Part 1
Rear View Mirrors - Exterior
Pinpoint Test A: The Memory Mirror is Inoperative
Normal Operation
Under normal operation, the exterior mirror control switch receives voltage from Smart Junction Box (SJB) fuse 13 (5A) through 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) and CPM23 (GY) to send input signals to the Driver Door Module (DDM). The DDM (Driver Door Module) controls the LH exterior mirror motor movement by supplying the appropriate voltage and ground to circuits RPM05 (VT/GN), CPM28 (BU/BN) and CPM29 (GN). The DDM (Driver Door Module) communicates with the Driver Seat Module (DSM) through the Medium Speed Controller Area Network (MS-CAN) whenever the DDM (Driver Door Module) receives an input signal from the exterior mirror control switch for the RH mirror. The DSM (Driver Seat Module) controls the RH exterior mirror motor movement by supplying the appropriate voltage and ground to circuits CPM31 (YE/GY)/CPM06 (GN/WH), 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 DDM (Driver Door Module) supplies the LH exterior mirror feedback potentiometer reference voltage through circuit LPM30 (GY/VT) and ground through circuit RPM30 (YE). The DSM (Driver Seat Module) supplies the RH exterior mirror feedback potentiometer reference voltage through circuit LPM30 (GY/VT)/LPM12 (BU/GY) and ground through circuit RPM30 (YE)/RPM12 (VT/WH). The DDM (Driver Door Module) 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 (Driver Seat Module) receives feedback from the RH exterior mirror feedback potentiometer through left/right circuit VPM37 (BU/OG) and up/down circuit VPM38 (BN/GN).
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- DDM (Driver Door Module)
- DSM (Driver Seat Module)
- Exterior mirror motor
- Exterior mirror
- Exterior mirror control switch
PINPOINT TEST A : 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.
A1 RETRIEVE THE DTCs FROM THE DSM (Driver Seat Module) AND DDM (Driver Door Module)
- Use the recorded DSM (Driver Seat Module) and DDM (Driver Door Module) DTCs from the continuous and on-demand self tests.
Are any DTCs retrieved?
Yes
If DTC B1667 or B1668 - If other DTCs are present, diagnose them first. If no other DTCs are present, INSPECT the LH exterior mirror motor for foreign material, damage or a binding condition. If no condition is found, GO to A16.
If DTC B1669 or B1670 - If other DTCs are present, diagnose them first. If no other DTCs are present, INSPECT the RH exterior mirror motor for foreign material, damage or a binding condition. If no condition is found, GO to A18.
If DTC B1733, B1737, B1741 or B1745 - CARRY OUT the Exterior Mirror Control Switch Component Test.
If the switch tests OK, GO to A20.
If DTC B2223, GO to A21.
If DTC B2224, GO to A23.
If DTC B2312 or B2316, GO to A25.
If DTC B2314 or B2318, GO to A27.
If DTC B2320 or B2324, GO to A28.
If DTC B2322 or B2326, GO to A30.
No
GO to A2.
A2 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 momentarily using the exterior mirror control switch?
Yes
GO to A9.
No
GO to A3.
A3 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 A4.
No
INSTALL a new exterior mirror control switch. REFER to Exterior Mirror Control Switch . TEST the system for normal operation.
A4 CHECK FOR VOLTAGE TO THE EXTERIOR MIRROR CONTROL SWITCH
- Measure the voltage between exterior mirror control switch C527-3, circuit SBP13 (GY/RD), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to A5.
No
VERIFY that SJB (Smart Junction Box) fuse 13 (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. TEST the system for normal operation. Electrical Diagrams
A5 CHECK GROUND TO THE EXTERIOR MIRROR CONTROL SWITCH
- Measure the resistance between exterior mirror control switch C527-1, circuit GD133 (BK), harness side and ground.
Is the resistance less than 5 ohms?
Yes
GO to A6.
No
REPAIR the circuit. TEST the system for normal operation.
A6 CHECK COMMON CIRCUIT FOR A SHORT TO VOLTAGE
- Disconnect: DDM (Driver Door Module) C501B.
- 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 A7.
A7 CHECK COMMON CIRCUIT FOR A SHORT TO GROUND
- 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 A8.
No
REPAIR the circuit. TEST the system for normal operation.
A8 CHECK COMMON CIRCUIT FOR AN OPEN
- Measure the resistance between exterior mirror control switch C527-6, circuit CPM23 (GY), harness side and DDM (Driver Door Module) C501B-11, circuit CPM23 (GY), harness side.
Is the resistance less than 5 ohms?
Yes
GO to A32.
No
REPAIR the circuit. TEST the system for normal operation.
A9 CHECK THE OPERATION OF THE RH MIRROR
- Operate the mirrors using the exterior mirror control switch.
