Mirror System Buick Enclave I

Fastener Tightening Specifications

Fastener Tightening Specifications

Scheme 1

Scheme 2

Scheme 3

Scheme 4

Scheme 5

Diagnostic Code Index

DIAGNOSTIC CODE INDEX

Diagnostic Instructions

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information

Circuit/System Description

The Driver Door Switch (DDS) or Passenger Door Switch (PDS) controls the mirror horizontal and vertical motors through the use of bi-directional motor controls. When the mirror is commanded up and down, voltage or ground is supplied to the mirror vertical motor through the mirror motor up/down control circuit and voltage or ground is supplied through the mirror motor common circuit.

Horizontal controls operate in the same manner with the mirror motor left/right control circuit supplying voltage or ground and the mirror motor common circuit suppling voltage or ground to the mirror horizontal motor when the mirror is commanded right and left.

Conditions for Running the DTC

The power mirror is being commanded left, right, up, or down.

Conditions for Setting the DTC

B1544

An improper voltage level is detected on the mirror motor common control circuit.

B1600

An improper voltage level is detected on the mirror motor up/down control circuit.

B1605

An improper voltage level is detected on the mirror motor left/right control circuit.

Action Taken When the DTC Sets

Operation of the affected motor is suspended as long as the fault is present.

Conditions for Clearing the DTC

1. A current DTC will clear when the fault is no longer present.
2. A history DTC will clear after 40 malfunction-free ignition cycles.

Reference Information

Schematic Reference

Outside Rearview Mirror Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Outside Mirror Description and Operation (Power Mirrors) , Outside Mirror Description and Operation (Heated Mirrors)

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Command the left and right outside mirror to move up, down, left and right using the mirror directional switch. The mirror should move in the commanded direction.

Circuit/System Testing

1. Ignition OFF, disconnect the X1 (RPO DS3) or X2 (RPO W49) harness connector at the outside rearview mirror.
2. Connect a test lamp between the control circuit terminal 2 and the control circuit terminal 6.
3. Ignition ON, commanded the mirror left and right using the mirror directional switch. The test lamp should turn ON and OFF as the mirror commanded to the left and right. If the test lamp is always ON, test the control circuits for a short to voltage. If the circuit tests normal, replace the appropriate door switch. If the test lamp is always OFF, test the control circuits for a short to ground or an open/high resistance. If the circuit tests normal, replace the appropriate door switch.
4. Ignition OFF, install a test lamp between the control circuit terminal 1 and the control circuit terminal 6.
5. Ignition ON, commanded the mirror up and down using the mirror directional switch. The test lamp should turn ON and OFF as the mirror commanded up and down. If the test lamp is always ON, test the control circuits for a short to voltage. If the circuit tests normal, replace the appropriate door switch. If the test lamp is always OFF, test the control circuits for a short to ground or an open/high resistance. If the circuit tests normal, replace the appropriate door switch.
6. If all circuits test normal, test or replace the outside rearview mirror motor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Outside Rearview Mirror Motor Replacement»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Control Module References»(/buick/enclave/i-2007-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for DDS or PDS replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The driver door switch (DDS) and passenger door switch (PDS) determine the position of the outside rearview mirrors based on inputs from two mirror position sensors, one for vertical position, the other for horizontal position. 5 V is applied to each sensor through a shared 5 V reference circuit and a shared low reference circuit supplies ground. Each sensor has an individual signal circuit which provides position voltage to the DDS/PDS.

Battery voltage must be between 9-16 V.

B1580

An improper voltage level is seen on the horizontal position sensor signal circuit.

B1590

An improper voltage level is seen the vertical position sensor signal circuit.

Memory recall functions are suspended as long as the fault is present.

1. A current DTC will clear when the fault is no longer present.
2. A history DTC will clear after 40 malfunction-free ignition cycles.

Schematic Reference

Outside Rearview Mirror Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Outside Mirror Description and Operation (Power Mirrors) , Outside Mirror Description and Operation (Heated Mirrors)

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, observe the scan tool Mirror Horizontal Position and Mirror Vertical Position parameters. The reading should be between 0.2-4.8 V and change as the mirror is moved, left, right, up, and down.

1. Ignition OFF, disconnect the harness connector X1 at the appropriate outside rearview mirror.
2. Ignition OFF, wait 1 minute, test for less than 30 ohms between the low reference circuit terminal 10 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the appropriate door switch.
3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 7 and ground while depressing the mirror directional switch up or down. If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the door switch. If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
4. Install a 3 A fused jumper wire between the signal circuit terminal 4 and the 5 V reference circuit terminal 7. Verify the scan tool Mirror Vertical Position parameter is greater than 4.8 V while depressing the mirror directional switch up or down. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
5. Install a 3 A fused jumper wire between the signal circuit terminal 5 and the 5 V reference circuit terminal 7. Verify the scan tool Mirror Horizontal Position parameter is greater than 4.8 V while depressing the mirror directional switch up or down. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
6. Install a 3 A fused jumper wire between the signal circuit terminal 4 and the low reference circuit terminal 10. Verify the scan tool Mirror Vertical Position parameter is less than 0.2 V. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the door switch.
7. Install a 3 A fused jumper wire between the signal circuit terminal 5 and the low reference circuit terminal 10. Verify the scan tool Mirror Horizontal Position parameter is less than 0.2 V. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the door switch.
8. If all circuits test normal, test or replace the appropriate outside rearview mirror motor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Outside Rearview Mirror Motor Replacement»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Control Module References»(/buick/enclave/i-2007-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for DDS or PDS replacement, programming and setup

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The Driver Door Switch (DDS) and Passenger Door Switch (PDS) supply voltage to the outside rearview mirror heater elements upon receipt of a serial data message from the HVAC module indicating that the rear defrost system is active. The door switch supplies B+ through the mirror heating element control circuit when a request is seen. Ground is applied through the mirror heating low reference circuit.

Battery voltage must be between 9-16 volts.

B1640 01

A short to voltage is detected on the mirror heating element supply voltage circuit.

