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2009 ACCESSORIES & EQUIPMENT

Power Mirrors - Service Information - Grand Caravan, Town & Country

DESCRIPTION

Fig. 1: Automatic Dimming Rear View Mirrors
Courtesy of CHRYSLER LLC

Driver and passenger power operated outside rear view mirrors are standard factory-installed equipment. In
addition, automatic dimming rear view mirrors, both inside and a driver side outside are available as optional
equipment. The power mirror system for this vehicle includes the following major components, which are
described in further detail elsewhere in this service information:



Automatic Dimming Rear View Mirrors (2) - The optional automatic dimming inside rear view mirror
is secured to a mounting button on the inside of the windshield glass near the upper windshield opening
header. This is the same mounting button that is used for mounting the standard prismatic inside rear view
mirror. The optional automatic dimming outside rear view mirror is only available for the driver side
door. The automatic dimming outside rear view mirror is secured to the same mounting flag on the front
door panel and in the same manner that is used to mount the standard equipment outside rear view
mirrors.



Front Door Control Modules - Vehicles that use the low current front door power switch configuration
also have a front door control module for each front door. The front door control modules are concealed
behind the door trim panels on the front door hardware module carrier. Refer to Electrical - Electronic
Control Modules/Electronic Control Modules/MODULE, Door - Description .



Front Door Power Switch Modules - Front door power switch modules are used in both primary system

2009 Dodge Grand Caravan SE

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configurations: high current and low current. The outputs of the switches will identify the configuration
type being used. In the high current configuration the switch outputs are hard wired directly to the power
mirror, power window and power lock motors. In the low current configuration the switch outputs are
hard wired to the driver or passenger front door control modules, which then control the high current
outputs to the power mirror, power window and power lock motors. Refer to Electrical - Power
Systems/Power Windows/SWITCH, Power Window - Description



Power Folding Mirror Switch - The power folding mirror switch is used only on vehicles manufactured
for certain export markets where power foldaway mirrors are required equipment. The power folding
mirror switch is integral to the driver front door power switch module located on the driver side front
door trim panel and is only serviced as a unit with the switch module.



Power Mirror Switches - The power mirror system includes two selector switches and an adjuster
switch that are located on the driver front door trim panel and are only serviced as an integral part of their
respective driver front door power switch module. Refer to Electrical - Power Systems/Power
Windows/SWITCH, Power Window - Description



Power Outside Rear View Mirrors (1) - Power outside rear view mirror units are mounted to the mirror
flag at the front belt line of each front door window opening. Many variations of both the driver and
passenger mirror are available, depending upon both trim and other optional equipment in the vehicle.

In the low current switch configuration, the front door power switch modules and the front door control
modules each contain a microprocessor and programming that allow them to communicate with each other
using a Local Interface Network (LIN) data bus. The front door control modules and the automatic dimming
inside rear view mirror each contain a microprocessor and programming that allow them to communicate with
each other, with other electronic modules in the vehicle and with a diagnostic scan tool connected to the 16-way
Data Link Connector (DLC) using the Controller Area Network (CAN) Interior High Speed (IHS) data bus.
Refer to Electrical - Electronic Control Modules/Electronic Control Modules/COMMUNICATION -
Description .

Hard wired circuitry connects the power mirror system components to each other through the electrical system
of the vehicle. These hard wired circuits are integral to several wire harnesses, which are routed throughout the
vehicle and retained by many different methods. These circuits may be connected to each other, to the vehicle
electrical system and to the power mirror system components through the use of a combination of soldered
splices, splice block connectors and many different types of wire harness terminal connectors and insulators.
Refer to SYSTEM WIRING DIAGRAMS for Town & Country and/or SYSTEM WIRING DIAGRAMS for
Grand Caravan . The wiring information includes wiring diagrams, proper wire and connector repair
procedures, further details on wire harness routing and retention, as well as pin-out and location views for the
various wire harness connectors, splices and grounds.

