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TIM
TIM, SERVICE MANAGER
Category: Dodge
Satisfied Customers: 6277
Experience:  DODGE SERVICE MANAGER- 20 + YEARS
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Need charging system wiring diagram 2001 Dodge 1500 3.

This answer was rated:

Need charging system wiring diagram

2001 Dodge 1500 3.9

Vin: 1B7HC16X41S304068

TIM :

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TIM :

scratch that

TIM :


 



 




 




 

TIM :


 




 




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Customer:

no start, new battery and system is not charging...put new alternator and still not charging. Checked all fuses and they are ok

TIM :

the charging system is controlled by the powertrain control module(engine controller)--

Customer:

need what the pin voltage should be from the pcm to the alternator with key on and while running

TIM :


Ignition on, engine not running.


With the DRBIII



t

 


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®

 


t

 


t

 


®

 


®

 



18



CHARGING




Test Complete.



Repair as necessary where wiggling caused problem to appear.

 



Perform POWERTRAIN VERIFICATION TEST VER - 3.


No



, read DTC’s.

 



Does the Generator Field Driver (-) Circuit code return?


All


Yes



actuate the Generator Field Driver Circuit.

 



Wiggle Wiring Harness from the Generator to PCM.


With the DRBIII



Go To 3

 



2 Ignition on, engine not running.


With the DRBIII



Go To 2

 



No



, actuate the Generator Field Driver Circuit.

 



Using a 12-volt test light, backprobe the Generator Field Driver Circuit at the back


of the Generator.


Did the light blink?


All


Yes

TIM :













3 Ignition on, engine not running.


Record all DTC’s and freeze frame data, now erase Codes.


Carefully inspect all Connectors for corrosion or spread Terminals before continuing.


With the DRBIII




t


actuate the Generator Field Driver Circuit.

Backprobe the Generator Field Source (+) Circuit at back of Generator.


Is the voltage above 10.0 volts?


All


Yes





®


Go To 4

No





®


Repair the Generator Field Source (+) Circuit for an open.

Perform POWERTRAIN VERIFICATION TEST VER - 3.


4 Turn the ignition off.


Disconnect the PCM harness connector(s).


Disconnect the Generator Field harness connector.


Measure the resistance between ground and the Generator Field Driver Circuit in


the PCM harness connector.


Is the resistance below 5.0 ohms?


All


Yes





®


Repair the Generator Field Driver Circuit for a short to ground.

Perform POWERTRAIN VERIFICATION TEST VER - 3.


No





®


Go To 5

5 Turn the ignition off.


Disconnect the PCM harness connectors.


Disconnect the Generator Field harness connector.





Note: Check Connectors - Clean/repair as necessary.



Measure the resistance of the Generator Field Driver Circuit between the PCM


harness connector and the Generator Field harness connector.


Is the resistance below 5.0 ohms?


All


Yes




®


Go To 6

No





®


Repair the Generator Field Driver Circuit for an open.

Perform POWERTRAIN VERIFICATION TEST VER - 3.


6 Turn the ignition off.


Disconnect the Generator Field harness connector at back of the Generator.





Note: Check connectors - Clean/repair as necessary.



Measure resistance across the Generator Field Terminals at the Generator.


Is the resistance below 5.0 ohms?


All


Yes




®


Repair the Generator as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 3.


No





®


Go To 7

7 If there are no possible causes remaining,


View repair.


All


Repair


Replace and program the Powertrain Control Module in accordance


with the Service Information.


Perform POWER





TIM :

this is the test for the computer -- which control charging

TIM :

we should have 14.5 volts out of alternaotr with the engine running

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