B1640 02

A short to ground is detected on the mirror heating element supply voltage circuit when attempting to activate the heated mirror.

The affected heated mirror will not be activated.

1. A current DTC will clear when the fault is no longer present
2. A history DTC will clear after 40 malfunction free ignition cycles

Schematic Reference

Outside Rearview Mirror Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Outside Mirror Description and Operation (Power Mirrors) , Outside Mirror Description and Operation (Heated Mirrors)

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, press the rear window defogger switch. The rear window defogger and both heated mirrors should become warm.

1. If the rear window defogger is inoperative, refer to «Rear Window Defogger Malfunction»(/buick/enclave/i-2007-2013/remont/heated-glassdefoggers/#fixed-and-moveable-windows) .

1. Ignition OFF, disconnect the harness connector X1 (RPO W49) or X2 (RPO DNP) at the outside rearview mirror.
2. Wait 1 minute, test for less than 1.0 ohm between the ground circuit terminal 3 and ground. If greater than the specified range, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the appropriate door switch.
3. Connect a test lamp between the control circuit terminal 7 and ground.
4. Ignition ON, command the mirror heater ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the door switch. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
5. If all circuits test normal, test or replace the outside rearview mirror glass.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Outside Rearview Mirror Glass Replacement»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Control Module References»(/buick/enclave/i-2007-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for DDS or PDS replacement, setup and programming

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The driver door module (DDM) and passenger door module (PDM) control the power folding or power extending functions of the outside rearview mirrors. The folding mirror motors are controlled by using bi-directional motor controls through the folding mirror motor retract control circuit and the folding mirror motor extend control circuit.

Battery voltage must be between 9-16 volts.

An improper voltage level is seen on either the folding mirror motor retract control circuit or the folding mirror motor extend control circuit.

Power folding mirror operations are suspended as long as the fault is present.

1. A current DTC will clear when the fault is no longer present.
2. A history DTC will clear after 40 fault-free ignition cycles.

Schematic Reference

Outside Rearview Mirror Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Outside Mirror Description and Operation (Power Mirrors) , Outside Mirror Description and Operation (Heated Mirrors)

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool References

Control Module References for scan tool information

Ignition ON, using the folding mirror switch, the left and right rearview mirrors should extend and retract as commanded.

1. Ignition OFF, disconnect the X1 harness connector at the appropriate outside rearview mirror.
2. Connect a test lamp between control circuit terminal 1 and control circuit terminal 2.
3. Command the Mirror Fold to Retract and Extend with a scan tool. The test lamp should turn ON when commanding the retract and extend states. If the test lamp remains OFF during either of the commands, test for a short to voltage, short to ground, or an open/high resistance on either control circuit. If the circuits test normal, replace the door module.
4. If all circuits test normal, test or replace the outside rearview mirror.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Power Mirror Replacement»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Control Module References»(/buick/enclave/i-2007-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for DDM or PDM replacement, setup, and programming

Symptoms - Mirrors

Note. The following steps must be completed before using the symptom tables.

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) before using the Symptom Tables in order to verify that all of the following are true: There are no DTCs set. The control modules can communicate via the serial data link.
2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following system descriptions: «Automatic Day-Night Mirror Description and Operation»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) «OnStar Description and Operation»(/buick/enclave/i-2007-2013/remont/entertainment-systems/#cellular-system-entertainment-system-and-navigation-system__onstar-description-and-operation) «Outside Mirror Description and Operation (Power Mirrors)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) , «Outside Mirror Description and Operation (Heated Mirrors)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the system. Refer to «Checking Aftermarket Accessories»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__checking-aftermarket-accessories) .
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Automatic Day-Night Mirrors Malfunction (with DNP or DNT)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) , «Automatic Day-Night Mirrors Malfunction (without DNP or DNT)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Heated Mirrors Malfunction (with DS3 and W49)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) , «Heated Mirrors Malfunction (with DNP or DNT)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) , «Heated Mirrors Malfunction (with DS3, except W49)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
3. «OnStar Button LED Malfunction»(/buick/enclave/i-2007-2013/remont/entertainment-systems/#cellular-system-entertainment-system-and-navigation-system)
4. «OnStar Button Malfunction»(/buick/enclave/i-2007-2013/remont/entertainment-systems/#cellular-system-entertainment-system-and-navigation-system)
5. «Power Mirror Folding Malfunction (If Equipped)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
6. «Power Mirror Malfunction (with DS3 and W49)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) , «Power Mirror Malfunction (with DL6 or DS3, except W49)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) , «Power Mirror Malfunction (with DNP or DNT)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
7. «Power Mirror Tilt Inoperative in Reverse»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The driver door switch (DDS) and passenger door switch (PDS) supply voltage to the outside rearview mirror heater elements upon receipt of a serial data message from the HVAC control module indicating that the rear defrost system is active. The door module supplies B+ through the driver/passenger mirror heating element control circuit when a request is seen. Ground is applied through the driver/passenger mirror heating element ground circuit.

Schematic Reference

Outside Rearview Mirror Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Outside Mirror Description and Operation (Power Mirrors) , Outside Mirror Description and Operation (Heated Mirrors)

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, press the rear window defogger switch. Verify the rear window defogger indicator illuminates. If the rear window defogger indicator does not illuminate, refer to «Rear Window Defogger Malfunction»(/buick/enclave/i-2007-2013/remont/heated-glassdefoggers/#fixed-and-moveable-windows) .
2. Press the rear window defogger switch. Verify both the left and right outside mirror glass become warm.

1. Ignition OFF, disconnect the harness connector at the outside rearview mirror.
2. Wait 1 minute, test for less than 10ohms between the ground circuit terminal 3 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the appropriate door switch.
3. Connect a test lamp between the control circuit terminal 7 and ground.
4. Ignition ON, command the mirror heater ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the door switch. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
5. If all circuits test normal, test or replace the outside rearview mirror glass.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Outside Rearview Mirror Glass Replacement»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Control Module References»(/buick/enclave/i-2007-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for DDS or PDS replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category

The RR DEFOG relay supplies voltage to the outside rearview mirror heater elements based on the current state of the rear window defogger. The relay supplies B+ through the driver/passenger mirror heating element control circuit when a request is seen.

