Question about 1994 Dodge Caravan

1 Answer

Radio fan control realay circuit not running - 1994 Dodge Caravan

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 10,421 Answers

Check and fix/replace your Temperature sensor and/or fan relay.

Posted on Aug 06, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

When i start my 2008 Cadillac sts i get a notification that engine hot A./C off. Even though it is the first time i stated it today


ENGINE HOT - AC OFF
Cooling System Description and Operation

you must have a cooling system problem of some sort !

Do the cooling fans come on when A/C is switched on ? Fan's should come on ! Does your vehicle have two or three cooling fan's ?
Cooling Fan Control - Two Fan System
The engine cooling fan system consists of 2 puller type electrical cooling fans and 3 fan relays. The relays are arranged in a series parallel (S/P) configuration that allows the engine control module (ECM) to operate both fans together at low or high speeds. The cooling fans and fan relays receive battery positive voltage from the underhood fuse block. The ground path is provided at G104.
During low speed operation, the ECM supplies the ground path for the low speed fan relay through the low speed cooling fan relay control circuit. This energizes the low speed fan relay coil, closes the relay contacts, and supplies battery positive voltage from the low fan fuse through the cooling fan motor supply voltage circuit to the left cooling fan. The ground path for the left cooling fan is through the cooling fan S/P relay and the right cooling fan. The result is a series circuit with both fans running at low speed.
During high speed operation the ECM supplies the ground path for the low speed fan relay through the low speed cooling fan relay control circuit. After a 3 second delay, the ECM supplies a ground path for the high speed fan relay and the cooling fan S/P relay through the high speed cooling fan relay control circuit. This energizes the cooling fan S/P relay coil, closes the relay contacts, and provides a ground path for the left cooling fan. At the same time, the high speed fan relay coil is energized closing the relay contacts, and provides battery positive voltage from the high fan fuse on the cooling fan motor supply voltage circuit, to the right cooling fan. During high speed fan operation, both engine cooling fans have their own ground path. The result is a parallel circuit with both fans running at high speed.
The ECM commands the low speed cooling fans ON under the following conditions:
• Engine coolant temperature exceeds approximately 94.5°C (202°F).
• A/C refrigerant pressure exceeds 1447 kPa (210 psi).
• After the vehicle is shut OFF, if the engine coolant temperature at key-off is greater than 101°C (214°F), the low speed fans will run for a minimum of 60 seconds. After 60 seconds, if the coolant temperature drops below 101°C (214°F), the fans will shut OFF. The fans will automatically shut OFF after 3 minutes, regardless of coolant temperature.
The ECM commands the high speed fans ON under the following conditions:
• Engine coolant temperature exceeds approximately 104.25°C (220°F).
• A/C refrigerant pressure exceeds approximately 1824 kPa (265 psi).
• When certain DTCs set
At idle and very low vehicle speeds the cooling fans are only allowed to increase in speed, if required. This ensures idle stability by preventing the fans from cycling between high and low speed.
Cooling

Having a qualified professional technician check it out would be your best bet ! Hooking up a factory or professional type scanner an check data input's an DTC'S - diagnostic trouble codes .

Diagnostic Starting Point - Engine Cooling
Begin the system diagnosis with the diagnostic system check. Refer to Diagnostic System Check - Vehicle . The Diagnostic System Check - Vehicle will provide the following information:
• The identification of the control modules which command the system
• The ability of the control modules to communicate through the serial data circuits
• The identification of any stored DTCs and their status
The use of the Diagnostic System Check - Vehicle will identify the correct procedure for diagnosing the system and where the procedure is located.

DTC P0480: Cooling Fan Relay 1 Control Circuit
DTC P0481: Cooling Fan Relay 2 Control Circuit
DTC P0480: Cooling Fan Relay 1 Control Circuit
DTC P0481: Cooling Fan Relay 2 Control Circuit
DTC P0691: Cooling Fan Relay 1 Control Circuit Low Voltage
DTC P0692: Cooling Fan Relay 1 Control Circuit High Voltage
DTC P0693: Cooling Fan Relay 2 Control Circuit Low Voltage
DTC P0694: Cooling Fan Relay 2 Control Circuit High Voltage
DTC P1258: Engine Coolant Overtemperature - Protection Mode Active
DTC P2600: Auxiliary Coolant Pump Relay Control Circuit
DTC P2601: Auxiliary Coolant Pump Performance
DTC P2602: Auxiliary Coolant Pump Relay Control Circuit Low Voltage
DTC P2603: Auxiliary Coolant Pump Relay Control Circuit High Voltage

Dec 10, 2017 | Cadillac Cars & Trucks

1 Answer

I have a 1985 corvett my fans will not come on how can i fix it


The first thing i would do is to unplug the fan and see it it is coroaded or not. Then i would run the car and wait untill it warmed up and put a light tester on the hot wire to the fan and the other end to a ground. If the light comes on the the problem is with your fan motor and not the relay. The relay is locaded in the fuse pannel under the hood. When you open it , it will tell you which one it is.

Nov 26, 2012 | 1985 Chevrolet Corvette

1 Answer

Electrical


The radio and a/c are on two different circuits other than both being powered thru the key switch. But they both share the same ground connections.
Its possible the two problems are not connected.
I would check the ground circuits for the radio and the blower motor. You may need a shop manual to find the wiring diagrams you will need.
On import cars, the blower motor speed is usually controlled by a resistor in the ground circuit. So if that ground is not good, the fan will run thru the relay but not thru the resistor. The high blower relay bypasses the resistor.

Aug 02, 2012 | 1989 Nissan Maxima

2 Answers

Diagnostic code for my 2007 saturn ion says p0480 cooling fan 1 control circuit malfunction. what does this mean.


WHAT IT MEANS YOUR FAN CONTROL RELAY CONTROL CIRCUIT IS OPEN OR SHORTED TO GROUND. FAN CONTROL RELAY CONTROL CIRCUIT IS SHORTED TO SYSTEM POWER. THE FAN CONTROL RELAY POWER CIRCUIT IS OPEN CHECK COOL FAN 1 FUSE. FAN CONTROL RELAY IS DAMAGED OR HAS FAILED. PCM HAS FAILED.I LISTED ALL POSSIBLE CAUSES TO CODE PO480.

Jul 05, 2011 | Saturn Ion Cars & Trucks

1 Answer

Fan realay 2001 dodge caravan


The fan relay is located in the engine compartment there is a cover that underneath will identify the location

Apr 24, 2011 | Dodge Caravan Cars & Trucks

1 Answer

Fan running after car is turned off. car dies and wont start, but its getting power from battery


there is a fan timer module that runs the fan if the temperature is 194 or hotter. if the module,which has internal relays fails the fan will not shut off.if you want a cheap fix,wire a relay in series with one of the fan wires so that the relay only is activated by a source of switched power from the ignition..that relay will pull about 200 ma only,so wire the relay power to a circuit like a switched power outlet,lighter or other circuit with no computers on it to control the relay.the radio circuit switched power is a good one to use,and make sure to use a 25 amp relay ,as the fan pulls about 10 amps.a bosch 4 pin will work fine.

Apr 26, 2010 | 1990 Honda Prelude

2 Answers

Where is the cooling fan relay located in a 1994 ford mustang gt ?


is the same relay that works with the fuel pump it's call constant control relay module

Sep 04, 2009 | 1994 Ford Mustang

Not finding what you are looking for?
1994 Dodge Caravan Logo

Related Topics:

40 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dodge Experts

yadayada
yadayada

Level 3 Expert

77169 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22258 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Dodge Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...