Engine code 41 remedy?
 

Anyone know what the most common fix for engine code 41 is ('93 ZJ)? My
alternator is not putting out any output. Is it typically more than just
replacing the alternator? I'm trying to get this vehicle running so I can
give it away to a relative, so I'm hoping it doesn't turn out to need
anything expensive.

-Jonathan

Re: Engine code 41 remedy?
 

Fault Code 41
Synopsis
Description: Alternator field control circuit open or shorted
Power loss light: Off
Limp-in mode: None

Possible Causes
Bad connection or wiring - Check the wiring and connections between the
logic module and the power module. Clean and regrease any corroded
connectors with dielectric grease and repair any shorts.
Bad voltage regulator circuit - See Diagnosing Your Charging System


Diagnostic Method
Trigger Parameters
- Near 0V or near 12V not detected when the field coil driver is turned on
or off, respectively
Results If Component Fails
Fault code 41 is stored. If the condition persists, it will eventually
result in a fault code 46 or 47.

"Pond Scum" <jhue@sonic.net> wrote in message
news:449af419$0$65451$742ec2ed@news.sonic.net...
>
> Anyone know what the most common fix for engine code 41 is ('93 ZJ)? My
> alternator is not putting out any output. Is it typically more than just
> replacing the alternator? I'm trying to get this vehicle running so I can
> give it away to a relative, so I'm hoping it doesn't turn out to need
> anything expensive.
>
> -Jonathan

Re: Engine code 41 remedy?
 

Fault Code 41
Synopsis
Description: Alternator field control circuit open or shorted
Power loss light: Off
Limp-in mode: None

Possible Causes
Bad connection or wiring - Check the wiring and connections between the
logic module and the power module. Clean and regrease any corroded
connectors with dielectric grease and repair any shorts.
Bad voltage regulator circuit - See Diagnosing Your Charging System


Diagnostic Method
Trigger Parameters
- Near 0V or near 12V not detected when the field coil driver is turned on
or off, respectively
Results If Component Fails
Fault code 41 is stored. If the condition persists, it will eventually
result in a fault code 46 or 47.

"Pond Scum" <jhue@sonic.net> wrote in message
news:449af419$0$65451$742ec2ed@news.sonic.net...
>
> Anyone know what the most common fix for engine code 41 is ('93 ZJ)? My
> alternator is not putting out any output. Is it typically more than just
> replacing the alternator? I'm trying to get this vehicle running so I can
> give it away to a relative, so I'm hoping it doesn't turn out to need
> anything expensive.
>
> -Jonathan

Re: Engine code 41 remedy?
 

Fault Code 41
Synopsis
Description: Alternator field control circuit open or shorted
Power loss light: Off
Limp-in mode: None

Possible Causes
Bad connection or wiring - Check the wiring and connections between the
logic module and the power module. Clean and regrease any corroded
connectors with dielectric grease and repair any shorts.
Bad voltage regulator circuit - See Diagnosing Your Charging System


Diagnostic Method
Trigger Parameters
- Near 0V or near 12V not detected when the field coil driver is turned on
or off, respectively
Results If Component Fails
Fault code 41 is stored. If the condition persists, it will eventually
result in a fault code 46 or 47.

"Pond Scum" <jhue@sonic.net> wrote in message
news:449af419$0$65451$742ec2ed@news.sonic.net...
>
> Anyone know what the most common fix for engine code 41 is ('93 ZJ)? My
> alternator is not putting out any output. Is it typically more than just
> replacing the alternator? I'm trying to get this vehicle running so I can
> give it away to a relative, so I'm hoping it doesn't turn out to need
> anything expensive.
>
> -Jonathan

Re: Engine code 41 remedy?
 

In article <449af419$0$65451$742ec2ed@news.sonic.net>,
Pond Scum <jhue@sonic.net> wrote:
#
#Anyone know what the most common fix for engine code 41 is ('93 ZJ)? My
#alternator is not putting out any output. Is it typically more than just
#replacing the alternator? I'm trying to get this vehicle running so I can
#give it away to a relative, so I'm hoping it doesn't turn out to need
#anything expensive.
#

Is this the original alternator?

/herb

Re: Engine code 41 remedy?
 

In article <449af419$0$65451$742ec2ed@news.sonic.net>,
Pond Scum <jhue@sonic.net> wrote:
#
#Anyone know what the most common fix for engine code 41 is ('93 ZJ)? My
#alternator is not putting out any output. Is it typically more than just
#replacing the alternator? I'm trying to get this vehicle running so I can
#give it away to a relative, so I'm hoping it doesn't turn out to need
#anything expensive.
#

Is this the original alternator?

/herb

Re: Engine code 41 remedy?
 

In article <449af419$0$65451$742ec2ed@news.sonic.net>,
Pond Scum <jhue@sonic.net> wrote:
#
#Anyone know what the most common fix for engine code 41 is ('93 ZJ)? My
#alternator is not putting out any output. Is it typically more than just
#replacing the alternator? I'm trying to get this vehicle running so I can
#give it away to a relative, so I'm hoping it doesn't turn out to need
#anything expensive.
#

Is this the original alternator?

