Pinpoint Test D: The Memory Mirror Is Inoperative
Rear View Mirrors - Exterior
Pinpoint Test D: The Memory Mirror is Inoperative
Refer to Wiring Diagram Set 124, Power Mirrors for schematic and connector information Electrical Diagrams.
Normal Operation
Under normal operation, the exterior mirror control switch sends voltage and ground inputs to the Driver Seat Module (DSM) which controls mirror movement by providing the appropriate voltage and ground polarity to the LH/RH exterior mirror up/down and left/right motors. The LH and RH exterior mirrors each contain potentiometers for up/down and left/right position status. The DSM (Driver Seat Module) supplies the LH and RH exterior mirror feedback potentiometers a reference voltage and reference ground. The DSM (Driver Seat Module) uses these feedback signals to store/recall mirror positions.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Exterior mirror control switch
- Exterior mirror motor
- Exterior mirror
- DSM (Driver Seat Module)
PINPOINT TEST D : THE MEMORY MIRROR IS INOPERATIVE
NOTICE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
D1 RETRIEVE THE DTCs FROM THE DSM (Driver Seat Module)
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test- DSM (Driver Seat Module).
Are any DTCs retrieved?
Yes
If DTC B1667 or B1668 is present with other DTCs, DIAGNOSE the other DTCs first.
If DTC B1667 or B1668 is present with no other DTCs, INSPECT the LH exterior mirror motor for foreign material, damage or a binding condition. If no condition is found, GO to D10.
If DTC B1669 or B1670 is present with other DTCs, DIAGNOSE the other DTCs first.
If DTC B1669 or B1670 is present with no other DTCs, INSPECT the RH exterior mirror motor for foreign material, damage or a binding condition. If no condition is found, GO to D12.
For DTCs B1733, B1737, B1741 or B1745, GO to D14.
For DTC B2223, GO to D17.
For DTC B2224, GO to D19.
For DTCs B2312, B2316, B2320 or B2324, GO to D21.
For DTCs B2314, B2318, B2322 or B2326, GO to D24.
For all other DSM (Driver Seat Module) DTCs, REFER to Seats.
No
GO to D2.
D2 CHECK OPERATION OF THE MIRRORS FROM THE EXTERIOR MIRROR CONTROL SWITCH
- Operate the mirrors using the exterior mirror control switch.
Do the LH or RH mirrors operate using the exterior mirror control switch?
Yes
If the LH OR RH exterior mirror operates correctly in at least one direction GO to D9.
No
If both the LH and RH exterior mirrors are inoperative, GO to D3.
D3 CHECK THE EXTERIOR MIRROR CONTROL SWITCH
- Ignition OFF.
- Disconnect: Exterior Mirror Control Switch C527.
- Carry out the Exterior Mirror Control Switch Component Test.
Did the exterior mirror control switch pass the component test?
Yes
GO to D4.
No
INSTALL a new exterior mirror control switch. REFER to Exterior Mirror Control Switch . TEST the system for normal operation.
D4 CHECK FOR VOLTAGE TO THE EXTERIOR MIRROR CONTROL SWITCH
- For Edge, measure the voltage between exterior mirror control switch C527-3, circuit SBP07 (WH/RD), harness side and ground.
- For MKX, measure the voltage between exterior mirror control switch C527-1, circuit SBP07 (WH/RD), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to D5.
No
VERIFY that BCM (Body Control Module) fuse 7 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short Electrical Diagrams. TEST the system for normal operation.
D5 CHECK FOR GROUND TO THE EXTERIOR MIRROR CONTROL SWITCH
- For Edge, measure the resistance between exterior mirror control switch C527-1, circuit GD133 (BK), harness side and ground.
- For MKX, measure the resistance between exterior mirror control switch C527-3, circuit GD133 (BK), harness side and ground.
Is the resistance less than 5 ohms?
Yes
GO to D6.
No
REPAIR the circuit. TEST the system for normal operation.
D6 CHECK THE MIRROR SWITCH COMMON CIRCUIT FOR A SHORT TO VOLTAGE
- Disconnect: DSM (Driver Seat Module) C3299D.
- Ignition ON.
- Measure the voltage between exterior mirror control switch C527-6, circuit CPM23 (GY), harness side and ground.
Is any voltage present?
Yes
REPAIR the circuit. TEST the system for normal operation.
No
GO to D7.
D7 CHECK THE MIRROR SWITCH COMMON CIRCUIT FOR A SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between exterior mirror control switch C527-6, circuit CPM23 (GY) harness side and ground.
Is the resistance greater than 10,000 ohms?
