is any other input. Thanks

 

[Bob4x4]

The charging system consists of:



Generator

Electronic Voltage Regulator (EVR) circuitry within the Powertrain Control Module (PCM). Electronic Control Module (ECM) for diesel engines.

Ignition switch

Battery (refer to 8, Battery for information)

Battery temperature sensor

Check Gauges Lamp (if equipped)

Voltmeter (refer to 8, Instrument Panel and Gauges for information)

Wiring harness and connections (refer to 8, Wiring Diagrams for information)

 

[Bob4x4]

08 - Electrical/8F - Engine Systems/Charging/Operation

OPERATION

The charging system is turned on and off with the ignition switch. The system is on when the engine is running and the ASD relay is energized. When the ASD relay is on, voltage is supplied to the ASD relay sense circuit at the PCM (ECM Diesel). This voltage is connected through the PCM (ECM Diesel) and supplied to one of the generator field terminals (Gen. Source +) at the back of the generator.



The amount of direct current produced by the generator is controlled by the EVR (field control) circuitry contained within the PCM (ECM Diesel). This circuitry is connected in series with the second rotor field terminal and ground.



A battery temperature sensor, located in the battery tray housing, is used to sense battery temperature. This temperature data, along with data from monitored line voltage, is used by the PCM (ECM Diesel) to vary the battery charging rate. This is done by cycling the ground path to control the strength of the rotor magnetic field. The PCM then compensates and regulates generator current output accordingly.



All vehicles are equipped with On-Board Diagnostics (OBD). All OBD-sensed systems, including EVR (field control) circuitry, are monitored by the PCM (ECM Diesel). Each monitored circuit is assigned a Diagnostic Trouble Code (DTC). The PCM will store a DTC in electronic memory for certain failures it detects.



The Check Gauges Lamp (if equipped) monitors: charging system voltage, engine coolant temperature and engine oil pressure. If an extreme condition is indicated, the lamp will be illuminated. This is done as reminder to check the three gauges. Refer to 8, Instrument Panel and Gauges for additional information.

 

[Bob4x4]

The Electronic Voltage Regulator (EVR) is not a separate component. It is actually a voltage regulating circuit located within the PCM (Powertrain Control Module) (within the ECM for diesel engines). The EVR is not serviced separately. If replacement is necessary, the PCM must be replaced

 

[Bob4x4]

No... ... .....

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[TCDiesel]

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Yep... ... .

 

[GReed]

Not sure about 3rd gen, but that has been done on 2nd gen. I believe there is a write up and wiring diagram on www.moparman1973.com