/herb

Re: Engine code 41 remedy?
 

Herb Leong proclaimed:

> In article <449af419$0$65451$742ec2ed@news.sonic.net>,
> Pond Scum <jhue@sonic.net> wrote:
> #
> #Anyone know what the most common fix for engine code 41 is ('93 ZJ)? My
> #alternator is not putting out any output. Is it typically more than just
> #replacing the alternator? I'm trying to get this vehicle running so I can
> #give it away to a relative, so I'm hoping it doesn't turn out to need
> #anything expensive.
> #
>
> Is this the original alternator?

Dunno about the 93 but on the later ZJ, the voltage regulator is not in
the alternator, it is the engine control computer.

If the 93 is the same, there is a way to check quickly, but you need to
pull the control wire and I would be hesitant to go thru the details
unless you have a factory manual or like the smell of magic smoke.

First make sure you have a fully charged battery and the cables to the
alternator are squeaky clean, shiny, no corrosion, and tight. Also make
sure the connection to the body right near the battery is squeaky clean
and tight.

IF your 93 is the same as the 95, the way the PCM controls the
alternator voltage is by applying and removing a ground to one of the
fields.

Your diagnostic code indicates [among other things] that the PCM is
having difficulty pulling that field down to ground. There are a number
of reasons for this including a blown PCM, but it is just as often
krappy krysler wire that even Lucas would be ashamed of.

I wouldn't suggest trying to ground the field yourself without the aid
of a FSM diagram and perhaps a buddy familiar with power electrics and
definitely pull the PCM wire.

A local shop might be willing to see if they can tell the difference, if
it is the PCM, junkyards work as does eBay. The alternator isn't that
expensive either.

Re: Engine code 41 remedy?
 

Herb Leong proclaimed:

> In article <449af419$0$65451$742ec2ed@news.sonic.net>,
> Pond Scum <jhue@sonic.net> wrote:
> #
> #Anyone know what the most common fix for engine code 41 is ('93 ZJ)? My
> #alternator is not putting out any output. Is it typically more than just
> #replacing the alternator? I'm trying to get this vehicle running so I can
> #give it away to a relative, so I'm hoping it doesn't turn out to need
> #anything expensive.
> #
>
> Is this the original alternator?

Dunno about the 93 but on the later ZJ, the voltage regulator is not in
the alternator, it is the engine control computer.

If the 93 is the same, there is a way to check quickly, but you need to
pull the control wire and I would be hesitant to go thru the details
unless you have a factory manual or like the smell of magic smoke.

First make sure you have a fully charged battery and the cables to the
alternator are squeaky clean, shiny, no corrosion, and tight. Also make
sure the connection to the body right near the battery is squeaky clean
and tight.

IF your 93 is the same as the 95, the way the PCM controls the
alternator voltage is by applying and removing a ground to one of the
fields.

Your diagnostic code indicates [among other things] that the PCM is
having difficulty pulling that field down to ground. There are a number
of reasons for this including a blown PCM, but it is just as often
krappy krysler wire that even Lucas would be ashamed of.

I wouldn't suggest trying to ground the field yourself without the aid
of a FSM diagram and perhaps a buddy familiar with power electrics and
definitely pull the PCM wire.

A local shop might be willing to see if they can tell the difference, if
it is the PCM, junkyards work as does eBay. The alternator isn't that
expensive either.

Re: Engine code 41 remedy?
 

Herb Leong proclaimed:

> In article <449af419$0$65451$742ec2ed@news.sonic.net>,
> Pond Scum <jhue@sonic.net> wrote:
> #
> #Anyone know what the most common fix for engine code 41 is ('93 ZJ)? My
> #alternator is not putting out any output. Is it typically more than just
> #replacing the alternator? I'm trying to get this vehicle running so I can
> #give it away to a relative, so I'm hoping it doesn't turn out to need
> #anything expensive.
> #
>
> Is this the original alternator?

Dunno about the 93 but on the later ZJ, the voltage regulator is not in
the alternator, it is the engine control computer.

If the 93 is the same, there is a way to check quickly, but you need to
pull the control wire and I would be hesitant to go thru the details
unless you have a factory manual or like the smell of magic smoke.

First make sure you have a fully charged battery and the cables to the
alternator are squeaky clean, shiny, no corrosion, and tight. Also make
sure the connection to the body right near the battery is squeaky clean
and tight.

IF your 93 is the same as the 95, the way the PCM controls the
alternator voltage is by applying and removing a ground to one of the
fields.

Your diagnostic code indicates [among other things] that the PCM is
having difficulty pulling that field down to ground. There are a number
of reasons for this including a blown PCM, but it is just as often
krappy krysler wire that even Lucas would be ashamed of.

I wouldn't suggest trying to ground the field yourself without the aid
of a FSM diagram and perhaps a buddy familiar with power electrics and
definitely pull the PCM wire.

A local shop might be willing to see if they can tell the difference, if
it is the PCM, junkyards work as does eBay. The alternator isn't that
expensive either.