Yes
GO to D8.
No
REPAIR the circuit. TEST the system for normal operation.
D8 CHECK THE MIRROR SWITCH COMMON CIRCUIT FOR AN OPEN
- Measure the resistance between DSM (Driver Seat Module) C3299D-16, circuit CPM23 (GY), harness side and exterior mirror control switch C527-6, circuit CPM23 (GY), harness side.
Is the resistance less than 5 ohms?
Yes
GO to D25.
No
REPAIR the circuit. TEST system for normal operation.
D9 CHECK THE EXTERIOR MIRROR SWITCH CIRCUITS FOR AN OPEN
- Disconnect: Exterior Mirror Control Switch C527.
- Disconnect: DSM (Driver Seat Module) C3299D.
- Measure the resistance between exterior mirror control switch C527, harness side and DSM (Driver Seat Module) C3299D, harness side using the following chart:
Exterior Mirror Switch Circuit DSM (Driver Seat Module) C527-2 CPM21 (YE/VT) C3299D-17 C527-5 CPM17 (BU/GN) C3299D-19 C527-7 CPM20 (BN/WH) C3299D-18 C527-8 CPM16 (BN/BU) C3299D-20
Are the resistances less than 5 ohms?
Yes
GO to D25.
No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
D10 CHECK THE LH EXTERIOR MIRROR FOR VOLTAGE WHILE COMMANDING THE DSM (Driver Seat Module) PIDs
- Disconnect: LH Exterior Mirror C516.
- Enter the following diagnostic mode on the scan tool: DataLogger- DSM (Driver Seat Module).
- DTC B1667: Measure the voltage between ground and LH exterior mirror:
- C516-1, circuit CPM29 (GN), harness side while toggling the DSM (Driver Seat Module) PID Driver's Mirror Up (DR_UP) to On.
- C516-2, circuit CPM26 (WH), harness side while toggling the DSM (Driver Seat Module) PID Driver's Mirror Down (DR_DOWN) to On.
- DTC B1668: Measure the voltage between ground and LH exterior mirror:
- C516-3, circuit CPM26 (WH), harness side while toggling the DSM (Driver Seat Module) PID Driver's Mirror Left (DR_LEFT) to On.
- C516-4, circuit CPM28 (BU/BN), harness side while toggling the DSM (Driver Seat Module) PID Driver's Mirror Right (DR_RIGHT) to On.
Do the voltages momentarily change from 0 volts to greater than 10 volts when the active command is toggled ON?
Yes
CHECK the LH exterior mirror jumper harness between the vehicle harness and the exterior mirror motors for open circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new LH exterior mirror. REFER to Exterior Mirror . If the jumper harness is OK, INSTALL a new LH exterior mirror motor. REFER to Exterior Mirror Motor . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
GO to D11.
D11 CHECK THE LH EXTERIOR MIRROR CONTROL OUTPUT CIRCUITS FOR AN OPEN
- Ignition OFF.
- Disconnect: DSM (Driver Seat Module) C3299D.
- Measure the resistance between LH exterior mirror C516, harness side and DSM (Driver Seat Module) C3299D, harness side using the following chart:
DTC LH Exterior Mirror Circuit DSM (Driver Seat Module) B1667 C516-1 CPM29 (GN) C3299D-4 B1667 C516-2 CPM26 (WH) C3299D-2 B1668 C516-3 CPM26 (WH) C3299D-2 B1668 C516-4 CPM28 (BU/BN) C3299D-5
Are the resistances less than 5 ohms?
Yes
GO to D25.
No
REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
D12 CHECK THE RH EXTERIOR MIRROR FOR VOLTAGE WHILE COMMANDING THE DSM (Driver Seat Module) PIDs
- Disconnect: RH Exterior Mirror C622.
- Enter the following diagnostic mode on the scan tool: DSM (Driver Seat Module) DataLogger.
- DTC B1669: Measure the voltage between ground and RH exterior mirror:
- C622-1, circuit CPM34 (WH/BN), harness side while toggling the DSM (Driver Seat Module) PID Passenger's Mirror Up (PR_UP) to On.
- C622-2, circuit CPM31 (YE/GY), harness side while toggling the DSM (Driver Seat Module) PID Passenger's Mirror Down (PR_DOWN) to On.
- DTC B1670: Measure the voltage between ground and RH exterior mirror:
- C622-3, circuit CPM31 (YE/GY), harness side while toggling the DSM (Driver Seat Module) PID Passenger's Mirror Left (PR_LEFT) to On.