OPERATION

POWER OPERATED OUTSIDE REAR VIEW MIRRORS

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Fig. 2: Driver Door Power Switch Module
Courtesy of CHRYSLER LLC

The power operated outside rear view mirrors are connected to battery current at all times. Each mirror head
contains two electric motors, two drive mechanisms, an electric heating element and the mirror glass. First, a
mirror selector switch button (2) is depressed in the driver door power switch module (1) to determine whether
the mirror adjuster switch (3) will have control over the right or left mirror. If the vehicle is equipped with the
high current door power switch module configuration, hard wired ground and battery current outputs to each
power mirror motor determine whether the horizontal or the vertical motor will be operated and the polarity of
those outputs control the direction in which the motor will move the drive unit and mirror glass.

Power mirror and mirror switch functionality is the same with the low current configuration; however, the
driver door power switch module sends power mirror switch status messages over the Local Interface Network
(LIN) data bus to the driver front door control module. The driver front door control module then controls the
high current outputs to the driver door mirror motors or sends electronic request messages over the Controller
Area Network (CAN) Interior High Speed (IHS) data bus to the passenger front door control module to control
high current outputs to the passenger door mirror motors.

AUTOMATIC DIMMING REAR VIEW MIRRORS

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Fig. 3: Automatic Dimming Inside Rear View Mirror
Courtesy of CHRYSLER LLC

An automatic dimming inside rear view mirror (1) is an available option. The automatic dimming mirror switch
(3) allows the driver a manual control of whether the automatic dimming feature is operational. This switch is a
momentary push button switch located on the lower rearward-facing surface of the mirror housing. When ON is
selected, a green Light-Emitting Diode (LED) (2) on the mirror housing adjacent to the switch illuminates to
indicate that the automatic dimming mirror is turned ON. When OFF is selected, the LED is extinguished. If the
vehicle is equipped with an optional driver side automatic dimming outside rear view mirror, the operation of
that mirror is controlled by the same switch and inputs as the inside rear view mirror.

The automatic dimming mirrors are able to automatically change their reflectance level. A thin layer of
electrochromic material between two pieces of conductive glass make up the face of the mirror. Two photocell
sensors are used to monitor light levels and adjust the reflectance of both the inside and driver side outside
mirrors. This change in reflectance helps to reduce the glare of headlamps approaching the vehicle from the
rear.

The ambient photocell light sensor faces forward, to detect the outside light levels. The headlamp photocell
light sensor (4) is located on the mirror housing to one side of the switch and facing rearward, to detect the light
level received at the rear window side of the mirror. When the difference between the two light levels becomes
too great (the light level received at the rear of the mirror is much higher than that at the front of the mirror), the
mirror begins to darken. The mirror also monitors the backup lamp circuit, and will automatically disable its
self-dimming feature whenever the transmission gear selector is in the REVERSE position.

MIRROR, AUTOMATIC DAY AND NIGHT

DESCRIPTION

An automatic dimming (day and night) inside rear view mirror is an available factory-installed option for this

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vehicle. Vehicles equipped with the automatic dimming inside rear view mirror are also available with an
optional factory-installed automatic dimming outside rear view mirror for the driver side of the vehicle. In
vehicles so equipped, this system will automatically change the reflectance of the inside and driver side outside
rear view mirrors to protect the driver from the unwanted headlight glare of trailing vehicles while driving at
night. Following are general descriptions of this optional equipment.

INSIDE

Fig. 4: Automatic Dimming Inside Rear View Mirror
Courtesy of CHRYSLER LLC

The automatic dimming inside rear view mirror (1) is able to automatically change its reflectance. The
automatic dimming inside rear view mirror system is a completely self-contained unit that replaces the standard
equipment manual prismatic inside rear view mirror. The two layers of conductive mirror glass with a thin layer
of electrochromic material between them, the mirror switch (3), a Light Emitting Diode (LED) power indicator
(2), two photocell light sensors (2 and 5), the mirror connector receptacle (6) and the electronic mirror control
circuitry are all self-contained within the inside rear view mirror housing.

The automatic dimming mirror is secured to the same mounting button on the inside of the windshield glass and
in the same manner that is used to mount the standard equipment manual prismatic mirrors. The mirror is
connected to the vehicle electrical system through a dedicated take out and connector of the overhead wire
harness. The automatic dimming inside rear view mirror receives battery current through a fused ignition switch
output (run-start) circuit and a fuse in the Totally Integrated Power Module (TIPM), and will only operate when
the ignition switch is in the ON or START positions.

