Mirror: Overview Lexus LS IV

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 MAIN COMPONENT FUNCTION CHART 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 operates 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 outer mirror switch. 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 outer mirror switch. After selecting R or L switch, RIGHT, LEFT, UP and DOWN control switches change angle of mirror. Mirror position sensor Detects remote control mirror position. This data is sent to door ECU. Seat memory switch (for driver side) (SET, M1, M2, M3 switch) When SET switch and M1, M2 or M3 switch are pressed simultaneously, signal is input to door ECU and sent to seat ECU which records mirror position. When M1, M2 or M3 switch is pressed, signal is input to door ECU and sent to seat ECU which changes mirror position to recorded position.
3. SYSTEM OPERATION The remote control mirror has the following features: REMOTE CONTROL MIRROR FUNCTION 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. Setting 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 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 door ECU LH and RH

The outer mirror switch sends power mirror control switch RIGHT, LEFT, UP and DOWN signals through the CAN (can communication) line to the front door ECU LH and RH to activate the mirror surfaces accordingly.

This circuit detects the conditions of the mirror control switch.

The outer mirror switch assembly sends information about the operating condition of the mirror switch (switch input signals) through the CAN (can communication) line. Then the switch input signals are sent to the front door ECU LH. Mirror adjustment is controlled by the front door ECU LH.

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1. CHECK DTC Use the Techstream to check if the CAN communication system is functioning normally. Result: RESULT REFERENCE CHART Result Proceed to CAN DTC is not output A CAN DTC is output B B: GO TO CAN COMMUNICATION SYSTEM (See «HOW TO PROCEED WITH TROUBLESHOOTING»(/lexus/ls/iv-2006-2012/remont/communication-devices/#can-communication) ) 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. D-SEAT SW DATA LIST REFERENCE CHART Tester Display Measurement Item/Range Normal Condition Diagnostic Note Mirror Selection SW (Left) 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 Adjustment Right 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 Adjustment Left 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 Adjustment 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 Adjustment Down 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 - OK: On screen, each item changes between ON and OFF according to above chart. NG: REPLACE OUTER MIRROR SWITCH ASSEMBLY (See «REMOVAL» ) OK: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (POWER MIRROR CONTROL FUNCTION) Select the Active Test, use the Techstream to generate a control command, and then check the power mirror control function. Driver Door ACTIVE TEST REFERENCE CHART Tester Display Test Part Control Range Mirror Up/Down Mirror vertical operation UP/DOWN Mirror Right/Left Mirror horizontal operation RIGHT/LEFT Result: RESULT REFERENCE CHART Result Proceed to Outer rear view mirror LH does not operate normally A Outer rear view mirror LH operates normally B B: REPLACE OUTER MIRROR SWITCH ASSEMBLY (See «REMOVAL» ) A: Go to next step
4. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH (LEFT/RIGHT MOTOR, UP/DOWN MOTOR) Remove the mirror LH (see «REMOVAL» ). Apply battery voltage and check the operation of the power mirror. OK VOLTAGE REFERENCE CHART Measurement Condition Specified Condition Battery positive (+) --> Terminal 1 (RMVR) Battery negative (-) --> Terminal 10 (RM+R) Turns upward (A) Battery negative (-) --> Terminal 1 (RMVR) Battery positive (+) --> Terminal 10 (RM+R) Turns downward (B) Battery positive (+) --> Terminal 9 (RMHR) Battery negative (-) --> Terminal 10 (RM+R) Turns left (C) Battery negative (-) --> Terminal 9 (RMHR) Battery positive (+) --> Terminal 10 (RM+R) Turns right (D) NG: REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH (See «REMOVAL» ) OK: REPLACE FRONT DOOR ECU LH (See «REMOVAL» )

The circuit detects the conditions of the mirror control switch.

The outer mirror switch sends information about the operating condition of the mirror switch (switch input signals) through the CAN (can communication) line. Then the switch input signals are sent to the front door ECU RH. Mirror adjustment is controlled by the front door ECU RH.

