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Power Mirror (Diagnostics & Circuit Tests): Overview Lexus GS III facelift

Mirrors 18 illustrations ~4710 words

SYSTEM DESCRIPTION

  1. POWER MIRROR CONTROL SYSTEM DESCRIPTION This system has the following functions: automatic glare-resistant electrochromic (EC) mirror, reverse shift-linked mirror, electrical remote control type mirror, memory function, and rear window defogger-linked mirror heater.
  2. FUNCTION OF MAIN COMPONENT Components Function Vertical mirror motor Receives signal from door ECU and adjusts remote control mirror vertically Horizontal mirror motor Receives signal from door ECU and adjusts remote control mirror horizontally Mirror retract motor Receives signal from door ECU and retracts and returns remote control mirror Mirror heater Receives signal from door ECU and starts mirror heater EC mirror cell Varies reflection rate of mirror through function of EC elements Mirror retract switch Retracts and returns remote control mirror Mirror retract and return signals are sent to door ECU from integration panel and switch assembly Mirror master switch Consists of R and L switches One must be chosen before mirror control switches can be operated Mirror control switch Mirror R and L signals are sent to door ECU from integration panel and switch assembly After selecting R or L switch, RIGHT, LEFT, UP and DOWN control switches change angle of mirror. Mirror signals are sent to door ECU from integration control and panel assembly Mirror position sensor Detects remote control mirror position This data is detected by door ECU Seat memory switch (driver side) (SET, M1, M2, M3 switch)* When seat memory M1, M2 or M3 switch is pressed while SET switch is being pressed, or M1, M2 or M3 switch is pressed within 3 seconds after SET switch is pressed, signal is input to multiplex network master switch and sent to position control ECU, which records mirror position When M1, M2 or M3 switch is pressed, signal is input to multiplex network master switch and sent to position control ECU, which changes mirror position to recorded position *: w/ Seat position memory
  3. SYSTEM OPERATION The remote control mirror has the following features: Function Outline Manual electrical retractable mirror Retracts remote control mirrors when mirror retract switch is pressed Reverse shift-linked mirror Directs mirror surface downward to improve visibility when driving in reverse and all conditions below are met: Engine switch is on (IG) Shift lever is moved from position other than R to R Mirror master switch is on R or L position Electrical remote control type mirror When mirror control switch is operated, this function moves mirror surface vertically or horizontally to enable driver to attain optimal mirror angle Selecting mirror master switch to R position operates right mirror, and setting it to L position operates left mirror Rear window defogger-linked mirror heater Automatically turns on mirror heater when rear window defogger switch is turned on Rear window defogger and mirror heater automatically turn off after 15 min. Automatic glare-resistant EC mirror Reduce glare / reflection in inner rear view mirror during nighttime driving for safe driving conditions Glare / reflection from vehicle headlights behind could blind driver and cause dangerous driving conditions Memory function* Stores adjusted mirror position in front multiplex network door ECU LH and RH *: w/ Seat position memory

The integration control and panel assembly sends power mirror control switch RIGHT, LEFT, UP and DOWN signals through the multiplex communication line to the front multiplex network door ECU LH and RH to activate the mirror surfaces accordingly.

Scheme 34

Scheme 34: WIRING DIAGRAM
Scheme 34: WIRING DIAGRAM

This circuit detects the conditions of the mirror control switch.

The integration control and panel assembly sends information about the operating condition of the mirror switch (switch input signals) through the BEAN line. Then the switch input signals are sent to the front multiplex network door ECU LH. Mirror adjustment is controlled by the front multiplex network door ECU LH.