The automatic dimming inside rear view mirror sensitivity cannot be repaired or adjusted. If any component of
this unit is ineffective or damaged, the entire inside rear view mirror unit must be replaced. For service
procedures, refer to Body/Interior/MIRROR, Rearview - Removal and Body/Interior/MIRROR, Rearview
- Installation .

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OUTSIDE

The automatic dimming driver side outside rear view mirror is able to automatically change its reflectance. The
automatic dimming outside rear view mirror replaces the standard equipment outside rear view mirror. The two
layers of conductive mirror glass with a thin layer of electrochromic material between them is contained within
the outside rear view mirror glass case. However, this mirror relies upon the photocells and mirror control
circuitry of the automatic dimming inside rear view mirror to control its reflectance.

The automatic dimming outside rear view mirror is secured to the same mounting flag on the front door panel
and in the same manner that is used to mount the standard equipment outside rear view mirrors. The mirror is
connected to the vehicle electrical system through a dedicated take out and connector of the front door wire
harness. The automatic dimming circuitry of the outside rear view mirror receives current through auto
day/night mirror feed (+) and return (-) circuits from the inside rear view mirror, and will only operate when the
ignition switch is in the ON or START positions.

The automatic dimming outside rear view mirror sensitivity cannot be repaired or adjusted. If any component of
this unit is ineffective or damaged, the entire outside rear view mirror unit must be replaced. For service
procedures, refer to Body/Exterior/MIRROR, Outside Rearview - Removal and Body/Exterior/MIRROR,
Outside Rearview - Installation .

OPERATION

Both the inside and outside automatic dimming mirrors receive battery current through a fused ignition switch
output (run/start) circuit and fuse in the Totally Integrated Power Module (TIPM), and will only operate when
the ignition switch is in the ON or START positions.

INSIDE

The switch on the automatic dimming inside rear view mirror provides the vehicle operator with a manual
control of whether the automatic dimming feature is operational. When AUTO is selected, a green Light-
Emitting Diode (LED) indicator to the right of the mirror switch is illuminated. However, if the mirror is tuned
OFF manually, the LED indicator is extinguished. However, the mirror will always turn back ON by default at
the onset of a new ignition ON cycle. The automatic dimming mirror circuitry also senses the backup lamp
circuit, and will automatically disable its self-dimming feature whenever the transmission gear selector is in the
REVERSE position.

The ambient photocell sensor of the mirror faces forward, to detect the outside light levels through the
windshield glass. A second headlamp photocell sensor is located just to the left of the mirror switch and facing
rearward, to detect the light level received at the rear window side of the mirror. When the mirror control
circuitry detects that the difference between the two sensed light levels has become too great (the light level
received at the rear of the mirror is much higher than that at the front of the mirror) the mirror begins to darken.
A thin layer of electrochromic material between two pieces of conductive glass make up the face of the mirror.

On vehicles equipped with an optional driver side automatic dimming outside rear view mirror, the signal to
control the dimming of that mirror is generated by the automatic dimming inside rear view mirror circuitry.
That signal is then delivered to the driver side outside rear view mirror on two hard wired circuits.

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OUTSIDE

The driver side automatic dimming outside mirror is operated by the same controls and circuitry as the
automatic inside rear view mirror. When the automatic inside rear view mirror is switched ON or OFF, the
automatic dimming outside mirror is likewise switched ON or OFF. Just as in the automatic inside rear view
mirror, a thin layer of electrochromic material between two pieces of conductive glass make up the face of the
automatic dimming outside mirror. However, the signal to control the dimming of the outside mirror is
generated by the automatic dimming inside rear view mirror control circuitry based upon the inputs from the
two photocell sensors integral to the inside mirror. That signal is then delivered to the driver side outside rear
view mirror on two hard wired circuits.

DIAGNOSIS AND TESTING

AUTOMATIC DIMMING MIRRORS

For complete circuit diagrams, refer to SYSTEM WIRING DIAGRAMS for Town & Country and/or
SYSTEM WIRING DIAGRAMS for Grand Caravan . The wiring information includes wiring diagrams,
proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out
information and location views for the various wire harness connectors, splices and grounds.