- C622-4, circuit CPM33 (WH/VT), harness side while toggling the DSM (Driver Seat Module) PID Passenger's Mirror Right (PR_RIGHT) to On.
Do the voltages momentarily change from 0 volts to greater than 10 volts when the active command is toggled ON?
Yes
CHECK the RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motors for open circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new RH exterior mirror. REFER to Exterior Mirror . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to Exterior Mirror Motor . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
GO to D13.
D13 CHECK THE RH EXTERIOR MIRROR CONTROL OUTPUT CIRCUITS FOR AN OPEN
- Ignition OFF.
- Disconnect: DSM (Driver Seat Module) C3299D.
- Measure the resistance between RH exterior mirror C622, harness side and DSM (Driver Seat Module) C3299D, harness side using the following chart:
DTC RH Exterior Mirror Circuit DSM (Driver Seat Module) B1669 C622-1 CPM34 (WH/BN) C3299D-7 B1669 C622-2 CPM31 (YE/GY) C3299D-8 B1670 C622-3 CPM31 (YE/GY) C3299D-8 B1670 C622-4 CPM33 (WH/VT) C3299D-6
Are the resistances less than 5 ohms?
Yes
GO to D25.
No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
D14 CHECK THE EXTERIOR MIRROR CONTROL SWITCH
- Disconnect: Exterior Mirror Control Switch C527.
- Carry out the Exterior Mirror Control Switch component test.
Did the exterior mirror control switch pass the component test?
Yes
GO to D15.
No
INSTALL a new exterior mirror control switch. REFER to Exterior Mirror Control Switch . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
D15 CHECK THE MIRROR CONTROL CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: DSM (Driver Seat Module) C3299D.
- Ignition ON.
- Measure the voltage between exterior mirror control switch C527, harness side and ground using the following chart:
DTC Exterior Mirror Control Switch Circuit B1733 C527-5 CPM17 (BU/GN) B1737 C527-8 CPM16 (BN/BU) B1741 C527-2 CPM21 (YE/VT) B1745 C527-7 CPM20 (BN/WH)
Is any voltage present?
Yes
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
GO to D16.
D16 CHECK THE EXTERIOR MIRROR SWITCH CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between exterior mirror control switch C527, harness side and ground using the following chart:
DTC Exterior Mirror Control Switch Circuit B1733 C527-5 CPM17 (BU/GN) B1737 C527-8 CPM16 (BN/BU) B1741 C527-2 CPM21 (YE/VT) B1745 C527-7 CPM20 (BN/WH)
Is the resistance greater than 10,000 ohms?
Yes
GO to D25.
No
REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
D17 CHECK THE LH EXTERIOR MIRROR CONTROL OUTPUT CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: LH Exterior Mirror C516.
- Disconnect: DSM (Driver Seat Module) C3299D.
- Ignition ON.
- Measure the voltage between LH exterior mirror, harness side and ground using the following chart:
LH Exterior Mirror Circuit C516-1 CPM29 (GN) C516-2 CPM26 (WH) C516-3 CPM26 (WH) C516-4 CPM28 (BU/BN)
Is any voltage present?
Yes
REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
GO to D18.
D18 CHECK THE LH EXTERIOR MIRROR CONTROL OUTPUT CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between LH exterior mirror, harness side and ground using the following chart:
LH Exterior Mirror Circuit C516-1 CPM29 (GN) C516-2 CPM26 (WH) C516-3 CPM26 (WH) C516-4 CPM28 (BU/BN)
Are the resistances greater than 10,000 ohms?
Yes
CHECK the LH exterior mirror jumper harness between the vehicle harness and the exterior mirror motors for shorted circuits or damaged and pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to Exterior Mirror . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to Exterior Mirror Motor . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
D19 CHECK THE RH EXTERIOR MIRROR CONTROL OUTPUT CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: RH Exterior Mirror C622.
- Disconnect: DSM (Driver Seat Module) C3299D.
- Ignition ON.
- Measure the voltage between RH exterior mirror C622, harness side and ground using the following chart:
RH Exterior Mirror Circuit C622-1 CPM34 (WH/BN) C622-2 CPM31 (YE/GY) C622-3 CPM31 (YE/GY) C622-4 CPM33 (WH/VT)
Is any voltage present?
Yes
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
GO to D20.
D20 CHECK THE RH EXTERIOR MIRROR CONTROL OUTPUT CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between RH exterior mirror C622, harness side and ground using the following chart:
RH Exterior Mirror Circuit C622-1 CPM34 (WH/BN) C622-2 CPM31 (YE/GY) C622-3 CPM31 (YE/GY) C622-4 CPM33 (WH/VT)
Are the resistances greater than 10,000 ohms?