Scheme 35

Scheme 35: WIRING DIAGRAM
Scheme 35: WIRING DIAGRAM

Scheme 36

Scheme 36: PROCEDURE
Scheme 36: PROCEDURE

Scheme 37

Scheme 37
Scheme 37
  1. CHECK POWER MIRROR CONTROL FUNCTION Using the outer mirror switch, check if the driver side power mirror can be adjusted. Using the retract switch, check if the driver side power mirror can be retracted and returned. Result Result Proceed to Unable to adjust driver side power mirror A Unable to retract / return driver side power mirror B Unable to adjust and retract / return driver side power mirror C C --> See step 5 B --> GO TO PROBLEM SYMPTOMS TABLE A: Go to next step
  2. READ VALUE USING TECHSTREAM (MIRROR MASTER SWITCH AND MIRROR CONTROL SWITCH) Check the DATA LIST for proper functioning of the mirror master switch and mirror control switch. Integration control and panel assembly Tester Display Measurement Item/Range Normal Condition Diagnostic Note Mirror Selection SW (L) Mirror master switch signal for LH mirror / ON or OFF ON: Switch is in L position OFF: Switch is OFF or in R position - Mirror Position SW (R) Mirror control switch signal (RIGHT) / ON or OFF ON: RIGHT switch is ON OFF: Any switch except RIGHT is ON or all switches are OFF - Mirror Position SW (L) Mirror control switch signal (LEFT) / ON or OFF ON: LEFT switch is ON OFF: Any switch except LEFT is ON or all switches are OFF - Mirror Position SW (Up) Mirror control switch signal (UP) / ON or OFF ON: UP switch is ON OFF: Any switch except UP is ON or all switches are OFF - Mirror Position SW (Dwn) Mirror control switch signal (DOWN) / ON or OFF ON: DOWN switch is ON OFF: Any switch except DOWN is ON or all switches are OFF - NG --> REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY OK: Go to next step
  3. PERFORM ACTIVE TEST USING TECHSTREAM (POWER MIRROR CONTROL FUNCTION) Select the ACTIVE TEST, use Techstream to generate a control command, and then check the power mirror control function. Front multiplex network door ECU LH Tester Display Test Part Control Range Diagnostic Note Mirror Up / Down Mirror vertical operation UP / DOWN - Mirror Right / Left Mirror horizontal operation RIGHT / LEFT - Result Result Proceed to Outer rear view mirror LH does not operate normally A Outer rear view mirror LH operates normally B B --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH A: Go to next step
  4. INSPECT OUTER MIRROR ACTUATOR ASSEMBLY LH (LEFT / RIGHT MOTOR, UP / DOWN MOTOR) Remove the mirror LH. Apply battery voltage and check the operation of the power mirror. OK Measurement Condition Specified Condition Battery positive (+) --> Terminal 1 (MV) Battery negative (-) --> Terminal 10 (M+) Turns upward (A) Battery negative (-) --> Terminal 1 (MV) Battery positive (+) --> Terminal 10 (M+) Turns downward (B) Battery positive (+) --> Terminal 9 (MH) Battery negative (-) --> Terminal 10 (M+) Turns left (C) Battery negative (-) --> Terminal 9 (MH) Battery positive (+) --> Terminal 10 (M+) Turns right (D) NG --> REPLACE OUTER MIRROR ACTUATOR ASSEMBLY LH OK --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH
  5. INSPECT FUSE (FR DOOR LH) Remove the FR DOOR LH fuse from the cowl side junction block LH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  6. CHECK WIRE HARNESS (FRONT MULTIPLEX NETWORK DOOR ECU LH - BATTERY AND BODY GROUND) Disconnect the M9 ECU connector. Measure the voltage and resistance of the wire harness side connector. Standard voltage Tester Connection Specified Condition M9-6 (BDR) - Body ground 11 to 14 V Standard resistance Tester Connection Specified Condition M9-1 (GND) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH

This circuit detects the conditions of the mirror control switch.

The integration control and panel assembly sends information about the operating condition of the mirror switch (switch input signals) through the BEAN line. Then the switch input signals are sent to the front multiplex network door ECU RH. Mirror adjustment is controlled by the front multiplex network door ECU RH.