Schematic Reference

Outside Rearview Mirror Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Outside Mirror Description and Operation (Power Mirrors) , Outside Mirror Description and Operation (Heated Mirrors)

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, press the rear window defogger switch. Verify the rear window defogger turns ON and the rear window becomes warm. If the rear window defogger does not turn on, refer to «Rear Window Defogger Malfunction»(/buick/enclave/i-2007-2013/remont/heated-glassdefoggers/#fixed-and-moveable-windows) .
2. Press the rear window defogger switch. Verify both the left and right outside mirror glass become warm.

1. Ignition OFF, disconnect the harness connector at the outside rearview mirror.
2. Ignition OFF, test for less than 5 ohms between the ground circuit terminal 3 and ground. If greater than the specified range, test the ground circuit for an open/high resistance.
3. Connect a test lamp between the control circuit terminal 7 and ground.
4. Ignition ON, command the rear window defogger ON and OFF with the rear defogger switch. The test lamp should turn ON and OFF when changing between the commanded states. If the test lamp is always ON, test the B+ circuit for a short to voltage. If the test lamp is always OFF, test the B+ circuit for a short to ground or an open/high resistance.
5. If all circuits test normal, test or replace the outside rearview mirror glass.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Outside Rearview Mirror Glass Replacement»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Control Module References»(/buick/enclave/i-2007-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for DDS or PDS replacement, setup and programming

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The driver door switch (DDS) and passenger door switch (PDS) supply voltage to the outside rearview mirror heater elements upon receipt of a serial data message from the HVAC control module indicating that the rear defrost system is active. The door module supplies B+ through the driver/passenger mirror heating element control circuit when a request is seen. Ground is applied through the driver/passenger mirror heating element ground circuit.

Schematic Reference

Outside Rearview Mirror Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Outside Mirror Description and Operation (Power Mirrors) , Outside Mirror Description and Operation (Heated Mirrors)

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, press the rear window defogger switch. Verify the rear window defogger indicator illuminates. If the rear window defogger indicator does not illuminate, refer to «Rear Window Defogger Malfunction»(/buick/enclave/i-2007-2013/remont/heated-glassdefoggers/#fixed-and-moveable-windows) .
2. Press the rear window defogger switch. Verify both the left and right outside mirror glass become warm.

1. Ignition OFF, disconnect the harness connector at the outside rearview mirror.
2. Wait 1 minute, test for less than 10ohms between the ground circuit terminal 3 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the appropriate door switch.
3. Connect a test lamp between the control circuit terminal 7 and ground.
4. Ignition ON, command the mirror heater ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the DDS. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the PDS.
5. If all circuits test normal, test or replace the outside rearview mirror glass.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Outside Rearview Mirror Glass Replacement»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Control Module References»(/buick/enclave/i-2007-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for DDS or PDS replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category

The inside rearview mirror uses 2 photocell sensors. One sensor is the rear light sensor, located on the face side of the mirror, facing the rear of the vehicle. The rear light sensor is used to determine light conditions present at the mirror face. The other sensor is the front light sensor, located on the backside of the mirror, facing the front of the vehicle. The front light sensor is used to determine the exterior light conditions at the front of the vehicle. With a low exterior light condition detected by the front light sensor and a high light condition from the rear light sensor, the inside rearview mirror will automatically darken the face of the inside rearview mirror and the left outside rearview mirror. The inside rearview mirror provides a signal circuit and a low reference circuit to the left mirror face to darken the mirror when needed.

With the gear selector lever in the REVERSE position, backup lamp supply voltage is supplied as an input to the inside rearview mirror. The mirror monitors this input to disable the automatic day-night feature. This allows the driver to see objects in the mirror clearly when backing up, regardless of the rear light sensor status.

Schematic Reference

1. «Inside Rearview Mirror Schematics»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Outside Rearview Mirror Schematics»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Automatic Day-Night Mirror Description and Operation

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, vehicle in PARK, cover the front light sensor with a towel or other suitable item. Shine a flashlight at the rear light sensor while observing the inside rearview mirror face. The inside rearview mirror face should dim. If the mirror face does not dim, test or replace the inside rearview mirror.
2. Place the transmission in REVERSE. The inside rearview mirror face should transition from dim to bright. If the mirror does not transition from dim to bright, refer to Inside Review Mirror Dimming Malfunction.
3. Vehicle in PARK, the left outside rearview mirror face should dim. If the left outside rearview mirror face does not dim, refer to Outside Rearview Mirror Dimming Malfunction.
4. Place the transmission in REVERSE. The outside rearview mirror face should transition from dim to bright. If the mirror does not transition between the bright and dim states, refer to Outside Review Mirror Dimming Malfunction.

Inside Review Mirror Dimming Malfunction

1. Ignition OFF, disconnect the harness connector at the inside rearview mirror.
2. Verify that a test lamp illuminates between B+ and the ground circuit terminal 8. If the test lamp does not illuminate, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 13 and ground. If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
4. Park brake applied, vehicle in REVERSE, verify that a test lamp illuminates between the backup lamp control circuit terminal 9 and ground. If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, refer to «Backup Lamps Malfunction»(/buick/enclave/i-2007-2013/remont/exterior-lights/#lighting-system) .
5. If all circuits test normal, test or replace the inside rearview mirror.