Yes
CHECK the RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motors for shorted circuits or damaged and pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to Exterior Mirror . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to Exterior Mirror Motor . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
D21 CHECK THE MIRROR POSITION SENSOR CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect: DSM (Driver Seat Module) C3299D.
- Disconnect:DTC B2312 or B2316: RH Exterior Mirror C622.
- Disconnect:DTC B2320 or B2324: LH Exterior Mirror C516.
- Measure the resistance between DSM (Driver Seat Module), harness side and ground using the following chart:
DSM (Driver Seat Module) Circuit C3299D-1 LPM30 (GY/VT) C3299D-11 RPM30 (YE) C3299D-12 VPM36 (BN/YE) C3299D-13 VPM35 (YE/BU) C3299D-14 VPM38 (BN/GN) C3299D-15 VPM37 (BU/OG)
Are the resistances greater than 10,000 ohms?
Yes
GO to D22.
No
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
D22 CHECK THE MIRROR POSITION SENSOR CIRCUITS FOR AN OPEN
- Measure the resistance between DSM (Driver Seat Module) C3299D, harness side and exterior mirror C516 (LH)/C622 (RH), harness side using the following charts:
DTCs B2312 or B2316
RH Exterior Mirror Circuit DSM (Driver Seat Module) C622-9 VPM38 (BN/GN) C3299D-14 C622-10 LPM30 (GY/VT) C3299D-1 C622-11 VPM37 (BU/OG) C3299D-15 C622-12 RPM30 (YE) C3299D-11
DTCs B2320 or B2324
DSM (Driver Seat Module) Circuit LH Exterior Mirror C3299D-1 LPM30 (GY/VT) C516-10 C3299D-11 RPM30 (YE) C516-12 C3299D-12 VPM36 (BN/YE) C516-9 C3299D-13 VPM35 (GY/VT) C516-11
Are the resistances less than 5 ohms?
Yes
GO to D23.
No
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation.
D23 CHECK THE MIRROR POSITION SENSOR FEED AND RETURN FROM THE DSM (Driver Seat Module)
- Connect: DSM (Driver Seat Module) C3299D.
- Ignition ON.
- For DTCs B2312 or B2316, measure the voltage between RH exterior mirror C622-10, circuit LPM30 (GY/VT), harness side and RH exterior mirror C622-12, circuit RPM30 (YE), harness side.
- For DTCs B2320 or B2324, measure the voltage between LH exterior mirror C516-10, circuit LPM30 (GY/VT), harness side and LH exterior mirror C516-12, circuit RPM30 (YE), harness side.
Is the voltage approximately 5 volts?
Yes
For DTCs B2312 or B2316, CHECK the RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motors for open or shorted circuits and damaged or pushed-out pins.
For DTCs B2320 or B2324, CHECK the LH exterior mirror jumper harness between the vehicle harness and the exterior mirror motors for open or shorted circuits and damaged or pushed-out pins.
If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to Exterior Mirror . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to Exterior Mirror Motor . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
GO to D25.
D24 CHECK THE EXTERIOR MIRROR POSITION SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: DSM (Driver Seat Module) C3299D.
- Disconnect:DTC B2314 or B2318: RH Exterior Mirror C622.
- Disconnect:DTC B2322 or B2326: LH Exterior Mirror C516.
- Ignition ON.
- Measure the voltage between exterior mirror C516 (LH)/C622 (RH), harness side and ground using the following charts:
DTCs B2314 or B2318
RH Exterior Mirror Circuit C622-9 VPM38 (BN/GN) C622-10 LPM30 (GY/VT) C622-11 VPM37 (BU/OG) C622-12 RPM30 (YE)
DTCs B2322 or B2326
LH Exterior Mirror Circuit C516-9 VPM36 (BN/YE) C516-10 LPM30 (GY/VT) C516-11 VPM35 (GY/VT) C516-12 RPM30 (YE)
Is any voltage present?
Yes
REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
For DTCs B2314 or B2318, CHECK the RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motors for open or shorted circuits and damaged or pushed-out pins.
For DTCs B2322 or B2326, CHECK the LH exterior mirror jumper harness between the vehicle harness and the exterior mirror motors for open or shorted circuits and damaged or pushed-out pins.
If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to Exterior Mirror . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to Exterior Mirror Motor . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
D25 CHECK THE DSM (Driver Seat Module) FOR CORRECT OPERATION
- Disconnect all DSM (Driver Seat Module) connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes
INSTALL a new DSM (Driver Seat Module). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.