Overview
Power mirrors allow the LH and RH exterior mirror glass to be positioned electronically. The position of the power mirror glass is controlled by the exterior mirror control switch. Selecting the LH or RH button of the exterior mirror control switch determines which power mirror glass to control.
The LH and RH exterior mirrors may be equipped with a mirror-mounted turn signal assembly. REFER to TURN SIGNAL AND HAZARD LAMPS .
The LH and RH exterior mirrors may be equipped with approach or puddle lamps, which will illuminate when the interior lights are turned on by opening a door or by pressing the unlock button on the transmitter. REFER to INTERIOR LIGHTING .
The LH and RH exterior mirrors may be equipped with either a spotter mirror in the upper outboard corner of the exterior mirror glass or BLIS® / CTA indicators. REFER to SIDE AND REAR VISION .
The LH and RH exterior mirror glass movement is controlled by the exterior mirror control switch and the LH and RH exterior mirror motors. The exterior mirrors use a jumper harness between the vehicle wire harness connector and the exterior mirror motor. The exterior mirror jumper harness is integral to the exterior mirror. Before replacing an exterior mirror or motor, inspect the jumper harness for opens, shorted circuits or damaged and pushed-out pins. If a concern with the exterior mirror jumper harness exists, attempt to repair the jumper harness.
The memory mirror function recalls the preferred positioning of the LH and RH exterior mirror glass. When a memory position is recalled by the operator, the LH and RH exterior mirror glass automatically adjusts to the preferred position stored in memory.
The LH and RH exterior mirrors may be equipped with a mirror-mounted turn signal assembly. REFER to TURN SIGNAL AND HAZARD LAMPS .
The LH and RH exterior mirrors may be equipped with approach or puddle lamps, which will illuminate when the interior lights are turned on by opening a door or by pressing the unlock button on the transmitter. REFER to INTERIOR LIGHTING .
The LH and RH exterior mirrors may be equipped with either a spotter mirror in the upper outboard corner of the exterior mirror glass or BLIS® / CTA indicators. REFER to SIDE AND REAR VISION .
Scheme 1
The exterior mirrors are available with optional heated mirror glass, which heats the mirror glass to remove frost, snow, ice and condensation. If equipped, the optional spotter mirror glass does not heat.
Scheme 2
The vehicle may be equipped with manual or power fold mirrors. When equipped with power fold mirrors, the side mirrors fold simultaneously using the exterior mirror control switch. The RH power fold mirror completes its fold slightly faster than the LH mirror due to a shorter angular fold distance. Press the button to fold the mirrors in or out. The power fold mirrors may be folded or unfolded manually. However, if a mirror is moved manually, they must be re-synchronized.
Scheme 3
The optional power folding exterior mirrors are controlled by the DSM. The power folding exterior mirror feature allows both exterior mirrors to be folded or unfolded using the exterior mirror control switch that is integral to the master window control switch. The DSM controls power folding mirror movement by reversing the polarity of voltage and ground it supplies to the power folding mirror motors. The RH and LH power folding mirrors fold or unfold at the same time and cannot be controlled independently. The mirrors operate in the opposite direction of the last switch activation.
The DSM controls power fold mirror operation but does not use memory mirror potentiometer information for operation of the power fold mirrors.
If the power folding mirrors are folded or unfolded continuously (6 to 10 cycles), the power lockout feature disables the system for approximately 3-10 minutes to prevent damage to the power folding mirror drive motors. After 3-10 minutes have elapsed, normal operation resumes. Before running a self-test or retrieving DTCs , the power fold switch must be inactive for at least 30 seconds.
The power fold mirrors may be moved inward/outward manually. If a mirror is moved manually, it needs to be re-synchronized. A mirror which has not been re-synchronized may appear to be loose. REFER to Mirror Synchronization - Exterior, Power Folding .
The interior rear view mirror has two pivot points on the support arm which allows adjustment of the mirror up or down and from side to side. The interior mirror may be equipped with the manual dimming or auto-dimming feature. The manual dimming function is completely controlled by the driver. The auto dimming mirror changes from the normal state to the non-glare state when bright lights (glare) reach the mirror. When the mirror detects bright light from behind the vehicle, it will automatically darken to minimize glare.
The manual dimming interior rear view mirror has a lever at the back of the mirror that must be pulled forward or pushed rearward by the driver to activate the manual dimming function. Manual dimming is completely controlled by the driver.
The interior auto-dimming rear view mirror automatically reduces the glare caused by headlamps reflecting in the interior rear view mirror. Voltage is supplied to the interior auto-dimming mirror when the ignition is in ACC or ON.
