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Dale Stockstill
Dale Stockstill, Automotive Diagnostic Technician
Category: Car
Satisfied Customers: 1238
Experience:  40 years of Automotive Technical Knowledge, Teacher, Diagnostic Specialist
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Voyager: minivan..a 3.0 litre v6 the cooling fans..temperature gauge

Resolved Question:

Hi I have a 97 plymouth voyager minivan with a 3.0 litre v6 the cooling fans will not turn on
I have replaced the temperature sensor and fan relay and they still dont work also my temperature gauge stay below half even though I know the engine is running hot I would
rather not direct wire the fans to a toggle switch any ideas thanks
Submitted: 3 years ago.
Category: Car
Expert:  Dale Stockstill replied 3 years ago.

Hello,

 

My name is Dale.

 

Well, the best way to figure this one out is with a wiring diagram, and ohm meter and a volt meter.

Let me see if I can find a wiring diagram for you.

 

Have a Blessed & Productive Day!

Sincerely,

Dale

Customer: replied 3 years ago.
do you know if there is another sending unit for the gauge that runs in conjunction with the temperature sensor
Expert:  Dale Stockstill replied 3 years ago.

First of all here is a schematic and a procedure for how to test the system.

 

Cooling Fan Relay
1.Turn the ignition OFF.

2.Remove the relay.

3.Locate the two terminals on the relay, which are connected to the coil windings. Check the relay coil for continuity. Connect the common meter lead to terminal 85 and positive meter lead to terminal 86. There should be continuity. If not, replace the relay.


Use an ohmmeter to check for circuit continuity of the coil in the relay

Click to Enlarge


http://content.chiltonsonline.com/content/images/7924/images/79249g15.pdf

4.Check the operation of the internal relay contacts.

■Connect the meter leads to terminals 30 and 87. Meter polarity does not matter for this step.

■Apply positive battery voltage to terminal 86 and ground to terminal 85. The relay should click as the contacts are drawn toward the coil and the meter should indicate continuity. Replace the relay if your results are different.

If the relay functions properly during this test, inspect the coolant temperature sensor and the cooling fan system wiring for defects.

Now, if that all tests OK then you will need to do a backward trace from the wiring diagram to find out where the (OPEN Circuit is). They tend to come out 50% of the time as a bad ground or a electronic problem. You need to hook up a OBD II Scanner to the system and check for codes BEFORE you get to deep into the harness.

 

There are 3 diagrams that relate to the Cooling system, fans, relays, BCM and ECM.

Here they are on Adobe PDF Format so you can zoom them to size and print them of and take them to the vehicle.

 

#1-
http://content.chiltonsonline.com/content/images/WD/Chrysler/235/WD_Chrysler_235232.pdf

 

#2-
http://content.chiltonsonline.com/content/images/WD/Chrysler/235/WD_Chrysler_235232.pdf

 

#3-
http://content.chiltonsonline.com/content/images/WD/Chrysler/235/WD_Chrysler_235232.pdf

 

This should give you everything you need and more to trace down the circuit and find the problem.

Sincerely,

Dale

 

Expert:  Dale Stockstill replied 3 years ago.

First of all here is a schematic and a procedure for how to test the system.

 

Cooling Fan Relay
1.Turn the ignition OFF.

2.Remove the relay.

3.Locate the two terminals on the relay, which are connected to the coil windings. Check the relay coil for continuity. Connect the common meter lead to terminal 85 and positive meter lead to terminal 86. There should be continuity. If not, replace the relay.


Use an ohmmeter to check for circuit continuity of the coil in the relay

Click to Enlarge


http://content.chiltonsonline.com/content/images/7924/images/79249g15.pdf

4.Check the operation of the internal relay contacts.

■Connect the meter leads to terminals 30 and 87. Meter polarity does not matter for this step.

■Apply positive battery voltage to terminal 86 and ground to terminal 85. The relay should click as the contacts are drawn toward the coil and the meter should indicate continuity. Replace the relay if your results are different.

If the relay functions properly during this test, inspect the coolant temperature sensor and the cooling fan system wiring for defects.

Now, if that all tests OK then you will need to do a backward trace from the wiring diagram to find out where the (OPEN Circuit is). They tend to come out 50% of the time as a bad ground or a electronic problem. You need to hook up a OBD II Scanner to the system and check for codes BEFORE you get to deep into the harness.

 

There are 3 diagrams that relate to the Cooling system, fans, relays, BCM and ECM.

Here they are on Adobe PDF Format so you can zoom them to size and print them of and take them to the vehicle.