Outside Rearview Mirror Dimming Malfunction

1. Ignition OFF, disconnect the X2 harness connector at the driver outside rearview mirror.
2. Verify that a test lamp illuminates between B+ and the ground circuit terminal 4. If the test lamp does not illuminate, test the ground circuit for an open/high resistance. If the circuit tests normal, test or replace the inside rearview mirror.
3. Ignition ON, test for less than 1 volt between the control circuit terminal 9 and ground. If greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, test or replace the inside rearview mirror.
4. Headlamps ON, vehicle in PARK, cover the front light sensor with a towel or other suitable item. Shine a flashlight at the rear light sensor. Test for greater than 1 volt between the control circuit terminal 9 and ground. If less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the inside rearview mirror.
5. If all circuits test normal, test or replace the driver outside rearview mirror face.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Inside Rearview Mirror Replacement»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Outside Rearview Mirror Glass Replacement»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category

The inside rearview mirror uses 2 photocell sensors. One sensor is the rear light sensor, located on the face side of the mirror, facing the rear of the vehicle. The rear light sensor is used to determine light conditions present at the mirror face. The other sensor is the front light sensor, located on the backside of the mirror, facing the front of the vehicle. The front light sensor is used to determine the exterior light conditions at the front of the vehicle. With a low exterior light condition detected by the front light sensor and a high light condition from the rear light sensor, the inside rearview mirror will automatically darken the face of the inside rearview mirror.

With the gear selector lever in the REVERSE position, backup lamp supply voltage is supplied as an input to the inside rearview mirror. The mirror monitors this input to disable the automatic day-night feature. This allows the driver to see objects in the mirror clearly when backing up, regardless of the rear light sensor status.

Schematic Reference

Inside Rearview Mirror Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Automatic Day-Night Mirror Description and Operation

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, vehicle in PARK, cover the front light sensor with a towel or other suitable item. Shine a flashlight at the rear light sensor while observing the inside rearview mirror face. The inside rearview mirror face should dim.
2. Place the transmission in REVERSE. The inside rearview mirror face should transition from dim to bright.

1. Ignition OFF, disconnect the harness connector at the inside rearview mirror.
2. Verify that a test lamp illuminates between B+ and the ground circuit terminal 8. If the test lamp does not illuminate, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 13 and ground. If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
4. Park brake applied, vehicle in REVERSE, verify that a test lamp illuminates between the backup lamp control circuit terminal 9 and ground. If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, refer to «Backup Lamps Malfunction»(/buick/enclave/i-2007-2013/remont/exterior-lights/#lighting-system) .
5. If all circuits test normal, test or replace the inside rearview mirror.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Inside Rearview Mirror Replacement

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The driver door switch (DDS) and passenger door switch (PDS) control the power folding or power extending functions of the outside rearview mirrors. The folding mirror motors are controlled by using bi-directional motor controls through the folding mirror motor retract control circuit and the folding mirror motor extend control circuit.

Schematic Reference

Outside Rearview Mirror Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Outside Mirror Description and Operation (Power Mirrors) , Outside Mirror Description and Operation (Heated Mirrors)

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, observe the scan tool DDS Mirror Fold Switch parameter while cycling the mirror fold switch between the extend and retract positions. The parameter should change between Idle, Extend, and Retract. If the parameter does not cycle between the specified values, replace the DDS.
2. Command the power folding mirrors to extend and retract using the mirror fold switch. Both mirrors should extend and retract as commanded.

1. Ignition OFF, disconnect the X1 harness connector at the outside rearview mirror.
2. Connect a test lamp between the control circuit terminal 1 and the control circuit terminal 2.
3. Command the mirrors to extend and retract using the power folding switch. The test lamp turn ON and OFF when changing between the commanded states. If the test lamp is always ON, test both control circuits for a short to voltage. If the circuit tests normal, replace the appropriate door switch. If the test lamp is always OFF, test both control circuits for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
4. If all circuits test normal, test or replace the outside rearview mirror.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Power Mirror Replacement»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Control Module References»(/buick/enclave/i-2007-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for DDS or PDS replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The driver door switch (DDS) or passenger door switch (PDS) controls the mirror horizontal and vertical motors through the use of bi-directional motor controls. When the mirror is commanded up and down, voltage or ground is supplied to the mirror vertical motor through the mirror motor up/down control circuit and voltage or ground is supplied through the mirror motor common circuit.

Horizontal controls operate in the same manner with the mirror motor left/right control circuit supplying voltage or ground and the mirror motor common circuit suppling voltage or ground to the mirror horizontal motor when the mirror is commanded right and left.

The Driver Door Switch (DDS) and Passenger Door Switch (PDS) determine the position of the outside rearview mirrors based on inputs from two mirror position sensors, one for vertical position, the other for horizontal position. 5 V is applied to each sensor through a shared 5 V reference circuit and a shared low reference circuit supplies ground. Each sensor has an individual signal circuit which provides position voltage to the DDS/PDS.

Schematic Reference

Outside Rearview Mirror Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Outside Mirror Description and Operation (Power Mirrors) , Outside Mirror Description and Operation (Heated Mirrors)

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, observe the scan tool Mirror Select Switch parameter while cycling the mirror select switch between the left and right positions. The parameter should change between Idle, Right, and Left. If the parameter does not cycle between the specified values, replace the DDS.
2. Observe the scan tool Mirror Motor parameter while cycling the mirror directional switch between the up, down, left and right positions. The parameter should change between Idle, Up, Down, Left, and Right. If the parameter does not cycle between the specified values, replace the DDS.
3. Using the mirror directional switch operate the left and right outside mirrors to move up, down, left and right. The mirrors should move in the commanded directions. If a mirror does not move in all the commanded directions refer to, Mirror Motor Circuit Test.
4. Operate the memory 1 and 2 recall switches. The outside rearview mirrors should adjust to the stored memory settings. If a mirror does not adjust to the stored memory setting refer to, Mirror Position Sensor Circuit Test.

Mirror Position Sensor Circuit Test

1. Ignition OFF, disconnect the harness connector X1 at the appropriate outside rearview mirror.
2. Wait 1 minute, test for less than 30 ohms between the low reference circuit terminal 10 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the appropriate door switch.
3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 7 and ground while depressing the mirror directional switch up or down. If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the door switch. If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
4. Install a 3 A fused jumper wire between the signal circuit terminal 4 and the 5 V reference circuit terminal 7. Verify the scan tool Mirror Vertical Position parameter is greater than 4.8 V while depressing the mirror directional switch up or down. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
5. Install a 3 A fused jumper wire between the signal circuit terminal 5 and the 5 V reference circuit terminal 7. Verify the scan tool Mirror Horizontal Position parameter is greater than 4.8 V while depressing the mirror directional switch up or down. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
6. Install a 3 A fused jumper wire between the signal circuit terminal 4 and the low reference circuit terminal 10. Verify the scan tool Mirror Vertical Position parameter is less than 0.2 V. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the door switch.
7. Install a 3 A fused jumper wire between the signal circuit terminal 5 and the low reference circuit terminal 10. Verify the scan tool Mirror Horizontal Position parameter is less than 0.2 V. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the door switch.
8. If all circuits test normal, test or replace the appropriate outside rearview mirror motor.