Scheme 38

Scheme 38: WIRING DIAGRAM
Scheme 38: WIRING DIAGRAM

Scheme 39

Scheme 39: PROCEDURE
Scheme 39: PROCEDURE

Scheme 40

Scheme 40
Scheme 40
  1. CHECK POWER MIRROR CONTROL FUNCTION Using the outer mirror switch, check if the passenger side power mirror can be adjusted. Using the retract switch, check if the passenger side power mirror can be retracted and returned. Result Result Proceed to Unable to adjust passenger side power mirror A Unable to retract / return passenger side power mirror B Unable to adjust and retract / return passenger side power mirror C C --> See step 5 B --> See step 8 A: Go to next step
  2. READ VALUE USING TECHSTREAM (MIRROR MASTER SWITCH AND MIRROR CONTROL SWITCH) Check the DATA LIST for proper functioning of the mirror master switch and mirror control switch. Integration control and panel assembly Tester Display Measurement Item/Range Normal Condition Diagnostic Note Mirror Selection SW (R) Mirror master switch signal for LH mirror / ON or OFF ON: Switch is in R position OFF: Switch is OFF or in L position - Mirror Position SW (R) Mirror control switch signal (RIGHT) / ON or OFF ON: RIGHT switch is ON OFF: Any switch except RIGHT is ON or all switches are OFF - Mirror Position SW (L) Mirror control switch signal (LEFT) / ON or OFF ON: LEFT switch is ON OFF: Any switch except LEFT is ON or all switches are OFF - Mirror Position SW (Up) Mirror control switch signal (UP) / ON or OFF ON: UP switch is ON OFF: Any switch except UP is ON or all switches are OFF - Mirror Position SW (Dwn) Mirror control switch signal (DOWN) / ON or OFF ON: DOWN switch is ON OFF: Any switch except DOWN is ON or all switches are OFF - NG --> See step 9 OK: Go to next step
  3. PERFORM ACTIVE TEST USING TECHSTREAM (POWER MIRROR CONTROL FUNCTION) Select the ACTIVE TEST, use Techstream to generate a control command, and then check the power mirror control function. Front multiplex network door ECU RH Tester Display Test Part Control Range Diagnostic Note Mirror Up / Down Mirror vertical operation UP / DOWN - Mirror Right / Left Mirror horizontal operation RIGHT / LEFT - Result Result Proceed to Outer rear view mirror RH does not operate normally A Outer rear view mirror RH operates normally B B --> See step 10 A: Go to next step
  4. INSPECT OUTER MIRROR ACTUATOR ASSEMBLY RH (LEFT / RIGHT MOTOR, UP / DOWN MOTOR) Remove the mirror RH. Apply battery voltage and check the operation of the power mirror. OK Measurement Condition Specified Condition Battery positive (+) --> Terminal 1 (MV) Battery negative (-) --> Terminal 10 (M+) Turns upward (A) Battery negative (-) --> Terminal 1 (MV) Battery positive (+) --> Terminal 10 (M+) Turns downward (B) Battery positive (+) --> Terminal 9 (MH) Battery negative (-) --> Terminal 10 (M+) Turns left (C) Battery negative (-) --> Terminal 9 (MH) Battery positive (+) --> Terminal 10 (M+) Turns right (D) NG --> See step 11 OK --> See step 7
  5. CHECK FUSE (FR DOOR RH) Remove the FR DOOR RH fuse from the cowl side junction block RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  6. CHECK WIRE HARNESS (FRONT MULTIPLEX NETWORK DOOR ECU RH - BATTERY AND BODY GROUND) Disconnect the M4 ECU connector. Measure the voltage and resistance of the wire harness side connector. Standard voltage Tester Connection Specified Condition M4-6 (BDR) - Body ground 11 to 14 V Standard resistance Tester Connection Specified Condition M4-1 (GND) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK --> See step 7
  7. REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH. Refer to «REMOVAL - Step 13»(ref-382767-S31603084992011012800000)
  8. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-382846-S39160454662011012800000)
  9. REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY. Refer to «REMOVAL - Step 10»(ref-382835-S32109658782011012800000)
  10. REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH. Refer to «REMOVAL - Step 13»(ref-382767-S31603084992011012800000)
  11. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY RH. Refer to «REMOVAL - Step 7»(ref-382835-S21650024622011012800000)

The mirror heater operates when the following conditions are met: 1) the A/C amplifier sends a rear defogger switch signal through the multiplex communication line to the front multiplex network door ECU LH and RH, and 2) the defogger operates.

