Top 10 2005 Chrysler Pacifica Questions & Answers

The P0700 refers to a Transmission Control System Malfunction. It's a generic code in that it's a warning to have your transmission computer scanned to get the precise codes in order to diagnose the problem further. Apparently, transmission issues are common in all Chrysler products in the mid 2000's . Have the car scanned for a more specific code and post back your results for further instruction.

I have a 2004 Pacifica and mine is on the drivers side front, underneath between the bumper and the wheel splash guard. You will need to remove the splash guard ti access the PCM. Not very hard at all. Replacement time for a handy DIYer: about 1/2 hour. Good luck!!

The resistor block is the likely problem; this is from the 2004 manual and it should be the same in the 2005.

2004 Chrysler Pacifica Heater Fan Resistor/Power Module

POWER MODULE
DESCRIPTION
A blower power module is used on this model. (Fig. 19). The blower power module is installed in a
mounting hole in the evaporator housing, directly behind the glove box opening of the instrument panel. The module consists of a molded plastic mounting plate with two integral connector receptacles.

Concealed behind the mounting plate within the evaporator housing is the power module electronic circuitry and a large finned, heat sink. The module mounting plate is secured with two screws to the evaporator housing and is accessed for service by rolling down the glove box from the instrument panel.

The power module heat sink will get hot when in use. Do not touch the heat sink if the blower motor has been running. The blower power module cannot be adjusted or repaired and, if faulty or damaged, it must be replaced.

OPERATION
The blower power module is connected to the vehicle electrical system through a dedicated lead and connector from the instrument panel wire harness. A second connector receptacle receives a wire lead connector from the blower motor. The blower power module allows the microprocessor-based Automatic Temperature Control (ATC) heater-A/C control module to calculate and provide infinitely variable blower motor speeds based upon ATC programming which uses a Pulse Width Modulated (PWM) circuit strategy.

The PWM voltage is applied to a comparator circuit which compares the PWM signal voltage to the blower motor feedback voltage. The resulting output drives the power module circuitry, which adjusts the voltage output received from the blower motor relay to change or maintain the desired blower speed. The blower power module is diagnosed using a DRBIIIt scan tool. Refer to Body Diagnostic Procedures.

REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

(1) Disconnect and isolate the battery negative cable.
(2) Open the glove box.
(3) Flex both sides of the glove box bin inward near the top far enough for the rubber glove box stop bumpers to clear the sides of the glove box opening, then roll the glove box downward.
(4) Reach through the glove box opening to access and disconnect the instrument panel wire harness connector for the power module from the module connector receptacle.
(5) Reach through the glove box opening to access and disconnect the blower motor wire harness connector from the power module connector receptacle.
(6) Remove the two screws that secure the power module to the evaporator housing.
(7) Remove the power module from the evaporator housing.

INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

(1) Position the power module into the evaporator housing.
(2) Install and tighten the two screws that secure the power module to the evaporator housing. Tighten the screws to 2 N•m (17 in. lbs.).
(3) Reconnect the blower motor wire harness connector to the power module connector receptacle.
(4) Reconnect the instrument panel wire harness connector for the power module to the module connector receptacle.
(5) Flex both sides of the glove box bin inward near the top far enough for the rubber glove box stop bumpers to clear the sides of the glove box opening, then roll the glove box upward.
(6) Close and latch the glove box.
(7) Reconnect the battery negative cable.


Also, its possile that you need to view similar problems in THIS LINK.

Hope this helps; keep us updated.

The location is different depending on if you have a 5 or 6 seater vehicle. I gave you both loctions (see pictures below). This should be in your owners manual if you have one. If you need an owners manual for your vehicle, you can email me at [email protected] with your make, model and year and I will be happy to email you a copy of it. No woriies it won't cost you anything. Anyhow, I hope this helps you and good luck. Here's your pictures:

5.5 qt with dry filter.

Hope helps (remember to rate this answer).

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There is not a mount on the front

Here it is

Scan for emission fault then follow the correct diagnostic procedure it may have a large leak in the emissions some where

Hi Anonymous, Im glad to help!

The U110C is a BUS Message and usually has to do with both PCM and BCM, because its a lose of BUS Signal between the PCM and the BCM.

FIRST THING TO TRY:
The first thing I would try is remove the negative battery cable for 20 seconds then replace it. NEXT: Start the engine several times then let idle for 10 to 20 minutes then start it several more times and if the code doesn't return and the check engine light stays out, simple drive it for awhile like you normally would. If the code come right back, below is some common problems.

COMMON CAUSES of U110C:
(1) Communication with BCM is lost / See if you can communicate with the BCM.
(2) PCI Bus Circuit open between PCM and BCM / Check the positive and negative bus signal at both the PCM and BCM.
(3) BCM
(4) PCM
(5) Fuel Level Bus Message is missing

Obviously, all these issues must be tested to see which one is causing the problem. BUT first try the battery cable removal and see what happens.

Let me know the out come and I'll try to help further.
Hope this helps and have an awesome day!