Mirror Motor Circuit Test

1. Ignition OFF, disconnect the X1 (RPO DS3) or X2 (RPO W49) harness connector at the outside rearview mirror.
2. Connect a test lamp between the control circuit terminal 2 and the control circuit terminal 6.
3. Command the mirror left and right using the mirror directional switch. The test lamp should turn ON and OFF as the mirror commanded to the left and right. If the test lamp is always ON, test the control circuits for a short to voltage. If the circuit tests normal, replace the appropriate door switch. If the test lamp is always OFF, test the control circuits for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
4. Install a test lamp between the control circuit terminal 1 and the control circuit terminal 6.
5. Command the mirror up and down using the mirror directional switch. The test lamp should turn ON and OFF as the mirror commanded up and down. If the test lamp is always ON, test the control circuits for a short to voltage. If the circuit tests normal, replace the door switch. If the test lamp is always OFF, test the control circuits for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
6. If all circuits test normal, test or replace the outside rearview mirror motor.

Perform the Diagnostic Repair Verification after completing the repair.

1. «Outside Rearview Mirror Motor Replacement»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Control Module References»(/buick/enclave/i-2007-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for DDS or PDS replacement, programming and setup

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The Driver Door Switch (DDS) or Passenger Door Switch (PDS) controls the mirror horizontal and vertical motors through the use of bi-directional motor controls. When the mirror is commanded up and down, voltage or ground is supplied to the mirror vertical motor through the mirror motor up/down control circuit and voltage or ground is supplied through the mirror motor common circuit.

Horizontal controls operate in the same manner with the mirror motor left/right control circuit supplying voltage or ground and the mirror motor common circuit suppling voltage or ground to the mirror horizontal motor when the mirror is commanded right and left.

Schematic Reference

Outside Rearview Mirror Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Outside Mirror Description and Operation (Power Mirrors) , Outside Mirror Description and Operation (Heated Mirrors)

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, observe the scan tool Mirror Select Switch parameter while cycling the mirror select switch between the left and right positions. The parameter should change between Idle, Right, and Left. If the parameter does not cycle between the specified values, replace the DDS.
2. Observe the scan tool Mirror Motor parameter while cycling the mirror directional switch between the up, down, left and right positions. The parameter should change between Idle, Up, Down, Left, and Right. If the parameter does not cycle between the specified values, replace the DDS.
3. Command the left and right outside mirror to move up, down, left and right using the mirror directional switch. The mirror should move in the commanded direction.

1. Ignition OFF, disconnect the X1 harness connector at the outside rearview mirror.
2. Connect a test lamp between the control circuit terminal 2 and the control circuit terminal 6.
3. Command the mirror left and right using the mirror directional switch. The test lamp should turn ON and OFF as the mirror commanded to the left and right. If the test lamp is always ON, test both control circuits for a short to voltage. If the circuit tests normal, replace the appropriate door switch. If the test lamp is always OFF, test both control circuits for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
4. Connect a test lamp between the control circuit terminal 1 and the control circuit terminal 6.
5. Command the mirror up and down using the mirror directional switch. The test lamp should turn ON and OFF as the mirror commanded up and down. If the test lamp is always ON, test both control circuits for a short to voltage. If the circuit tests normal, replace the door switch. If the test lamp is always OFF, test both control circuits for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
6. If all circuits test normal, test or replace the outside rearview mirror motor.

Perform the Diagnostic Repair Verification after completing the repair.

1. «Outside Rearview Mirror Motor Replacement»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Control Module References»(/buick/enclave/i-2007-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for DDS or PDS replacement, programming and setup

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category

The outside rearview mirror switch controls the outside rearview mirrors based on the position of the mirror selector switch and which movement position is selected. The outside rearview mirror switch has four positions: up, down, left, and right. B+ is applied to the switch from the PWR/MIR fuse in the IP fuse block and when a movement position switch is selected, voltage is sent to the commanded mirror via a mirror control control. The opposite mirror control circuit acts as a ground circuit for the bi-directional mirror motor. Ground is the applied through the switch.

Schematic Reference

Outside Rearview Mirror Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Outside Mirror Description and Operation (Power Mirrors) , Outside Mirror Description and Operation (Heated Mirrors)

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, with the mirror selector switch in the DRIVER position, command the mirrors UP, DOWN, LEFT, and RIGHT using the mirror directional switch. The driver mirror should move in the commanded direction.
2. With the mirror selector switch in the PASSENGER position, command the mirrors UP, DOWN, LEFT, and RIGHT using the mirror directional switch. The passenger mirror should move in the commanded direction.

1. Ignition OFF, disconnect the harness connector at the outside rearview mirror switch.
2. Test for less than 10 ohms between the ground circuit terminal G and ground. If greater than the specified range, test the ground circuit for an open/high resistance.
3. Verify that a test lamp illuminates between the B+ circuit terminal B and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. Ignition OFF, connect the harness connector at the outside rearview mirror switch.
5. Disconnect the harness connector at the appropriate outside rearview mirror.
6. Connect a test lamp between the control circuit terminal 1 and the control circuit terminal 6.
7. Operate the vertical switch UP and DOWN. The test lamp should turn ON when commanding the UP and DOWN states. If the test lamp remains OFF during either of the commands, test for a short to voltage, short to ground, or an open/high resistance on the control circuits. If the circuits test normal, replace the power mirror switch.
8. Connect a test lamp between the control circuit terminal 2 and the control circuit terminal 6.
9. Operate the horizontal switch LEFT and RIGHT. The test lamp should turn ON when commanding the LEFT and RIGHT states. If the test lamp remains OFF during either of the commands, test for a short to voltage, short to ground, or an open/high resistance on the control circuits. If the circuits test normal, replace the power mirror switch.
10. If all circuits test normal, test or replace the outside rearview mirror motor.