Scheme 41

Scheme 41: WIRING DIAGRAM
Scheme 41: WIRING DIAGRAM

Scheme 42

Scheme 42: PROCEDURE
Scheme 42: PROCEDURE

Scheme 43

Scheme 43
Scheme 43
  1. CHECK DEFOGGER SYSTEM Check that the defogger operates normally. OK Defogger operates normally. NG --> GO TO DEFOGGER SYSTEM OK: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (MIRROR HEATER FUNCTION) Select the ACTIVE TEST, use Techstream to generate a control command, and then check the mirror heater function. Front multiplex network door ECU LH, RH Tester Display Test Details Control Range Diagnostic Note Mirror Heater Mirror heater operation OFF / ON - Result Front multiplex network door ECU LH: Result Proceed to Outer rear view mirror LH does not operate normally A Outer rear view mirror LH operates normally B Result Front multiplex network door ECU RH: Result Proceed to Outer rear view mirror RH does not operate normally C Outer rear view mirror RH operates normally D D --> See step 6 C --> See step 4 B --> See step 5 A: Go to next step
  3. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH (MIRROR HEATER) Remove the mirror LH. Check the operation of the mirror heater. Measure the resistance between terminals 4 and 12 of the connector. Standard resistance 3.6 to 4.8 ohms at 25°C (75 °F) Apply battery voltage and check the mirror heater operation. OK Measurement Condition Specified Condition Battery positive (+) --> Terminal 4 (+) Battery negative (-) --> Terminal 12 (-) Mirror becomes warm HINT: It will take a short time for the mirror to become warm. NG --> REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH OK --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH
  4. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH (MIRROR HEATER) Remove the mirror RH. Check the operation of the mirror heater. Measure the resistance between terminals 4 and 12 of the connector. Standard resistance 3.6 to 4.8 ohms at 25°C (75°F) Apply battery voltage and check the mirror heater operation. OK Measurement Condition Specified Condition Battery positive (+) --> Terminal 4 (+) Battery negative (-) --> Terminal 12 (-) Mirror becomes warm HINT: It will take a short time for the mirror to become warm. NG --> REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH OK --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH
  5. CHECK FRONT MULTIPLEX NETWORK DOOR ECU LH Check if the malfunction disappears when a normally functioning front multiplex network door ECU LH is installed. OK Mirror heater operates normally. NG --> REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY OK --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH
  6. CHECK FRONT MULTIPLEX NETWORK DOOR ECU RH Check if the malfunction disappears when a normally functioning front multiplex network door ECU RH is installed. OK Mirror heater operates normally. NG --> REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY OK --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH

This circuit detects the conditions of the mirror retract switch.

The integration control and panel assembly sends information about the operating condition of the mirror retract switch (switch input signals) through the BEAN line. Then the switch input signals are sent to the front multiplex network door ECU LH and RH.

