Power Mirror Control (Diagnostics & Symptom Tests): Overview Lexus GX J150

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COMMUNICATION TABLE

1. *1: w/ Navigation System
2. *2: w/o Navigation System

SYSTEM DESCRIPTION

1. POWER MIRROR CONTROL SYSTEM DESCRIPTION This system has the following functions: electric retract function*1, automatic glare-resistant electrochromic (EC) mirror function*2, reverse shift-linked function, electrical remote control function, memory function and mirror heater function. *1: w/ Retract Mirror *2: w/ EC Mirror
2. FUNCTION OF MAIN COMPONENT Component Function Vertical mirror motor Receives a signal from the outer mirror control ECU assembly and adjusts the mirror surface position vertically. Horizontal mirror motor Receives a signal from the outer mirror control ECU assembly and adjusts the mirror surface position horizontally. Power retract mirror motor*1 Receives a signal from the outer mirror control ECU assembly, and retracts and returns the outer rear view mirrors. Mirror heater Receives a signal from the outer mirror control ECU assembly and operates mirror heater EC mirror cell*2 Varies reflection rate of the mirror through function of EC elements. Mirror retract switch*1 Retracts and returns the outer rear view mirrors. Mirror retract and return signals are sent to each outer mirror control ECU assemblies from the main body ECU (multiplex network body ECU). Mirror select switch Consists of R and L switches. One must be chosen to operate the outer mirror switch assembly. Mirror adjust switch Mirror R and L signals are sent to each outer mirror control ECU assemblies from the mirror select switch. After selecting the R or L switch, the right, left, up and down control switches can be operated to change the angle of the mirror. Mirror position sensor Detects the mirror surface position. This data is detected by the outer mirror control ECU assembly. Seat memory switch When the seat memory M1 or M2 switch are pressed while the SET switch is being pressed, or M1 or M2 switch is pressed within 3 seconds after the SET switch being pressed, a signal is input to the outer mirror control ECU assembly LH, which records the mirror surface position. When the seat memory switch is pressed, a signal is input to the outer mirror control ECU assembly LH and sent to main body ECU (multiplex network body ECU), which changes the mirror surface position to the recorded position. Outer mirror control ECU assembly Operates each mirror motor based on signals from the outer mirror retract switch*1, mirror select switch and mirror adjust switch. Based on information from the mirror position sensor, 2 different mirror surface positions can be stored. By operating a seat memory switch, the mirror surface moves to the stored position. *1: w/ Retract Mirror *2: w/ EC Mirror
3. SYSTEM OPERATION The remote control mirror has the following features. Function Outline Power retract mirror function*1 Retracts and returns the outer rear view mirrors when the outer mirror retract switch is pressed. Reverse shift-linked function of mirrors Directs the mirror surface downward to improve visibility when driving in reverse and all the conditions below are met: The engine switch is on (IG). Shift lever is moved to R. The mirror select switch is in the R or L position. Electrical remote control mirror function When the outer mirror switch assembly is operated, this function moves the mirror surface vertically or horizontally to enable the driver to attain an optimal mirror angle. Setting the mirror select switch to the R position operates the right mirror, and setting it to the L position operates the left mirror. Memory and reactivation function When the SET switch and seat memory M1 or M2 switch are pressed simultaneously, the mirror position is recorded. Then, when the seat memory M1 or M2 switch is pressed, the mirror position changes according to memory. Automatic glare-resistant EC mirror function*2 Reduces glare/reflection in the mirror during nighttime driving for safe driving conditions. Glare/reflection from vehicle headlights behind could blind driver and cause dangerous driving conditions. Mirror heater function Automatically turns on mirror heater when the mirror heater switch is turned on. The rear window defogger and mirror heaters automatically turn off after 15 min. For vehicles with an air conditioning system, there is a timer extension function which can operate the mirror heater function for up to an additional 255 minutes. *1: w/ Retract Mirror *2: w/ EC Mirror

When the mirror adjust switch is operated, the main body ECU (multiplex network body ECU) detects the switch operation and sends the mirror adjust switch signal to the outer mirror control ECU assembly LH via CAN communication. Upon receiving the signal, the outer mirror control ECU assembly LH operates the vertical and horizontal mirror motors, which are built into the outer rear view mirror assembly LH, to adjust the mirror surface position.