Perform the Diagnostic Repair Verification after completing the repair.

1. «Outside Rearview Mirror Motor Replacement»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system)
2. «Control Module References»(/buick/enclave/i-2007-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for DDS or PDS replacement, programming and setup

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The outside mirror switch and passenger window switch are on a serial data circuit with the memory seat module as the master. The mirror select and directional control switches are inputs to the memory seat module through the serial data circuit. When the memory seat module receives switch inputs from the outside mirror switch, mirror output commands are sent to the appropriate switch through the serial data circuit. The outside mirror switch and passenger window switch control the left and right outside rear view mirrors through bi-directional motor control circuits. The motor control circuits are floating while in an inactive state and the switches will apply power and ground to the control circuits as necessary to move the mirror in the commanded direction.

Mirror position is determined by both horizontal and vertical position sensors in each of the power mirrors. The outside mirror switch and passenger window switch supply a 5 V reference, low reference, and horizontal and vertical position signal circuits to these sensors. The signal circuits are referenced from 5 V by the switches and the signal circuit voltage levels represent the mirror positions. The mirror positions are sent to the memory seat module through the serial data circuit where they are stored for memory mirror operation. When the memory seat module receives a memory recall command, the memory seat module will send the go to position commands to the outside mirror switch and passenger window switch. The switches will then drive the appropriate mirror motors to the commanded position sensor settings.

Diagnostic Aids

Not all vehicles have the Park Tilt Mirror feature, verify that the Park Tilt Mirrors option is available in the DIC Vehicle Customization Feature Setting Menu before attempting diagnosis.

Schematic Reference

Outside Rearview Mirror Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Outside Mirror Description and Operation (Power Mirrors) , Outside Mirror Description and Operation (Heated Mirrors)

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON.
2. Verify the park assist option is activated in the driver information center (DIC).
3. Select the driver outside mirror on S52 Outside Rearview Mirror Switch.
4. Verify mirror functions properly when operating the S52 Outside Rearview Mirror Switch in UP/DOWN and LEFT/RIGHT positions. If the mirror does not function properly Refer to «Power Mirror Malfunction (with DS3 and W49)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) , «Power Mirror Malfunction (with DL6 or DS3, except W49)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) , «Power Mirror Malfunction (with DNP or DNT)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) . If the mirror functions properly
5. Select the passenger outside mirror on S52 Outside Rearview Mirror Switch.
6. Verify mirror functions properly when operating the S52 Outside Rearview Mirror Switch in UP/DOWN and LEFT/RIGHT positions. . If the mirror does not function properly Refer to «Power Mirror Malfunction (with DS3 and W49)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) , «Power Mirror Malfunction (with DL6 or DS3, except W49)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) , «Power Mirror Malfunction (with DNP or DNT)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) . If the mirror functions properly
7. Operate the memory 1 and 2 recall switches on S47D Seat Memory Switch - Driver.
8. Verify the outside rearview mirrors adjust to the stored memory positions. If the mirrors do not adjust to the stored positions Refer to «Power Mirror Malfunction (with DS3 and W49)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) , «Power Mirror Malfunction (with DL6 or DS3, except W49)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) , «Power Mirror Malfunction (with DNP or DNT)»(/buick/enclave/i-2007-2013/remont/mirrors/#mirror-system) . If the mirrors adjust to the stored positions
9. Park brake on, vehicle running, shift the vehicle in REVERSE.
10. Verify that the outside rearview mirrors tilt. If the driver outside mirror does not tilt Ignition OFF. Replace the S52 Outside Rearview Mirror Switch. Park brake on, vehicle running, shift the vehicle in REVERSE. Verify the driver mirror tilts. If the mirror does not tilt, replace the K40 Memory Seat Module. If the mirror tilts All OK. If the passenger outside mirror does not tilt Ignition OFF. Replace the S79P Passenger Window Switch. Park brake on, vehicle running, shift the vehicle in REVERSE. Verify the driver mirror tilts. If the mirror does not tilt, replace the K40 Memory Seat Control Module. If the mirror tilts All OK. If the mirrors tilt
11. All OK.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for door lock/window switches and memory seat control module replacement, programming and setup

Scheme 6

Outside Remote Control Rearview Mirror Switch Replacement (Traverse without A45)

Scheme 7

Power Mirror Replacement

Scheme 8

Outside Rearview Mirror Motor Replacement

Removal Procedure

1. Place the front side door window in the full down position.
2. Apply several layers of masking tape (2) to the bottom and inner edge of the outside rearview mirror housing (3) in order to protect the painted finish.
3. Push the mirror glass (1) inward at the top outer corner until full travel is reached.
4. Remove the mirror glass do the following: Retain pressure on the top outer corner of the mirror glass (4). Insert a flat plastic suitable tool (1) between the two tabs (2) located behind the glass. Twist the flat plastic suitable tool (1) between the tabs (2) until the mirror glass releases from the motor.
5. Disconnect the electrical connectors.
6. Remove the mirror glass.

Installation Procedure

1. Connect the electrical connectors.
2. Install the mirror glass to the house.
3. Align the mirror glass retaining tabs with the motor.
4. Place your hand on the back of the mirror housing.
5. Using the flat part of your hand press inward until the mirror glass fully seats onto the motor retaining tabs .
6. Inspect the power mirror for proper operation.
7. Remove the masking tape.
8. Place the front side door window in the full up position.

