Rear View Mirror: Overview Ford Flex I

Principles of Operation

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 mirror motor, inspect the jumper harness for open and shorted circuits or damaged and pushed-out pins. If a concern with the exterior mirror jumper harness exists, attempt to repair the jumper.

Only vehicles equipped with memory exterior rear view mirrors are capable of setting DTCs.

Non-Memory Exterior Mirrors

The exterior mirror control switch logic is the selected movement request from the exterior mirror control switch. When the exterior mirror control switch is adjusted to the left, right, up or down position, the exterior mirror control switch will supply voltage and ground to the selected exterior mirror motor to move the exterior mirror glass to the desired position.

Normal Operation

Under normal operation, the exterior mirror control switch receives voltage through circuit SBP13 (GY/RD) and ground through circuit GD133 (BK). The exterior mirror control switch uses circuit CPM23 (GY) as the common circuit for both exterior mirror motor up/down and right/left movement.

This pinpoint test is intended to diagnose the following

1. Fuse
2. Wiring, terminals or connectors
3. Exterior mirror control switch

Under normal operation, the exterior mirror control switch uses circuit CPM23 (GY) as the common circuit for both exterior mirror up/down and right/left movement.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. Exterior mirror control switch
3. Exterior mirror motor
4. Exterior mirror

Under normal operation, the exterior mirror control switch uses circuits CPM16 (BN/BU), CPM17 (BU/GN), CPM20 (BN/WH), CPM21 (YE/VT) and CPM23 (GY) to control the exterior mirror motor movement. The exterior mirror switch controls the LH exterior mirror motor movement by switching voltage and ground to circuits CPM16 (BN/BU), CPM17 (BU/GN) and CPM23 (GY). The exterior mirror switch controls the RH exterior mirror motor movement by switching voltage and ground to circuits CPM20 (BN/WH), CPM21 (YE/VT) and CPM23 (GY).

Mirror Movement

1. When the LH/RH exterior mirror motor receives ground through circuit CPM16 (BN/BU)/CPM20 (BN/WH) and power through circuit CPM23 (GY), the LH/RH exterior mirror motor will operate leftward.
2. When the LH/RH exterior mirror motor receives power through circuit CPM16 (BN/BU)/CPM20 (BN/WH) and ground through circuit CPM23 (GY), the LH/RH exterior mirror motor will operate rightward.
3. When the LH/RH exterior mirror motor receives ground through circuit CPM17 (BU/GN)/CPM21 (YE/VT) and power through circuit CPM23 (GY), the LH/RH exterior mirror motor will operate downward.
4. When the LH/RH exterior mirror motor receives power through circuit CPM17 (BU/GN)/CPM21 (YE/VT) and ground through circuit CPM23 (GY), the LH/RH exterior mirror motor will operate upward.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. Exterior mirror control switch
3. Exterior mirror motor
4. Exterior mirror

Under normal operation, when the rear window defrost switch is depressed to the ON position, the rear window defrost relay closes and voltage is supplied to circuit CRD06 (BN/YE) to Battery Junction Box (BJB) fuse 49 (10A). The heated exterior mirrors receive voltage from circuit CRD13 (GN/VT), through BJB fuse 49 (15A). Ground is supplied to the LH heated exterior mirror through circuit GD133 (BK) and to the RH heated exterior mirror through circuit GD145 (BK/BU).

This pinpoint test is intended to diagnose the following

1. Fuse
2. Wiring, terminals or connectors
3. Exterior mirror glass
4. Exterior mirror

Under normal operation, the exterior mirror control switch receives voltage from circuit SBP13 (GY/RD) and ground from circuit GD133 (BK). The exterior mirror control switch uses circuits CPM16 (BN/BU), CPM17 (BU/GN), CPM20 (BN/WH), CPM21 (YE/VT), CPM23 (GY) and RPM11 (YE/OG) to send input signals to the Driver Seat Module (DSM). The DSM controls the LH exterior mirror motor movement by supplying the appropriate voltage and ground to circuits CPM26 (WH), CPM28 (BU/BN) and CPM29 (GN), or the RH exterior mirror motor movement by supplying the appropriate voltage and ground to circuits CPM31 (YE/GY), CPM33 (WH/VT) and CPM34 (WH/BN).

The memory mirror system uses feedback potentiometers, located in the LH and RH exterior mirror motors, in order to track the movement and position of the LH and RH exterior mirror motors. The DSM supplies the LH and RH exterior mirrors feedback potentiometer reference voltage through circuit LPM30 (GY/VT) and ground through circuit RPM30 (YE). The DSM receives feedback from the LH exterior mirror feedback potentiometer through left/right circuit VPM35 (YE/BU) and up/down circuit VPM36 (BN/YE). The DSM receives feedback from the RH exterior mirror feedback potentiometer through left/right circuit VPM37 (BU/OG) and up/down circuit VPM38 (BN/GN).

DTC DESCRIPTION AND FAULT TRIGGER CONDITIONS

This pinpoint test is intended to diagnose the following

1. Fuse
2. Wiring, terminals or connectors
3. Exterior mirror control switch
4. Exterior mirror
5. DSM

The interior auto-dimming mirror receives voltage from circuit CBP41 (BU) and ground from circuit GD133 (BK). When the vehicle is placed in REVERSE, voltage is sent to the interior mirror through circuit CLS10 (GN/BN) and the interior mirror will turn the dimming feature off. There are 2 photoelectric sensors: one in the front of the interior rear view mirror and one mounted on the glass side of the mirror. If the sensors are blocked, the interior auto-dimming mirror might not work correctly. Always verify both sensors are not physically blocked before attempting to diagnose auto-dimming mirror concerns.

This pinpoint test is intended to diagnose the following

1. Fuse
2. Wiring, terminals or connectors
3. Interior auto-dimming mirror