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1. CHECK DTC Use the Techstream to check if the CAN communication system is functioning normally. Result: RESULT REFERENCE CHART Result Proceed to CAN DTC is not output A CAN DTC is output B B: GO TO CAN COMMUNICATION SYSTEM (See «HOW TO PROCEED WITH TROUBLESHOOTING»(/lexus/ls/iv-2006-2012/remont/communication-devices/#can-communication) ) 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. D-SEAT SW DATA LIST REFERENCE CHART Tester Display Measurement Item/Range Normal Condition Diagnostic Note Mirror Selection SW (Right) 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 Adjustment Right 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 Adjustment Left 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 Adjustment 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 Adjustment Down 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 - OK: On screen, each item changes between ON and OFF according to above chart. NG: REPLACE OUTER MIRROR SWITCH ASSEMBLY (See «REMOVAL» ) OK: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (POWER MIRROR CONTROL FUNCTION) Select the Active Test, use the Techstream to generate a control command, and then check the power mirror control function. Passenger Door ACTIVE TEST REFERENCE CHART Tester Display Test Part Control Range Mirror Up/Down Mirror vertical operation UP/DOWN Mirror Right/Left Mirror horizontal operation RIGHT/LEFT Result RESULT REFERENCE CHART Result Proceed to Outer rear view mirror RH does not operate normally A Outer rear view mirror RH operates normally B B: REPLACE OUTER MIRROR SWITCH ASSEMBLY (See «REMOVAL» ) A: Go to next step
4. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH (LEFT/RIGHT MOTOR, UP/DOWN MOTOR) Remove the mirror RH (see «REMOVAL» ). Apply battery voltage and check the operation of the power mirror. OK VOLTAGE REFERENCE CHART Measurement Condition Specified Condition Battery positive (+) --> Terminal 1 (RMVR) Battery negative (-) --> Terminal 10 (RM+R) Turns upward (A) Battery negative (-) --> Terminal 1 (RMVR) Battery positive (+) --> Terminal 10 (RM+R) Turns downward (B) Battery positive (+) --> Terminal 9 (RMHR) Battery negative (-) --> Terminal 10 (RM+R) Turns left (C) Battery negative (-) --> Terminal 9 (RMHR) Battery positive (+) --> Terminal 10 (RM+R) Turns right (D) NG: REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH (See «REMOVAL» ) OK: REPLACE FRONT DOOR ECU RH (See «REMOVAL» )

The mirror heater operates when the following conditions are met: 1) the air conditioning amplifier sends a rear defogger switch signal through the CAN (can communication) line to the front door ECU LH and RH, and 2) the defogger operates.

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1. CHECK DTC Use the Techstream to check if the CAN communication system is functioning normally. Result: RESULT REFERENCE CHART Result Proceed to CAN DTC is not output A CAN DTC is output B B: GO TO CAN COMMUNICATION SYSTEM (See «HOW TO PROCEED WITH TROUBLESHOOTING»(/lexus/ls/iv-2006-2012/remont/communication-devices/#can-communication) ) A: Go to next step
2. CHECK DEFOGGER SYSTEM Check that the defogger operates normally. OK: Defogger operates normally. NG: GO TO WINDOW DEFOGGER SYSTEM (See «SYSTEM DESCRIPTION» ) OK: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (MIRROR HEATER FUNCTION) Select the Active Test, use the Techstream to generate a control command, and then check the mirror heater function. Driver Door ACTIVE TEST REFERENCE CHART Tester Display Test Part Control Range Mirror Heater Mirror heater operation OFF/ON Passenger Door ACTIVE TEST REFERENCE CHART Tester Display Test Part Control Range Mirror Heater Mirror heater operation OFF/ON Result (Driver Side): RESULT REFERENCE CHART Result Proceed to Outer rear view mirror LH does not operate normally A Outer rear view mirror LH operates normally B Result (Passenger Side): RESULT REFERENCE CHART Result Proceed to Outer rear view mirror RH does not operate normally C Outer rear view mirror RH operates normally D B: REPLACE AIR CONDITIONING AMPLIFIER (See «REMOVAL» ) C: Go to step 5 D: REPLACE AIR CONDITIONING AMPLIFIER (See «REMOVAL» ) A: Go to next step
4. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH Remove the mirror LH (see «REMOVAL» ). Check the operation of the mirror heater. Measure the resistance according to the value(s) in the table below. Standard resistance STANDARD RESISTANCE REFERENCE CHART Tester Connection Condition Specified Condition 4 (HTR+) - 12 (HTR-) 25°C (75°F) 3.0 to 4.0 ohms Apply battery voltage and check the mirror heater operation. OK VOLTAGE REFERENCE CHART Measurement Condition Specified Condition Battery positive (+) --> Terminal 4 (HTR+) Battery negative (-) --> Terminal 12 (HTR-) Mirror becomes warm HINT: It will take a short time for the mirror to become warm. NG: REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH (See «REMOVAL» ) OK: REPLACE FRONT DOOR ECU LH (See «REMOVAL» )
5. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH Remove the mirror RH (see «REMOVAL» ). Check the operation of the mirror heater. Measure the resistance according to the value(s) in the table below. Standard resistance STANDARD RESISTANCE REFERENCE CHART Tester Connection Condition Specified Condition 4 (HTR+) - 12 (HTR-) 25°C (75°F) 3.0 to 4.0 ohms Apply battery voltage and check the mirror heater operation. OK VOLTAGE REFERENCE CHART Measurement Condition Specified Condition Battery positive (+) --> Terminal 4 (HTR+) Battery negative (-) --> Terminal 12 (HTR-) Mirror becomes warm HINT: It will take a short time for the mirror to become warm. NG: REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH (See «REMOVAL» ) OK: REPLACE FRONT DOOR ECU RH (See «REMOVAL» )