1. Check the fused ignition switch output (run/start) fuse in the Totally Integrated Power Module (TIPM). If

OK, go to 2. If not OK, repair the shorted circuit or component as required and replace the ineffective
fuse.

2. Turn the ignition switch to the ON position. Check for battery voltage at the fused ignition switch output

(run/start) fuse in the TIPM. If OK, go to

. If not OK, repair the open fused ignition switch output

(run/start) circuit to the run-start relay in the TIPM as required.

3. Disconnect the overhead wire harness connector from the automatic dimming inside rear view mirror.

Check for battery voltage at the fused ignition switch output (run-start) circuit cavity of the overhead wire
harness connector for the mirror. If OK, go to 4. If not OK, repair the open fused ignition switch output
(run/start) circuit to the fuse in the TIPM as required.

4. Turn the ignition switch to the OFF position. Check for continuity between the ground circuit cavity of

the overhead wire harness connector for the automatic dimming inside rear view mirror and a good
ground. There should be continuity. If OK, go to 5. If not OK, repair the open circuit to ground as
required.

5. Turn the ignition switch to the ON position. Set the parking brake. Place the transmission gear selector

lever in the REVERSE position. Check for battery voltage at the backup lamp switch output circuit cavity
of the overhead wire harness connector for the automatic dimming inside rear view mirror. If OK,
reconnect the overhead wire harness connector to the mirror and go to 6. If not OK, repair the open
backup lamp switch output circuit as required.

6. Place the transmission gear selector lever in the NEUTRAL position. Place the automatic dimming inside

rear view mirror switch in the ON (green LED indicator illuminated) position. Cover the forward facing
ambient photocell light sensor to keep out any ambient light.

NOTE:

The ambient photocell sensor must be covered completely, so that no light
reaches the sensor. Use a finger pressed tightly against the sensor, or
cover the sensor completely with electrical tape.

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7. Shine a light into the rearward facing headlamp photocell light sensor. The automatic dimming mirror

glass should darken within 2 minutes if testing for the first time. For an immediate response, turn the
mirror switch to the OFF position and back to the ON position with the forward-facing ambient light
sensor still covered. This defeats the daylight detection logic of the mirror. If OK, go to 8. If not OK,
replace the ineffective mirror unit.

8. With the mirror darkened, place the transmission gear selector lever in the REVERSE position. The

automatic dimming mirror glass should return to its normal reflectance. If not OK, replace the ineffective
mirror unit.

BENCH TESTING

Bench testing of both the inside and the driver side outside mirrors can be done if proper care is exercised.
Connect the inside mirror ground terminal pin to ground and the fused ignition switch output (run-start)
terminal pin to 12 volts. The inside mirror can now be tested by completely blocking the ambient photocell
(forward-facing) light sensor and shining a light into the headlight photocell (rearward-facing) light sensor.

For an outside mirror, there are two pigtail wire circuits (auto day/night mirror plus and auto day/night mirror
minus) that are normally controlled by the outputs from the inside mirror circuitry. Applying 1.2 volts to these
two circuits should cause the outside mirror glass to darken. If the mirror glass does not darken, the entire
mirror glass and case assembly can be replaced just as it is when the glass has been broken. Refer to
Body/Exterior/MIRROR, Outside Rearview - Removal .

MIRROR, OUTSIDE REARVIEW

DESCRIPTION

CAUTION: In the following test, 1.2 volts is applied to the outside mirror dimming

circuits. DO NOT apply 12 volts to these circuits or the mirror dimming
circuitry will be damaged and require replacement.

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Fig. 5: Power Operated Outside Rear View Mirrors
Courtesy of CHRYSLER LLC

The power operated outside rear view mirrors (1) allow the driver to adjust both mirrors electrically from the
driver seat position by operating switches integral to the power switch module on the driver side front door trim
panel. The power outside mirrors operate on non-switched battery current received through a fuse in the Totally
Integrated Power Module (TIPM) so that the mirrors remain operational, regardless of the ignition switch
position.

Each power mirror housing contains two electric motors, two drive mechanisms, the mirror glass case and the
mirror glass (2). One motor and drive controls mirror up-and-down (vertical) movement, and the other controls
right-and-left (horizontal) movement. Vehicles manufactured for certain export markets also have a power
folding mirror option. These mirrors include a third motor and drive mechanism that allow the mirror to be
folded inward and outward from the driver seat position for additional clearance through narrow passages or in
tight parking spaces.