Scheme 44

Scheme 44: WIRING DIAGRAM
Scheme 44: WIRING DIAGRAM

Scheme 45

Scheme 45: PROCEDURE
Scheme 45: PROCEDURE

Scheme 46

Scheme 46
Scheme 46
  1. CHECK POWER MIRROR CONTROL FUNCTION Using the outer mirror switch, check if the power mirrors can be adjusted. Result Result Proceed to Able to adjust power mirrors A Unable to adjust power mirrors B B --> GO TO PROBLEM SYMPTOMS TABLE A: Go to next step
  2. CHECK MIRROR RETRACT FUNCTION Check that the driver side and passenger side mirrors retract normally when operating the mirror retract switch. Result Result Proceed to Outer rear view mirror LH does not operate normally A Outer rear view mirror RH does not operate normally A Outer rear view mirror LH and RH do not operate normally B B --> See step 6 A: Go to next step
  3. PERFORM ACTIVE TEST USING TECHSTREAM (MIRROR RETRACT FUNCTION) Select the ACTIVE TEST, use Techstream to generate a control commend, and then check the mirror retract function. Front multiplex network door ECU LH, RH Tester Display Test Part Control Range Diagnostic Note Mirror Fold / Return Mirror retract operation FOLD / RETURN - Result Front multiplex network door ECU LH: Result Proceed to Outer rear view mirror LH does not operate normally A Outer rear view mirror LH operates normally B Result Front multiplex network door ECU RH: Result Proceed to Outer rear view mirror RH does not operate normally C Outer rear view mirror RH operates normally D D --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH C --> See step 5 B --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH A: Go to next step
  4. INSPECT OUTER MIRROR ACTUATOR ASSEMBLY LH (RETRACTABLE MIRROR MOTOR) Remove the mirror LH. For each mirror position: Disconnect the battery, set the mirror position by hand, connect the battery, and check the retractable mirror's movement. NOTE: Disconnect and reconnect the battery once between each mirror position check. The mirror position cannot be changed manually when the battery is connected. To change the mirror position manually, the battery must be disconnected first. OK Measurement Condition Mirror Position Specified Condition Battery positive (+) --> Terminal 3 (MR) Battery negative (-) --> Terminal 11 (MF) Forward position (A) Moves from (A) to retracted position (E) Battery positive (+) --> Terminal 11 (MF) Battery negative (-) --> Terminal 3 (MR) Forward position (A) Does not move Battery positive (+) --> Terminal 3 (MR) Battery negative (-) --> Terminal 11 (MF) Position between forward position (A) and driving position (C) Moves from (B) to retracted position (E) Battery positive (+) --> Terminal 11 (MF) Battery negative (-) --> Terminal 3 (MR) Position between forward position (A) and driving position (C) Moves from (B) to forward position (A) Battery positive (+) --> Terminal 3 (MR) Battery negative (-) --> Terminal 11 (MF) Driving position (C) Moves from (C) to retracted position (E) Battery positive (+) --> Terminal 11 (MF) Battery negative (-) --> Terminal 3 (MR) Driving position (C) Does not move Battery positive (+) --> Terminal 3 (MR) Battery negative (-) --> Terminal 11 (MF) Position between driving position (C) and retracted position (E) Moves from (D) to retracted position (E) Battery positive (+) --> Terminal 11 (MF) Battery negative (-) --> Terminal 3 (MR) Position between driving position (C) and retracted position (E) Moves from (D) to driving position (C) Battery positive (+) --> Terminal 3 (MR) Battery negative (-) --> Terminal 11 (MF) Retracted position (E) Does not move Battery positive (+) --> Terminal 11 (MF) Battery negative (-) --> Terminal 3 (MR) Retracted position (E) Moves from (E) to driving position (C) NG --> REPLACE OUTER MIRROR ACTUATOR ASSEMBLY LH OK --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH
  5. INSPECT OUTER MIRROR ACTUATOR ASSEMBLY RH (RETRACTABLE MIRROR MOTOR) Remove the mirror RH. For each mirror position: Disconnect the battery, set the mirror position by hand, connect the battery, and check the retractable mirror's movement. NOTE: Disconnect and reconnect the battery once between each mirror position check. The mirror position cannot be changed manually when the battery is connected. To change the mirror position manually, the battery must be disconnected first. OK Measurement Condition Mirror Position Specified Condition Battery positive (+) --> Terminal 3 (MR) Battery negative (-) --> Terminal 11 (MF) Forward position (A) Moves from (A) to retracted position (E) Battery positive (+) --> Terminal 11 (MF) Battery negative (-) --> Terminal 3 (MR) Forward position (A) Does not move Battery positive (+) --> Terminal 3 (MR) Battery negative (-) --> Terminal 11 (MF) Position between forward position (A) and driving position (C) Moves from (B) to retracted position (E) Battery positive (+) --> Terminal 11 (MF) Battery negative (-) --> Terminal 3 (MR) Position between forward position (A) and driving position (C) Moves from (B) to forward position (A) Battery positive (+) --> Terminal 3 (MR) Battery negative (-) --> Terminal 11 (MF) Driving position (C) Moves from (C) to retracted position (E) Battery positive (+) --> Terminal 11 (MF) Battery negative (-) --> Terminal 3 (MR) Driving position (C) Does not move Battery positive (+) --> Terminal 3 (MR) Battery negative (-) --> Terminal 11 (MF) Position between driving position (C) and retracted position (E) Moves from (D) to retracted position (E) Battery positive (+) --> Terminal 11 (MF) Battery negative (-) --> Terminal 3 (MR) Position between driving position (C) and retracted position (E) Moves from (D) to driving position (C) Battery positive (+) --> Terminal 3 (MR) Battery negative (-) --> Terminal 11 (MF) Retracted position (E) Does not move Battery positive (+) --> Terminal 11 (MF) Battery negative (-) --> Terminal 3 (MR) Retracted position (E) Moves from (E) to driving position (C) NG --> REPLACE OUTER MIRROR ACTUATOR ASSEMBLY RH OK --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH
  6. READ VALUE USING TECHSTREAM (MIRROR RETRACT SWITCH) Check the DATA LIST for proper functioning of the mirror retract switch. Integration control and panel assembly Tester Display Measurement Item/Range Normal Condition Diagnostic Note Outer Mirror Fold SW Mirror retract signal / ON or OFF ON: Switch is ON (retracting) OFF: Switch is OFF (returning) - OK On tester screen, each item changes between ON and OFF according to above chart. NG --> REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY OK --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU (LH, RH)