When the forward facing sensor detects daytime conditions, the rearward facing sensor is inactive and the mirror stays in a high reflectance mode. When the forward facing sensor detects nighttime conditions, the rearward facing sensor is active and detects glare from the headlights of vehicles approaching from the rear, or other glare producing light sources. To provide increased visibility when backing up, the interior rear view mirror automatically returns to a high reflectance mode whenever the vehicle is in REVERSE.
The auto-dimming rear view mirror has 2 photoelectric sensors, forward facing and rearward facing, that detect forward and rearward light conditions. Based on inputs from these sensors, the automatic dimming feature adjusts the reflectance level of the interior rear view mirror glass to eliminate unwanted glare. The reflectance level of the mirror glass is variable and depends on the amount of rear glare in relation to ambient light conditions in front of the interior mirror.
Normal Operation and Fault Conditions
The accessory delay relay is located inside the BCM and supplies voltage to the master window control switch when the BCM energizes the relay by grounding the relay coil. The exterior mirror control switch is integral to the master window control switch and receives power whenever the master window control switch is powered by the accessory delay relay. REFER to DELAYED ACCESSORY POWER . The exterior mirror control switch has only one ground circuit. The exterior mirrors share a common circuit for both up/down and right/left movement.
Each exterior mirror motor has specific circuits that control the down/up and left/right movement of the glass. The motors share a common return circuit.
Scheme 4
Scheme 5
Scheme 6
- CHECK THE EXTERIOR MIRROR NOTE: The following step uses a test light to simulate normal circuit loads. Use only the test light recommended in the Special Tools table at the beginning of this information. To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector. Refer to «Special Tool(s)»(ref-517613-S26115124192013012300000) . Ignition OFF. Disconnect: Inoperative RH Exterior Mirror or LH Exterior Mirror. Ignition ON. Select the inoperative mirror on the exterior mirror control switch. For inoperative LH mirror, while holding the exterior mirror control switch in the up position, monitor: LH Exterior Mirror LH Exterior Mirror C516 C516 Pin Circuit Measurement / Action Pin Circuit 2 CPM28 (BU/BN) Test Light 1 CPM29 (GN) For inoperative RH mirror, while holding the exterior mirror control switch in the up position, monitor: RH Exterior Mirror RH Exterior Mirror C601 C601 Pin Circuit Measurement / Action Pin Circuit 2 CPM28 (BU/BN) Test Light 1 CPM34 (WH/BN) Did the test light illuminate? Yes: CHECK the inoperative exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-517613-S13969929342012121200000) . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to «Exterior Mirror Motor»(ref-517613-S31855867162012121200000) . No: For vehicles with base mirrors, GO to 2 . For vehicles with heated mirrors, GO to 3 .
- CHECK THE BASE EXTERIOR MIRROR COMMON CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Exterior Mirror Control Switch C535A. For inoperative LH mirror, measure: LH Exterior Mirror Exterior Mirror Control Switch C516 C535A Pin Circuit Measurement / Action Pin Circuit 2 CPM28 (BU/BN) 4 CPM28 (BU/BN) For inoperative RH mirror, measure: RH Exterior Mirror Exterior Mirror Control Switch C601 C535A Pin Circuit Measurement / Action Pin Circuit 2 CPM28 (BU/BN) 4 CPM28 (BU/BN) Is the resistance less than 3 ohms? Yes: INSTALL a new exterior mirror control switch (integral to the master window control switch). REFER to «WINDOW CONTROL SWITCH»(ref-517617-S36404010492012121200000) . No: REPAIR the circuit.
- CHECK THE HEATED EXTERIOR MIRROR COMMON CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Exterior Mirror Control Switch. Measure: LH Exterior Mirror Exterior Mirror Control Switch C516 C504 Pin Circuit Measurement / Action Pin Circuit 2 CPM28 (BU/BN) 4 CPM28 (BU/BN) RH Exterior Mirror Exterior Mirror Control Switch C601 C504 Pin Circuit Measurement / Action Pin Circuit 2 CPM28 (BU/BN) 4 CPM28 (BU/BN) Is the resistance less than 3 ohms? Yes: INSTALL a new exterior mirror control switch (integral to the master window control switch). REFER to «WINDOW CONTROL SWITCH»(ref-517617-S36404010492012121200000) . No: REPAIR the circuit.
REFER to Rear View Mirrors - Exterior, Power .