This circuit detects the conditions of the mirror retract switch.

The outer mirror switch sends information about the operating condition of the mirror retract switch (switch input signals) through the CAN (can communication) line. Then the switch input signals are sent to the front door ECU LH and RH.

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1. CHECK DTC Use the Techstream to check if the CAN communication system is functioning normally. Result: RESULT REFERENCE CHART Result Proceed to CAN DTC is not output A CAN DTC is output B B: GO TO CAN COMMUNICATION SYSTEM (See «HOW TO PROCEED WITH TROUBLESHOOTING»(/lexus/ls/iv-2006-2012/remont/communication-devices/#can-communication) ) A: Go to next step
2. READ VALUE USING TECHSTREAM (MIRROR RETRACT SWITCH) Check the Data List for proper functioning of the mirror retract switch. D-SEAT SW DATA LIST REFERENCE CHART Tester Display Measurement Item/Range Normal Condition Diagnostic Note Mirror Close Switch Mirror retract switch signal/ON or OFF ON: Switch is ON (retracting) OFF: Switch is OFF - Mirror Open Switch Mirror retract switch signal/ON or OFF ON: Switch is ON (returning) OFF: Switch is OFF - OK: On screen, each item changes between ON and OFF according to above chart. NG: REPLACE OUTER MIRROR SWITCH ASSEMBLY (See «REMOVAL» ) OK: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (MIRROR RETRACT FUNCTION) Select the Active Test, use the Techstream to generate a control command, and then check the mirror retract function. Driver Door ACTIVE TEST REFERENCE CHART Tester Display Test Part Control Range Mirror Fold/Return Mirror retract operation FOLD/RETURN Passenger Door ACTIVE TEST REFERENCE CHART Tester Display Test Part Control Range Mirror Fold/Return Mirror retract operation FOLD/RETURN Result (Driver Side): RESULT REFERENCE CHART Result Proceed to Outer rear view mirror LH does not operate normally A Outer rear view mirror LH operates normally B Result (Passenger Side): RESULT REFERENCE CHART Result Proceed to Outer rear view mirror RH does not operate normally C Outer rear view mirror RH operates normally D B: REPLACE OUTER MIRROR SWITCH ASSEMBLY (See «REMOVAL» ) C: Go to step 5 D: REPLACE OUTER MIRROR SWITCH ASSEMBLY (See «REMOVAL» ) A: Go to next step
4. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH Remove the mirror LH (see «REMOVAL» ). 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 REFERENCE CHART 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 REAR VIEW MIRROR ASSEMBLY LH (See «REMOVAL» ) OK: REPLACE FRONT DOOR ECU LH (See «REMOVAL» )
5. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH Remove the mirror RH (see «REMOVAL» ). 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 REFERENCE CHART 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 REAR VIEW MIRROR ASSEMBLY RH (See «REMOVAL» ) OK: REPLACE FRONT DOOR ECU RH (See «REMOVAL» )

The outer rear view mirror assembly has a mirror position sensor. The seat ECUs send instructions to the driver side and front passenger side door ECUs. Then the door ECUs receive mirror information from the mirror position sensors, and memorize the mirror positions.