When the seat memory M1, M2 or M3 switch is pressed, the multiplex network master switch assembly sends a memory switch status signal to the position control ECU and switch assembly LH (driver side). then the position control ECU and switch assembly LH send the following to the front multiplex network door ECU LH and RH: 1) a memory M1, M2 or M3 call signal, and 2) driver and passenger seat mirror position call signals recorded in memory. When the door ECU LH and RH receive the memory M1, M2 or M3 call signal, and then receive the driver and passenger seat mirror position replay signal, the door ECU LH and RH activate the mirror control motors to move the mirrors to the previously recorded positions.

Scheme 47

Scheme 47: WIRING DIAGRAM
Scheme 47: WIRING DIAGRAM

Scheme 48

Scheme 48
Scheme 48

Scheme 49

Scheme 49: PROCEDURE
Scheme 49: PROCEDURE

Scheme 50

Scheme 50
Scheme 50
  1. CHECK SEAT MEMORY SWITCH FUNCTION (SEAT POSITION MEMORY FUNCTION) Check that the driver side seat can be moved using the seat memory switch. OK Driver side seat can be moved using seat memory switch. NG --> GO TO FRONT POWER SEAT CONTROL SYSTEM OK: Go to next step
  2. CHECK SEAT MEMORY SWITCH FUNCTION (REGISTRATION OF SEAT MEMORY SWITCH) Check that the memory operation is properly completed. HINT: A buzzer sounds when the door mirror position and mirror facing direction are memorized. NOTE: The seat position will not be recorded if the SET switch and 2 or more of the memory switches (for example, M1 and M2) are pressed simultaneously. If the operation fails, the mirror facing direction will not be memorized until the SET switch is turned off. The mirror facing direction will not be memorized when the mirror is operated manually. OK Driver side seat position can be memorized using seat memory switch (driver side). NG --> GO TO FRONT POWER SEAT CONTROL SYSTEM OK: Go to next step
  3. READ VALUE USING TECHSTREAM (MIRROR POSITION SENSOR) Check the DATA LIST for proper functioning of the mirror position sensor. Front multiplex network door ECU LH, RH Tester Display Measurement Item/Display Normal Condition Diagnostic Note Mirror Position Sensor (V) Vertical mirror position / Min.: 0, Max.: 5 V Within 0 to 5 V - Mirror Position Sensor (V) Horizontal mirror position / Min.: 0, Max.: 5 V Within 0 to 5 V - OK Output voltage is as shown in table above. OK --> REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY NG: Go to next step
  4. INSPECT OUTER MIRROR ACTUATOR ASSEMBLY Disconnect the z5or z6 mirror connector. Apply battery and dry cell battery voltage to the terminals as shown in the table below. Measure the voltage while the mirror moves between the fully downward and fully upward positions. Standard voltage Outer rear view mirror assembly LH (driver side) Outer rear view mirror assembly RH (passenger side) Measurement Connection (Battery) Measurement Connection (Dry Cell Battery) Voltmeter Condition Mirror Condition Specified Condition Battery positive (+) --> Terminal 10 (M+) Battery negative (-) --> Terminal 1 (MV) Battery positive (+) --> Terminal 5 (VC) Battery negative (-) --> Terminal 14 (E1) Positive (+) lead --> Terminal 6 (VSSL) Negative (-) lead --> Terminal 14 (E1) Turns fully downward 0 to 1.0 V Battery positive (+) --> Terminal 1 (MV) Battery negative (-) --> Terminal 10 (M+) Battery positive (+) --> Terminal 5 (VC) Battery negative (-) --> Terminal 14 (E1) Positive (+) lead --> Terminal 6 (VSSL) Negative (-) lead --> Terminal 14 (E1) Turns fully upward 2.8 to 5.0 V Measurement Connection (Battery) Measurement Connection (Dry Cell Battery) Voltmeter Condition Mirror Condition Specified Condition Battery positive (+) --> Terminal 10 (M+) Battery negative (-) --> Terminal 1 (MV) Battery positive (+) --> Terminal 5 (VC) Battery negative (-) --> Terminal 14 (E1) Positive (+) lead --> Terminal 6 (VSSR) Negative (-) lead --> Terminal 14 (E1) Turns fully downward 0 to 1.0 V Battery positive (+) --> Terminal 1 (MV) Battery negative (-) --> Terminal 10 (M+) Battery positive (+) --> Terminal 5 (VC) Battery negative (-) --> Terminal 14 (E1) Positive (+) lead --> Terminal 6 (VSSR) Negative (-) lead --> Terminal 14 (E1) Turns fully upward 2.8 to 5.0 V Measure the voltage while the mirror moves between the fully left and fully right positions. Standard voltage Outer rear view mirror assembly LH (driver side) Outer rear view mirror assembly RH (passenger side) Measurement Connection (Battery) Measurement Connection (Dry Cell Battery) Voltmeter Condition Mirror Condition Specified Condition Battery positive (+) --> Terminal 9 (MH) Battery negative (-) --> Terminal 10 (+M) Battery positive (+) --> Terminal 5 (VC) Battery negative (-) --> Terminal 14 (E1) Positive (+) lead --> Terminal 13 (HSSL) Negative (-) lead --> Terminal 14 (E1) Turns to left fully 2.8 to 5.0 V Battery positive (+) --> Terminal 10 (M+) Battery negative (-) --> Terminal 9 (MH) Battery positive (+) --> Terminal 5 (VC) Battery negative (-) --> Terminal 14 (E1) Positive (+) lead --> Terminal 13 (HSSL) Negative (-) lead --> Terminal 14 (E1) Turns to right fully 0 to 1.0 V Measurement Connection (Battery) Measurement Connection (Dry Cell Battery) Voltmeter Condition Mirror Condition Specified Condition Battery positive (+) --> Terminal 9 (MH) Battery negative (-) --> Terminal 10 (M+) Battery positive (+) --> Terminal 5 (VC) Battery negative (-) --> Terminal 14 (E1) Positive (+) lead --> Terminal 13 (HSSR) Negative (-) lead --> Terminal 14 (E1) Turns to left fully 0 to 1.0 V Battery positive (+) --> Terminal 10 (M+) Battery negative (-) --> Terminal 9 (MH) Battery positive (+) --> Terminal 5 (VC) Battery negative (-) --> Terminal 14 (E1) Positive (+) lead --> Terminal 13 (HSSR) Negative (-) lead --> Terminal 14 (E1) Turns to right fully 2.8 to 5.0 V Result Result Proceed to Outer rear view mirror LH operates normally A Outer rear view mirror RH operates normally B Outer rear view mirror LH does not operate normally C Outer rear view mirror RH does not operate normally D D --> REPLACE OUTER MIRROR ACTUATOR ASSEMBLY RH C --> REPLACE OUTER MIRROR ACTUATOR ASSEMBLY LH B --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH A --> REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH

When the seat memory M1, M2 or M3 switch is pressed, the position control ECU (driver side) memory's driver and passenger seat mirror position signal is sent through the multiplex communication line to the front multiplex network door ECU LH and RH. The front multiplex network door ECU LH and RH then activate the mirror control motors to move the mirrors to the previously recorded positions.

Scheme 51

Scheme 51: WIRING DIAGRAM
Scheme 51: WIRING DIAGRAM

When the reverse signal is sent from the ECM through the multiplex communication line to the front multiplex network door ECU LH, the ECU activates the outer rear view mirror assembly LH and RH reverse shift-linked function.

HINT

The reverse shift-linked function will not occur when the mirror master switch is in the neutral position (OFF).

More articles — Power Mirror (Diagnostics & Circuit Tests)