A memory system that automatically positions the driver power mirror for two different drivers is an available
option. With the memory system, the driver side mirror head also contains two position potentiometers. One
position potentiometer monitors the vertical mirror motor, and the other monitors the horizontal mirror motor.
Refer to Electrical/Power Seats - Description .

The standard equipment mechanically folding or the optional power folding, power operated outside rear view
mirrors are also electrically heated. The mirror heater only operates when the ignition switch is in the ON
position and the rear window defogger switch is turned ON. When the rear window defogger switch is in the
ON position, electric heater grids on the rear window glass and behind both outside rear view mirror glasses are
energized. These electric heater grids produce heat to help clear the rear window glass and outside rear view
mirrors of ice, snow, or fog. Refer to Electrical/Heated Mirrors - Description .

On vehicles equipped with the optional automatic dimming inside rear view mirror, an optional driver side
automatic dimming outside rear view mirror that darkens the mirror to reduce the glare of bright lights
approaching the vehicle from behind is available. This mirror is controlled an output of the automatic dimming
inside rear view mirror. Like the automatic dimming inside rear view mirror, a thin layer of electrochromic
material between two pieces of conductive glass make up the face of the mirror glass. See Electrical/Power
Mirrors/MIRROR, Automatic Day and Night - Description.

An optional integrated turn signal mirror is also available that includes a Light Emitting Diode (LED) turn
signal module integrated into the lower forward facing surface of each outside rear view mirror. Refer to
Electrical/Lamps/Lighting - Exterior - Description .

On vehicles equipped with the optional Blind Spot Monitor (BSM) system, a Light Emitting Diode (LED)
display unit is concealed behind the outside rear view mirror glass. This unit illuminates an amber triangle icon
through the lower edge of the mirror glass to give the vehicle operator an indication that an object has been
detected by the BSM system. Refer to Electrical/Chime/Buzzer - Description .

The power outside rear view mirror unit cannot be repaired. Only the LED turn signal modules and the mirror
glass and glass case are serviced separately. If any other component of the power mirror unit is ineffective or
damaged, the entire power mirror unit must be replaced.

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OPERATION

The power operated outside rear view mirrors are connected to battery current at all times. Each mirror head
contains two electric motors, two drive mechanisms, an electric heating element and the mirror glass. If the
vehicle is equipped with the high current door power switch module configuration, hard wired ground and
battery current outputs to each power mirror motor determine whether the horizontal or the vertical motor will
be operated and the polarity of those outputs control the direction in which the motor will move the drive unit
and mirror glass.

The standard equipment power outside rear view mirrors are electrically heated. In the high current door power
switch module configuration, the heater grid behind each mirror glass is energized whenever the rear window
defogger relay is energized by the Totally Integrated Power Module (TIPM) in response to electronic defogger
switch status messages received over the CAN data bus from the A/C-heater control. In the low current door
power switch configuration each front door control module responds to the electronic defogger switch status
messages received over the CAN data bus from the A/C-heater control to control the high current output to the
heater grid of the mirror on the same door as appropriate.

On vehicles equipped with the optional driver side automatic dimming outside rear view mirror, the mirror
reflectance is controlled by the driver front door control module based upon hard wired inputs received from the
automatic dimming inside rear view mirror. On vehicles equipped with the optional signal mirrors, the turn
signal Light Emitting Diode (LED) module in each mirror is controlled by the front door control module on the
same door based upon electronic request messages received over the CAN data bus from the TIPM.

Vehicles manufactured for certain export markets are equipped with a power folding mirror option that includes
another motor and drive unit in each outside mirror and a power folding mirror switch button located between
the right and left power mirror selector buttons in the driver door power switch module. Each time the
momentary power folding mirror switch button is depressed, both outside rear view mirrors are cycled from
folded to unfolded, or from unfolded to folded. If the vehicle is equipped with the optional memory system, the
driver side mirror head also contains both a horizontal and a vertical motor position sensor. When the memory
set procedure is carried out, the memory module learns the outputs of the mirror position sensors so that those
positions can be recalled later.