The accessory delay relay is located inside the BCM and supplies voltage to the master window control switch when the BCM energizes the relay by grounding the relay coil. The exterior mirror control switch is integral to the master window control switch and recieves power whenever the master window control switch is powered by the accessory delay relay. REFER to DELAYED ACCESSORY POWER . The exterior mirror control switch sends input signals to the DSM upon driver request for mirror operation.
REFER to Rear View Mirrors - Exterior, Memory .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1667 | Mirror Driver Up/Down Motor Stalled | During self-test, the DSM attempts to operate the exterior mirror motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DSM disables the output, which operates the motor after 250 milliseconds and the DTC is set. The DSM will retry motor operation on the next activation of the exterior mirror control switch. |
| B1669 | Mirror Passenger Up/Down Motor Stalled | |
| B1668 | Mirror Driver Right/Left Motor Stalled | During self-test, the DSM attempts to operate the exterior mirror motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DSM disables the output, which operates the motor after 250 milliseconds and the DTC is set. The DSM will retry motor operation on the next activation of the exterior mirror control switch. |
| B1670 | Mirror Passenger Right/Left Motor Stalled | |
| B1733 | Mirror Driver Vertical Switch Circuit Failure | During self-test, if a short to ground or short to battery fault is sensed on the switch circuit, the DTC is set. During normal operation, if a fault is sensed on the circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored. |
| B1741 | Mirror Passenger Vertical Switch Circuit Failure | |
| B1737 | Mirror Driver Horizontal Switch Circuit Failure | During self-test, if a short to ground or short to battery fault is sensed on the switch circuit, the DTC is set. During normal operation, if a fault is sensed on the circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored. |
| B1745 | Mirror Passenger Horizontal Switch Circuit Failure | |
| B2223 | Mirror Driver Drive Circuit Failure | These DTCs set when the DSM detects a short to ground or battery on either a driver or passenger motor drive circuit. |
| B2224 | Mirror Passenger Drive Circuit Failure | |
| B2312 | Mirror Passenger Horizontal Feedback Potentiometer Circuit Failure | These DTCs set when the DSM detects an open or short to ground on either a driver or passenger mirror horizontal position feedback circuit. When the DTC is set, the DSM operates the motor for 1 second then movement stops. |
| B2320 | Mirror Driver Horizontal Feedback Potentiometer Circuit Failure | |
| B2314 | Mirror Passenger Horizontal Feedback Potentiometer Circuit Short to Battery | These DTCs set when the DSM detects a short to battery on either a driver or passenger mirror horizontal position feedback circuit. When DTC is set, the DSM operates the motor for 1 second then movement stops. |
| B2322 | Mirror Driver Horizontal Feedback Potentiometer Circuit Short to Battery | |
| B2316 | Mirror Passenger Vertical Feedback Potentiometer Circuit Failure | These DTCs set when the DSM detects an open or short to ground on either a driver or passenger mirror vertical position feedback circuit. When DTC is set, the DSM operates the motor for 1 second then movement stops. |
| B2324 | Mirror Driver Vertical Feedback Potentiometer Circuit Failure | |
| B2318 | Mirror Passenger Vertical Feedback Potentiometer Circuit Short to Battery | These DTCs set when the DSM detects a short to battery on either a driver or passenger mirror vertical position feedback circuit. When DTC is set, the DSM operates the motor for 1 second then movement stops. |
| B2326 | Mirror Driver Vertical Feedback Potentiometer Circuit Short to Battery |
DTC FAULT TRIGGER CONDITIONS
When rear window defrost is activated, (button is on FCIM, touchscreen or voice command) the HVAC module provides ground to the rear window defrost relay coil causing the contacts in the relay to close. Voltage is supplied to the heated mirror glass to heat the mirrors. The exterior rear view heated mirrors do not share a common ground.
Note. The power folding mirrors must be synchronized anytime the RH, LH or both mirrors are folded or unfolded without using the power folding mirror control switch, or if a new power folding mirror has been installed.
Note. If the power folding mirrors are folded or unfolded continuously (6 to 10 cycles), the power lockout feature disables the system for approximately 3-10 minutes to prevent damage to the power fold motors. If this occurs, wait approximately 3 minutes with the vehicle running and up to 10 minutes with the vehicle off for the system to reset and mirror function to return to normal.
REFER to Rear View Mirrors - Exterior, Power Folding .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B112B | Mirror Power Fold Switch Input Short to Battery | During self-test, if a short to battery is sensed on the switch circuit, the DTC is set. During normal operation, if a fault is sensed on the circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored. |
DTC FAULT TRIGGER CONDITIONS
REFER to Rear View Mirrors - Interior .