DESCRIPTION
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 - 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 «MODULE, DOOR, DESCRIPTION»(ref-465939-S27549194662012042300000) .
- Front Door Power Switch Modules - Front door power switch modules are used in both primary system 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 «SWITCH, POWER WINDOW, DESCRIPTION»(ref-465953-S27792457522012042300000) .
- 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 «SWITCH, POWER WINDOW, DESCRIPTION»(ref-465953-S27792457522012042300000) .
- Power Outside Rear View Mirrors - 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 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 the appropriate wiring information. 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.
Scheme 2
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.
The power mirror switch is diagnosed using a scan tool, for the appropriate information. Refer to DIAGNOSIS AND TESTING .
Scheme 3
An automatic dimming inside rear view mirror (1) is an available option. The automatic lighted 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, 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 (2) is located on the mirror face 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.
An automatic dimming (day and night) inside rear view mirror is an available factory-installed option for this 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.
Scheme 4
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 lighted mirror switch (3), two photocell light sensors (2), the mirror connector receptacle (4) 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 MIRROR, REARVIEW, REMOVAL and MIRROR, 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.
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.
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.
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.
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 SWITCH, POWER WINDOW, REMOVAL and SWITCH, POWER WINDOW, INSTALLATION for the appropriate service information.
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. 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.
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.
See also:
• DESCRIPTION