If the vehicle is equipped with the optional Blind Spot Monitor (BSM) system, an LED display unit behind the
lower edge of each mirror glass illuminates an amber triangle to indicate to the vehicle operator that an object
has been detected by the BSM system. The BSM LED display is controlled by the front door control modules
based upon electronic messages received from the BSM control module over the CAN data bus.

SWITCH, MIRROR

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DESCRIPTION

Fig. 6: Driver Front Door Power Switch Module
Courtesy of CHRYSLER LLC

The power mirror system includes two selector switches (2) and an adjuster switch (3) that are located on the
driver front door trim panel and are only serviced as an integral part of the driver front door power switch
module (1). Refer to Electrical - Power Systems/Power Windows/SWITCH, Power Window - Description .

OPERATION

The power operated outside rear view mirrors are connected to battery current at all times. Each mirror head
contains two electric motors, two drive mechanisms, an electric heating element and the mirror glass. First, a
mirror selector switch button is depressed in the driver door power switch module to determine whether the
mirror adjuster switch will have control over the right or left mirror. If the vehicle is equipped with the high
current door power switch module configuration, hard wired ground and battery current outputs to each power
mirror motor determine whether the horizontal or the vertical motor will be operated and the polarity of those
outputs control the direction in which the motor will move the drive unit and mirror glass.

SWITCH, POWER FOLDAWAY MIRROR

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DESCRIPTION

Fig. 7: Driver Door Power Switch Module
Courtesy of CHRYSLER LLC

Vehicles manufactured for certain export markets where it is required are equipped with power foldaway
outside rear view mirrors. Vehicles equipped with these power foldaway mirrors have a dedicated power
folding mirror switch and switch button (2) identified by an International Standards Organization (ISO) icon.
This switch button is located between the power mirror switch selector buttons just below the power mirror
adjusting switch button. The power folding mirror switch is integral to the driver door power switch module (1)
as are the other power mirror, window and lock switches.

The power folding mirror switch cannot be repaired and, if ineffective or damaged, it must be replaced as a unit
with the driver door power switch module.

OPERATION

Each time the power folding mirror switch is depressed, both outside rear view mirrors are toggled from folded
inward to unfolded, or from unfolded to folded inward. This functionality allows the overall width of the
vehicle to be narrowed considerably from the driver's seated position and can be very helpful when navigating
very narrow passageways or where parking space is at an absolute minimum.

The power folding mirror switch is a low current switch that provides electronic switch status messages to the
front door control module on the driver side front door over a Local Interface Network (LIN) data bus. In
response to that input, the door control module provides the proper voltage and ground polarity outputs to the
folding mirror motor integral to the driver side outside rear view mirror to fold or unfold the mirror head. In
order to change the mirror direction, the door control module reverses the voltage and ground polarity outputs to
the mirror motor.

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The driver side front door control module also relays the power folding mirror switch status message to the
passenger side front door control module over the Controller Area Network (CAN) Interior High Speed (IHS)
data bus network. In response to that input, the front door control module on the passenger side front door
provides the proper voltage and ground polarity outputs to the folding mirror motor integral to the passenger
side outside rear view mirror to fold or unfold the mirror head. Each front door control module contains the
power mirror control logic for the mirror on its respective door.

The power fold away mirror system consists of the following components: mirror switch, side view mirror,
relay, wires and fuse. Refer to SYSTEM WIRING DIAGRAMS for Town & Country and/or SYSTEM
WIRING DIAGRAMS for Grand Caravan . The wiring information includes wiring diagrams, proper wire and
connector repair procedures, details of wire harness routing and retention, connector pin-out information and
location views for the various wire harness connectors, splices and grounds.

The hard wired circuits of the power folding mirror switch within the driver door power switch module may be
diagnosed using conventional diagnostic tools and procedures. Refer to SYSTEM WIRING DIAGRAMS for
Town & Country and/or SYSTEM WIRING DIAGRAMS for Grand Caravan . However, conventional
diagnostic methods will not prove conclusive in the diagnosis of the driver door power switch module or the
electronic controls or communication between modules and other devices that provide some features of the
power foldaway mirror system. The most reliable, efficient, and accurate means to diagnose the power folding
mirror switch or the electronic controls and communication related to power foldaway mirror system operation
requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.

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