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1. CHECK CAN COMMUNICATION SYSTEM Check if a CAN communication DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-524289-S01570922952013012800000) . RESULT Result Proceed to DTC is not output A DTC is output B B --> See step 7 A: Go to next step
2. READ VALUE USING TECHSTREAM (OUTER MIRROR SWITCH) Using the Techstream, read the Data List. Refer to «DATA LIST / ACTIVE TEST»(ref-524369-S29867334982013012800000) . MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Mirror Selection SW (L) Mirror select switch signal for LH mirror / ON or OFF ON: Mirror select switch in L position OFF: Mirror select switch off or in R position - Mirror Position SW (R) Mirror adjust switch signal (Right) / ON or OFF ON: Mirror adjust switch pressed right OFF: Mirror adjust switch not pressed right Check with the mirror select switch in the L position. Mirror Position SW (L) Mirror adjust switch signal (Left) / ON or OFF ON: Mirror adjust switch pressed left OFF: Mirror adjust switch not pressed left Check with the mirror select switch in the L position. Mirror Position SW (Up) Mirror adjust switch signal (Up) / ON or OFF ON: Mirror adjust switch pressed up OFF: Mirror adjust switch not pressed up Check with the mirror select switch in the L position. Mirror Position SW (Dwn) Mirror adjust switch signal (Down) / ON or OFF ON: Mirror adjust switch pressed down OFF: Mirror adjust switch not pressed down Check with the mirror select switch in the L position. OK On the Techstream screen, each item changes between ON and OFF according to above chart. NG --> See step 5 OK: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (MIRROR CONTROL FUNCTION) Select the Active Test, use the Techstream to generate a control command, and then check the mirror control function. Refer to «DATA LIST / ACTIVE TEST»(ref-524369-S29867334982013012800000) . MIRROR L Tester Display Test Part Control Range Diagnostic Note Mirror Up/Down Mirror vertical operation Up / Down - Mirror Right/Left Mirror horizontal operation Right / Left - OK Mirror operates normally. NG --> See step 4 OK --> See step 8
4. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH Remove the outer rear view mirror assembly LH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000) . Apply battery voltage and check the operation of the outer rear view mirror assembly LH. OK Measurement Condition Specified Condition Battery positive (+) --> Terminal z3-1 (LMVR) Battery negative (-) --> Terminal z3-10 (LM+R) Turns upward Battery negative (-) --> Terminal z3-1 (LMVR) Battery positive (+) --> Terminal z3-10 (LM+R) Turns downward Battery positive (+) --> Terminal z3-9 (LMHR) Battery negative (-) --> Terminal z3-10 (LM+R) Turns left Battery negative (-) --> Terminal z3-9 (LMHR) Battery positive (+) --> Terminal z3-10 (LM+R) Turns right NG --> See step 10 OK --> See step 9
5. INSPECT OUTER MIRROR SWITCH ASSEMBLY Remove the outer mirror switch assembly. Refer to «REMOVAL»(ref-524351-S33907263862013012800000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 13 (M+) - 12 (E) Mirror select switch L Mirror adjust switch pressed up 90 to 110 ohms Mirror select switch L Mirror adjust switch pressed down 437 to 503 ohms Mirror select switch L Mirror adjust switch pressed left 744 to 856 ohms Mirror select switch L Mirror adjust switch pressed right 225 to 275 ohms 14 (MSW) - 12 (E) Mirror select switch L 90 to 110 ohms Mirror select switch off 10 kohms or higher TEXT IN ILLUSTRATION *1 Mirror Adjust Switch *2 Mirror Select Switch NG --> See step 11 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - OUTER MIRROR SWITCH) Disconnect the G46 ECU connector. Disconnect the G6 switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition G46-15 (MIRE) - G6-12 (E) Always Below 1 ohms G46-13 (MIRB) - G6-13 (M+) Always Below 1 ohms G46-14 (MIRS) - G6-14 (MSW) Always Below 1 ohms G46-15 (MIRE) - Body ground Always 10 kohms or higher G46-13 (MIRB) - Body ground Always 10 kohms or higher G46-14 (MIRS) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
7. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-524289-S06634024762013012800000)
8. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH. Refer to «REMOVAL»(ref-524351-S28709186962013012800000)
9. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH. Refer to «REMOVAL»(ref-524351-S28709186962013012800000)
10. REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000)
11. REPLACE OUTER MIRROR SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-524351-S33907263862013012800000)
12. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL»(ref-524305-S41918141882013012800000)