 

#1-
http://content.chiltonsonline.com/content/images/WD/Chrysler/235/WD_Chrysler_235232.pdf

 

#2-
http://content.chiltonsonline.com/content/images/WD/Chrysler/235/WD_Chrysler_235232.pdf

 

#3-
http://content.chiltonsonline.com/content/images/WD/Chrysler/235/WD_Chrysler_235232.pdf

 

This should give you everything you need and more to trace down the circuit and find the problem.

Sincerely,

Dale

 

Expert:  Dale Stockstill replied 3 years ago.

First of all here is a schematic and a procedure for how to test the system.

 

Cooling Fan Relay
1.Turn the ignition OFF.

2.Remove the relay.

3.Locate the two terminals on the relay, which are connected to the coil windings. Check the relay coil for continuity. Connect the common meter lead to terminal 85 and positive meter lead to terminal 86. There should be continuity. If not, replace the relay.


Use an ohmmeter to check for circuit continuity of the coil in the relay

Click to Enlarge


http://content.chiltonsonline.com/content/images/7924/images/79249g15.pdf

4.Check the operation of the internal relay contacts.

■Connect the meter leads to terminals 30 and 87. Meter polarity does not matter for this step.

■Apply positive battery voltage to terminal 86 and ground to terminal 85. The relay should click as the contacts are drawn toward the coil and the meter should indicate continuity. Replace the relay if your results are different.

If the relay functions properly during this test, inspect the coolant temperature sensor and the cooling fan system wiring for defects.

Now, if that all tests OK then you will need to do a backward trace from the wiring diagram to find out where the (OPEN Circuit is). They tend to come out 50% of the time as a bad ground or a electronic problem. You need to hook up a OBD II Scanner to the system and check for codes BEFORE you get to deep into the harness.

 

There are 3 diagrams that relate to the Cooling system, fans, relays, BCM and ECM.

Here they are on Adobe PDF Format so you can zoom them to size and print them of and take them to the vehicle.

 

#1-
http://content.chiltonsonline.com/content/images/WD/Chrysler/235/WD_Chrysler_235232.pdf

 

#2-
http://content.chiltonsonline.com/content/images/WD/Chrysler/235/WD_Chrysler_235232.pdf

 

#3-
http://content.chiltonsonline.com/content/images/WD/Chrysler/235/WD_Chrysler_235232.pdf

 

This should give you everything you need and more to trace down the circuit and find the problem.

Sincerely,

Dale

 

Expert:  Dale Stockstill replied 3 years ago.

First of all here is a schematic and a procedure for how to test the system.

 

Cooling Fan Relay
1.Turn the ignition OFF.

2.Remove the relay.

3.Locate the two terminals on the relay, which are connected to the coil windings. Check the relay coil for continuity. Connect the common meter lead to terminal 85 and positive meter lead to terminal 86. There should be continuity. If not, replace the relay.


Use an ohmmeter to check for circuit continuity of the coil in the relay

Click to Enlarge


http://content.chiltonsonline.com/content/images/7924/images/79249g15.pdf

4.Check the operation of the internal relay contacts.

■Connect the meter leads to terminals 30 and 87. Meter polarity does not matter for this step.

■Apply positive battery voltage to terminal 86 and ground to terminal 85. The relay should click as the contacts are drawn toward the coil and the meter should indicate continuity. Replace the relay if your results are different.

If the relay functions properly during this test, inspect the coolant temperature sensor and the cooling fan system wiring for defects.

Now, if that all tests OK then you will need to do a backward trace from the wiring diagram to find out where the (OPEN Circuit is). They tend to come out 50% of the time as a bad ground or a electronic problem. You need to hook up a OBD II Scanner to the system and check for codes BEFORE you get to deep into the harness.

 

There 1 diagram that relates to the Cooling system, fans, relays, BCM and ECM.

Here they are on Adobe PDF Format so you can zoom them to size and print them of and take them to the vehicle.

 

#1-
http://content.chiltonsonline.com/content/images/WD/Chrysler/235/WD_Chrysler_235232.pdf

 

The Instrument Cluster List the following diagnostic codes for a coolant gauge problem. Not sure (Without styudying the diagram I gave you whether they are using the same sensor or not. Usually there is a seperate sensor for the guage.