Scheme 9

Inside Rearview Mirror Replacement

Inside Rearview Mirror Bracket Installation

Special Tools

Safety Razor or Utility Knife

Scheme 10

1. Determine the location of the mirror mounting base by marking the outside of the windshield with a marking pencil where the base was previously located. If it is not clear where the base was mounted, use the following steps to determine where the base should be installed: Using a measuring tape, measure the distance between the windshield pillars from the base of the shade line . Using a marking pencil, halfway between the windshield pillars, draw a centerline (1) on the windshield from the roof panel to the windshield base. Draw a perpendicular line intersecting the centerline (2) at that location. The top center of the mirror mounting base will be at the intersection of these lines.
2. Scrape the inside windshield glass thoroughly with a safety razor or utility knife in order to remove all old adhesive.
3. If reinstalling the original mounting base, place the mirror mounting base in a suitable holding device, such as a vice.
4. Scrape the mirror mounting base thoroughly with a safety razor or utility knife in order to remove all old adhesive.
5. Clean the inside windshield glass and the mounting surface of the mirror mounting base thoroughly with a clean cloth saturated with naphtha or a 50/50 mixture (by volume) of clean water and isopropyl alcohol.
6. Use Inside Mirror Adhesive Kit GM P/N 89021329, (Canadian P/N 993362) or equivalent to apply a small amount of activator to the mounting surface of the mirror mounting base.
7. Apply a small amount of activator to the windshield where the mounting base is to be installed.
8. Allow the activator to dry 5 minutes.
9. Apply 1 drop of adhesive to the center of the mirror mounting base.
10. Immediately apply the mounting base to the windshield, ensuring that the mounting base aligns correctly to the marks made on the outside of the windshield.
11. Hold the mounting base firmly in place for 1 minute.
12. Allow the adhesive to set for 15 minutes.
13. Install the mirror to the mirror mounting base and fasten, if necessary.
14. Connect the electrical connector and install the wire cover, if equipped.

Inside Rearview Mirror with Automatic Day-Night System Operation

The inside rearview mirror uses 2 photocell sensors. One sensor is the rear light sensor, located on the face side of the mirror, facing the rear of the vehicle. The rear light sensor is used to determine light conditions present at the mirror face. The other sensor is the front light sensor, located on the backside of the mirror, facing the front of the vehicle. The front light sensor is used to determine the exterior light conditions at the front of the vehicle. With a low exterior light condition detected by the front light sensor and a high light condition from the rear light sensor, the inside rearview mirror will automatically darken the face of the inside rearview mirror and the left outside rearview mirror. The inside rearview mirror provides a signal circuit and a low reference circuit to the left mirror face to darken the mirror when needed.

With the gear selector lever in the REVERSE position, backup lamp supply voltage is supplied as an input to the inside rearview mirror. The mirror monitors this input to disable the automatic day-night feature. This allows the driver to see objects in the mirror clearly when backing up, regardless of the rear light sensor status.

Driver Outside Rearview Mirror with Automatic Day-Night System Operation (RPO DNP only)

The automatic day-night feature of the driver outside rearview mirror is controlled by the inside rearview mirror. The inside rearview mirror supplies a signal and low reference to the driver outside rearview mirror. At night, with the automatic day-night feature enabled, the driver outside rearview mirror will automatically darken with the inside rearview mirror to reduce glare from headlamps behind the vehicle.

Inside Rearview Mirror with Automatic Day-Night Switch Operation

The ON/OFF switch is used to enable/disable the automatic day-night feature of the inside rearview mirror. To enable the automatic day-night feature, turn the ignition ON and depress the ON/OFF switch. A green indicator will illuminate on the inside rearview mirror when the automatic day-night feature is enabled. To disable the automatic day-night feature depress the ON/OFF switch.

If the vehicle has a rear vision camera display in the inside rearview mirror, the button for turning the dimming feature on or off will not be available.

Heated Outside Rearview Mirror- RPO DNP and DS3

The Driver Door Switch (DDS) and Passenger Door Switch (PDS) control the activation of the heated mirrors. Upon receiving a serial data message indicating a request for rear window defogging, the DDS and PDS will activate the mirror heater output. The mirror heaters will remain active until a new message is received indicating rear window defogger is deactivated, either by driver input or by expiration of a calibrated timer.

Heated Outside Rearview Mirror- RPO DG6

The rear window defogger systems controls the operation of the driver and passenger rearview mirror heaters. When the rear window defogger switch is depressed, the RR DEFOG relay is activated, sending B+ to the driver and passenger rearview mirror heaters. Each heater also receives an individual ground.

Power Mirror System Components

The power mirror system consists of the following components

1. Driver Door Switch (DDS)-An electronic control module with integrated switches and requires programming when replaced
2. Passenger Door Switch (PDS)-An electronic control module that requires programming when replaced
3. Power Mirror Direction Switch-Integrated into DDS and is a 4 position momentary switch that provides a signal input to the DDM for up, down, left and right with mirror switch activation
4. Folding Mirror Switch-Integrated into DDS and is a 3 position switch that allows the operator to extend or retract the mirrors
5. Mirror Select Switch-Integrated into DDS and is a 3 position switch that allows the operator to select the left or right mirror and also a neutral position
6. Left Outside Power Mirror-Contains both the vertical and horizontal mirror motors
7. Right Outside Power Mirror-Contains both the vertical and horizontal mirror motors
8. Horizontal and Vertical Position Sensors-Supplied a 5-volt and low reference by the DDS/PDS and provides a variable voltage signal to the DDS/PDS that is proportional to mirror position
9. Fold Motor-Provides extend and retract movements of the mirror and is serviced as a complete mirror assembly

Each of the outside power mirrors contains 2 reversible motors to provide horizontal and vertical movement of the mirror glass. The vertical motor operates the up and down directions and the horizontal motor operates the left and right directions. Each outside power mirror also contains a reversible fold motor to operate the extend and retract functions.

Power Mirror System Controls

The power mirror switch incorporates a 2-position mirror select switch and a 4-position mirror direction switch. The mirror select switch allows the operator to select the mirror to be moved by selecting the L position for the left power mirror, selecting the R position for the right power mirror or the center which is the neutral/fold position. The mirror direction switch is a 4-position switch that allows the operator to move the selected mirror up, down, left or right.