Does the RH mirror operate correctly using the exterior mirror control switch?
Yes
GO to A10.
No
GO to A13.
A10 CHECK CIRCUIT RPM30 (YE) FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: Exterior Mirror C516.
- Disconnect: DDM (Driver Door Module) C501A.
- Ignition ON.
- Measure the voltage between DDM (Driver Door Module) C501A-21, circuit RPM30 (YE), harness side and ground.
Is any voltage present?
Yes
REPAIR the circuit. TEST the system for normal operation.
No
GO to A11.
A11 CHECK CIRCUIT LPM30 (GY/VT) FOR A SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between DDM (Driver Door Module) C501A-9, circuit LPM30 (GY/VT), harness side and ground.
Is the resistance greater than 10,000 ohms?
Yes
GO to A12.
No
REPAIR the circuit. TEST the system for normal operation.
A12 CHECK CIRCUITS RPM30 (YE) AND LPM30 (GY/VT) FOR AN OPEN
- Measure the resistance between DDM (Driver Door Module) C501A, harness side and exterior mirror C516, harness side using the following chart:
DDM (Driver Door Module) Circuit LH Exterior Mirror C501A-9 LPM30 (GY/VT) C516-10 C501A-21 RPM30 (YE) C516-12
Are the resistances less than 5 ohms?
Yes
CHECK the LH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor 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 . TEST the system for normal operation.
No
REPAIR the circuit(s). TEST the system for normal operation.
A13 CHECK CIRCUIT RPM30 (YE) FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: Exterior Mirror C625.
- Disconnect: DSM (Driver Seat Module) C341D.
- Ignition ON.
- Measure the voltage between DSM (Driver Seat Module) C341D-11, circuit RPM30 (YE), harness side and ground.
Is any voltage present?
Yes
REPAIR the circuit. TEST the system for normal operation.
No
GO to A14.
A14 CHECK CIRCUIT LPM30 (GY/VT) FOR A SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between DSM (Driver Seat Module) C341D-1, circuit LPM30 (GY/VT), harness side and ground.
Is the resistance greater than 10,000 ohms?
Yes
GO to A15.
No
REPAIR the circuit. TEST the system for normal operation.
A15 CHECK CIRCUITS LPM30 (GY/VT)/LPM12 (BU/GY) AND RPM30 (YE)/RPM12 (VT/WH) FOR AN OPEN
- Measure the resistance between DSM (Driver Seat Module) C341D, harness side and exterior mirror C625, harness side using the following chart:
DSM (Driver Seat Module) Circuit RH Exterior Mirror C341D-1 LPM30 (GY/VT)/ LPM12 (BU/GY) C625-10 C341D-11 RPM30 (YE)/ RPM12 (VT/WH) C625-12
Are the resistances less than 5 ohms?
Yes
CHECK the RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor 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 . TEST the system for normal operation.
No
REPAIR the circuit(s). TEST the system for normal operation.
A16 CHECK THE LH EXTERIOR MIRROR FOR VOLTAGE FROM THE DDM (Driver Door Module)
- Ignition OFF.
- Disconnect: LH Exterior Mirror C516.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DDM (Driver Door Module) DataLogger.
- DTC B1667: Measure the voltage between ground and LH exterior mirror:
- C516-1, circuit CPM29 (GN), harness side while toggling the LH exterior mirror DDM (Driver Door Module) PID DR_UP to On.
- C516-2, circuit RPM05 (VT/GN), harness side while toggling the LH exterior mirror DDM (Driver Door Module) PID DR_DOWN to On.
- DTC B1668: Measure the voltage between ground and LH exterior mirror:
- C516-2, circuit RPM05 (VT/GN), harness side while toggling the LH exterior mirror DDM (Driver Door Module) PID DR_LEFT to On.
- C516-4, circuit CPM28 (BU/BN), harness side while toggling the LH exterior mirror DDM (Driver Door Module) PID DR_RIGHT to On.
Do the voltages momentarily change from 0 volt 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 motor for open circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new 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.
No
GO to A17.
A17 CHECK CIRCUITS RPM05 (VT/GN), CPM28 (BU/BN) AND CPM29 (GN) FOR AN OPEN
- Ignition OFF.
- Disconnect: DDM (Driver Door Module) C501A.
- Measure the resistance between LH exterior mirror C516, harness side and DDM (Driver Door Module) C501A, harness side using the following chart:
DTC LH Exterior Mirror Circuit DDM (Driver Door Module) B1667 C516-1 CPM29 (GN) C501A-4 B1667 and B1668 C516-2 RPM05 (VT/GN) C501A-2 B1668 C516-4 CPM28 (BU/BN) C501A-5
Are the resistances less than 5 ohms?
Yes
GO to A32.
No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.