Instrument Cluster Diagnostic Trouble Code (DTC) Table

 

Temperature Gauge Calibration Points

First Mark-Cold {C}

Second Mark-Low Normal

Third Mark-High Normal

Fourth Mark-Hot {H}

0) preLoad.src = ctl00_cphLeft_chRepairTreeNav_tvTOC_ImageArray; } ctl00_cphLeft_chRepairTreeNav_tvTOC_Data.lastIndex = 73; ctl00_cphLeft_chRepairTreeNav_tvTOC_Data.populateLog = theForm.elements['ctl00_cphLeft_chRepairTreeNav_tvTOC_PopulateLog']; ctl00_cphLeft_chRepairTreeNav_tvTOC_Data.treeViewID = 'ctl00$cphLeft$chRepairTreeNav$tvTOC'; ctl00_cphLeft_chRepairTreeNav_tvTOC_Data.name = 'ctl00_cphLeft_chRepairTreeNav_tvTOC_Data'; // -->

  • Code 110-Memory Fault In Cluster

  • Code 111-Calibration Fault In Cluster

  • Code 905-No CCD BUS Messages From Transmission Control Module (TCM)

  • Code 920-No CCD Messages From Body Control Module (BCM)

  • Code 921-Odometer Fault From BCM

  • Code 940-No CCD BUS Messages From Powertrain Control Module (PCM)

  • Code 999-End Of Codes

This should give you everything you need and more to trace down the circuit and find the problem.

Sincerely,

Dale

 

Once I have answered your question, Please Don't forget to "Accept", I do not get paid unless you do accept my answer

Customer: replied 3 years ago.
ok relays work correctly stumped
Expert:  Dale Stockstill replied 3 years ago.

Run the OBD II Scanner on the system.

Dale

Do you know someone that has a scanner? I have been told that "Auto Zone will scan it for you. You needd to get them to print out what it says. NOTE: SO NOT PURCHASE A BUNCH OF SENSORS FROM THEM UNTIL YOU FIND OUT IF IT IS A WIRING PROBLEM OR A SENSOR PROBLEM. THEY LOVE TO SELL YOU A BUNCH OF SENSORS YOU SO NOT NEED. NO RETURN ON ELECTRICL/ELECTRONIC PARTS.

Dale

Customer: replied 3 years ago.

I ran a scanner shows nothing this is a real stumper

 

Expert:  Dale Stockstill replied 3 years ago.

Run the OBD II Scanner on the system.

Dale

Do you know someone that has a scanner? I have been told that "Auto Zone will scan it for you. You needd to get them to print out what it says. NOTE: SO NOT PURCHASE A BUNCH OF SENSORS FROM THEM UNTIL YOU FIND OUT IF IT IS A WIRING PROBLEM OR A SENSOR PROBLEM. THEY LOVE TO SELL YOU A BUNCH OF SENSORS YOU SO NOT NEED. NO RETURN ON ELECTRICL/ELECTRONIC PARTS.

Dale

Since you have run a OBD II not OBD I scaner you will have to trace it out with the wiring diagram I sent you IF YOU HAVE A GOOD SCANNER. Many of the inecpensive scanners will not read the codes in question.

Expert:  Dale Stockstill replied 3 years ago.
Since you have run a OBD II not OBD I scaner you will have to trace it out with the wiring diagram I sent you IF YOU HAVE A GOOD SCANNER. Many of the inecpensive scanners will not read the codes in question.

Dale
Expert:  Dale Stockstill replied 3 years ago.

Is there any other information your need with repsect to this issue?

Dale

Once I have answered your question, Please Don't forget to "Accept", I do not get paid unless you do accept my answer.

Expert:  Dale Stockstill replied 3 years ago.

Hello Again,

 

After sleeping on this one I decided to look and see if I could find any more diagrams that are more specific to your problem. Here is one that I think may help you:


http://www.e-toolbox.com/ads/wiring/va087881.pdf

 


http://www.e-toolbox.com/ads/wiring/va087882.pdf

hope these help. I really think you have a bad ground some where (Chrysler's are real BAD about doing this) ! The tip off for a bad ground is the voltages will be down 1/3 to half of their normal values. For example a line or circuit to a injector should be between 5.0 & 6.0 volts. If there is a dirty or corroded ground the value will be maybe 3.7 to 4.2 volts. I wish I was there to help you but I am not so you are going to have to trace it out yourself.

 

What kind of a Brand of a scanner are you using and what did it cost (roughly speaking ?

Sincerely,

Dale

Are you a technician in a shop or a regular customer?

I

 

Dale Stockstill, Automotive Diagnostic Technician
Category: Car
Satisfied Customers: 1238
Experience: 40 years of Automotive Technical Knowledge, Teacher, Diagnostic Specialist
Dale Stockstill and 3 other Car Specialists are ready to help you
Expert:  Dale Stockstill replied 3 years ago.
Was there something else you needed?

Dale

Once I have answered your question, Please Don't forget to "Accept", I do not get paid unless you do accept my answer.

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