Power Mirror System Operation

The power mirror switch is integrated into the DDS. The left and right mirror positions of the select switch and 4 positions of the direction switch, when active, will provide a signal to the DDS. Upon receipt of these signals, the DDS will provide battery voltage to the mirror motor up/right control circuit and ground to the mirror motor down control circuit and the mirror will move up. The remainder of the driver mirror functions operate in the same manner as described above except the DDS will supply battery voltage and ground to the appropriate control circuits for the direction selected. If the passenger mirror is selected and a direction switch is activated, the DDM sends a serial data message to the PDS indicating that the passenger mirror was selected and the direction to be commanded. The PDS will then supply battery voltage and ground to the appropriate control circuits for the direction selected.

Memory Mirror System

The DDS and PDS are capable of storing mirror positions and controlling the mirrors to these positions to the preferred settings of 2 different drivers. Each driver will be able to personalize the memory system by positioning the mirrors and seats to their preferred settings. Then press and hold the memory 1 or memory 2 button until an audible chime is heard and the current mirror positions will be stored into memory of the DDS and PDS. Seat position will be stored in the memory seat module (MSM). Once the mirror and seat positions have been stored into memory, a momentary memory 1 or memory 2 switch activation will supply the DDS a battery voltage signal. The DDS, upon receipt of the memory switch signal, with the transmission in park or neutral, will then drive the driver mirror to the corresponding stored memory position. The DDS will also send a serial data message to the PDS indicating that a memory switch activation occurred. The PDS will then drive the passenger mirror to the corresponding stored memory position.

Folding Mirror System Operation-If Equipped

Upon receipt of the required switch input, the DDS will supply battery voltage and ground to the folding mirror motor control circuits to perform the requested extend or retract function. The DDS will also send a serial data message to the PDS indicating the requested function. The PDS will supply battery voltage and ground to the folding mirror motor control circuits to perform the requested extend or retract function.

Power Mirror System Components

The power mirror system consists of the following components

1. Driver Door Switch (DDS)-An electronic control module with integrated switches and requires programming when replaced
2. Passenger Door Switch (PDS)-An electronic control module that requires programming when replaced
3. Power Mirror Direction Switch-Integrated into DDS and is a 4 position momentary switch that provides a signal input to the DDM for up, down, left and right with mirror switch activation
4. Mirror Select Switch-Integrated into DDS and is a 3 position switch that allows the operator to select the left or right mirror and also a neutral position
5. Left Outside Power Mirror-Contains both the vertical and horizontal mirror motors
6. Right Outside Power Mirror-Contains both the vertical and horizontal mirror motors

Each of the outside power mirrors contains 2 reversible motors to provide horizontal and vertical movement of the mirror glass. The vertical motor operates the up and down directions and the horizontal motor operates the left and right directions. Each outside power mirror also contains a reversible fold motor to operate the extend and retract functions.

Power Mirror System Controls

The power mirror switch incorporates a 2-position mirror select switch and a 4-position mirror direction switch. The mirror select switch allows the operator to select the mirror to be moved by selecting the L position for the left power mirror, selecting the R position for the right power mirror or the center which is the neutral/fold position. The mirror direction switch is a 4-position switch that allows the operator to move the selected mirror up, down, left or right.

Power Mirror System Operation

The power mirror switch is integrated into the DDS. The left and right mirror positions of the select switch and 4 positions of the direction switch, when active, will provide a signal to the DDS. Upon receipt of these signals, the DDS will provide battery voltage to the mirror motor up/right control circuit and ground to the mirror motor down control circuit and the mirror will move up. The remainder of the driver mirror functions operate in the same manner as described above except the DDS will supply battery voltage and ground to the appropriate control circuits for the direction selected. If the passenger mirror is selected and a direction switch is activated, the DDM sends a serial data message to the PDS indicating that the passenger mirror was selected and the direction to be commanded. The PDS will then supply battery voltage and ground to the appropriate control circuits for the direction selected.

Power Mirror System Components

The power mirror system consists of the following components

1. Outside Rearview Mirror Switch
2. Mirror Select Switch
3. Left Outside Power Mirror
4. Right Outside Power Mirror

Each of the outside rearview mirrors contains two motors. The vertical motor operates the mirror in the up and down directions, and the horizontal motor operates the mirror in the left and right directions.

Power Mirror System Controls

The outside rearview mirror switch is a four position directional switch: Up, Down, Left and Right. The mirror select switch is a three position switch: L for left, Off for none, and R for right.

Power Mirror System Operation

The outside rearview mirror switch receives power through the battery positive voltage circuit from the power mirror fuse. The power mirror switch also receives a constant ground. The four positions of the direction switch have dual switch contacts. Each of the contacts are connected to opposing sides of the appropriate power mirror motors through the selector switch. The selector switch completes these circuits depending on the position of the selector switch, L or R. If the selector switch is placed in the L position and the up switch is depressed, battery positive voltage will be supplied to the left outside rearview mirror vertical motor through the left mirror motor down control circuit and ground through the left mirror motor left control circuit. If the down switch is depressed, battery positive voltage will be supplied to the left outside rearview mirror vertical motor through the left mirror motor left control circuit and ground through the left mirror motor down control circuit. The remainder of the mirror functions operate in the same manner as described above. Placing the power mirror switch in opposing positions, left/right or up/down, will reverse the polarity to the mirror motor, reversing the direction of movement.

See also:
• Diagnostic System Check - Vehicle
• Strategy Based Diagnosis
• Diagnostic Procedure Instructions
• COMPONENT CONNECTOR END VIEWS - INDEX
• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
• Control Module References
• Diagnostic Repair Verification
• Rear Window Defogger Malfunction
• OnStar Description and Operation
• Checking Aftermarket Accessories
• OnStar Button LED Malfunction
• Backup Lamps Malfunction
• Front Side Door Armrest Switch Mount Plate Replacement (Driver Side Traverse without A45)
• Front Side Door Trim Panel Replacement - Left Side (Acadia)
• Fastener Caution
• DTC B1544, B1600, or B1605