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

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1. CHECK DTC Use the Techstream to check if the CAN communication system is functioning normally. Result: RESULT REFERENCE CHART Result Proceed to CAN DTC is not output A CAN DTC is output B B: GO TO CAN COMMUNICATION SYSTEM (See «HOW TO PROCEED WITH TROUBLESHOOTING»(/lexus/ls/iv-2006-2012/remont/communication-devices/#can-communication) ) A: Go to next step
2. CHECK POWER MIRROR CONTROL FUNCTION Check that the mirror surface positions of the outer rear view mirror LH and RH can be moved using the outer mirror switch. OK: Mirror surface positions of the outer rear view mirror LH and RH can be moved using the outer mirror switch. NG: REPLACE OUTER MIRROR SWITCH ASSEMBLY (See «REMOVAL» ) OK: Go to next step
3. CHECK SEAT MEMORY SWITCH FUNCTION (MIRROR MEMORY FUNCTION) Check that the outer rear view mirror LH and RH positions can be memorized using the seat memory switch. OK: Outer rear view mirror LH and RH positions can be memorized using seat memory switch. NG: GO TO FRONT POWER SEAT CONTROL SYSTEM (See «HOW TO PROCEED WITH TROUBLESHOOTING»(/lexus/ls/iv-2006-2012/remont/seats/#seat) ) OK: Go to next step
4. READ VALUE USING TECHSTREAM (MIRROR POSITION SENSOR) Check the Data List for proper functioning of the mirror position sensor. Driver Door DATA LIST REFERENCE CHART Tester Display Measurement Item/Display Normal Condition Diagnostic Note Mirror Vertical Sensor Voltage Driver side mirror vertical sensor voltage/MIN: 0, MAX: 255 Within range from 0 to 255 - Mirror Horizontal Sensor Voltage Driver side mirror horizontal sensor voltage/MIN: 0, MAX: 255 Within range from 0 to 255 - Passenger Door DATA LIST REFERENCE CHART Tester Display Measurement Item/Display Normal Condition Diagnostic Note Mirror Vertical Sensor Voltage Driver side mirror vertical sensor voltage/MIN: 0, MAX: 255 Within range from 0 to 255 - Mirror Horizontal Sensor Voltage Driver side mirror horizontal sensor voltage/MIN: 0, MAX: 255 Within range from 0 to 255 - OK: Output voltage is as shown in table above. Result RESULT REFERENCE CHART Result Proceed to Driver side mirror does not operate normally A Driver side mirror operates normally B Passenger side mirror does not operate normally C Passenger side mirror operates normally D B: REPLACE FRONT DOOR ECU LH (See «REMOVAL» ) C: Go to step 6 D: REPLACE FRONT DOOR ECU RH (See «REMOVAL» ) A: Go to next step
5. CHECK FRONT DOOR ECU LH Measure the voltage according to the value in the table below. Standard voltage STANDARD VOLTAGE REFERENCE CHART Tester Connection Switch Condition Specified Condition z10-5 (RVC) - z10-14 (RE1) Engine Switch on (IG) 3.5 to 5.5 V Measure the resistance according to the value in the table below. Standard resistance STANDARD RESISTANCE REFERENCE CHART Tester Connection Condition Specified Condition z10-14 (RE1) - Body ground Always Below 1 ohms NG: REPLACE FRONT DOOR ECU LH (See «REMOVAL» ) OK: REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH (See «REMOVAL» )
6. CHECK FRONT DOOR ECU RH Measure the voltage according to the values in the table below. Standard voltage STANDARD VOLTAGE REFERENCE CHART Tester Connection Switch Condition Specified Condition z9-5 (RVC) - z9-14 (RE1) Engine Switch on (IG) 3.5 to 5.5 V Measure the resistance according to the value in the table below. Standard resistance STANDARD RESISTANCE REFERENCE CHART Tester Connection Condition Specified Condition z9-14 (RE1) - Body ground Always Below 1 ohms NG: REPLACE FRONT DOOR ECU RH (See «REMOVAL» ) OK: REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH (See «REMOVAL» )

When the reverse signal is sent from the TCM through the CAN (can communication) line to the front door ECU LH and RH, the front door ECU LH and RH activate the outer rear view mirror 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).

See also:
• HOW TO PROCEED WITH TROUBLESHOOTING
• HOW TO PROCEED WITH TROUBLESHOOTING