When the mirror adjust switch is operated, the main body ECU (multiplex network body ECU) detects the switch operation and sends the mirror adjust switch signal to the outer mirror control ECU assembly RH via CAN communication. Upon receiving the signal, the outer mirror control ECU assembly RH operates the vertical and horizontal mirror motors, which are built into the outer rear view mirror assembly RH, to adjust the mirror surface position.

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1. CHECK CAN COMMUNICATION SYSTEM Check if a CAN communication DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-524289-S01570922952013012800000) . RESULT Result Proceed to DTC is not output A DTC is output B B --> See step 8 A: Go to next step
2. READ VALUE USING TECHSTREAM (OUTER MIRROR SWITCH) Using the Techstream, read the Data List. Refer to «DATA LIST / ACTIVE TEST»(ref-524369-S29867334982013012800000) . MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Mirror Selection SW (R) Mirror select switch signal for RH mirror / ON or OFF ON: Mirror select switch in R position OFF: Mirror select switch off or in L position - Mirror Position SW (R) Mirror adjust switch signal (Right) / ON or OFF ON: Mirror adjust switch pressed right OFF: Mirror adjust switch not pressed right Check with the mirror select switch in the R position Mirror Position SW (L) Mirror adjust switch signal (Left) / ON or OFF ON: Mirror adjust switch pressed left OFF: Mirror adjust switch not pressed left Check with the mirror select switch in the R position Mirror Position SW (Up) Mirror adjust switch signal (Up) / ON or OFF ON: Mirror adjust switch pressed up OFF: Mirror adjust switch not pressed up Check with the mirror select switch in the R position Mirror Position SW (Dwn) Mirror adjust switch signal (Down) / ON or OFF ON: Mirror adjust switch pressed down OFF: Mirror adjust switch not pressed down Check with the mirror select switch in the R position OK On the Techstream screen, each item changes between ON and OFF according to above chart. NG --> See step 5 OK: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (MIRROR CONTROL FUNCTION) Select the Active Test, use the Techstream to generate a control command, and then check the mirror control function. Refer to «DATA LIST / ACTIVE TEST»(ref-524369-S29867334982013012800000) . MIRROR R Tester Display Test Part Control Range Diagnostic Note Mirror Up/Down Mirror vertical operation Up / Down - Mirror Right/Left Mirror horizontal operation Right / Left - OK Mirror operates normally. NG --> See step 4 OK --> See step 9
4. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH Remove the outer rear view mirror assembly RH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000) . Apply battery voltage and check the operation of the outer rear view mirror assembly RH. OK Measurement Condition Specified Condition Battery positive (+) --> Terminal z2-1 (RMVR) Battery negative (-) --> Terminal z2-10 (RM+R) Turns upward Battery negative (-) --> Terminal z2-1 (RMVR) Battery positive (+) --> Terminal z2-10 (RM+R) Turns downward Battery positive (+) --> Terminal z2-9 (RMHR) Battery negative (-) --> Terminal z2-10 (RM+R) Turns left Battery negative (-) --> Terminal z2-9 (RMHR) Battery positive (+) --> Terminal z2-10 (RM+R) Turns right NG --> See step 10 OK --> See step 7
5. INSPECT OUTER MIRROR SWITCH ASSEMBLY Remove the outer mirror switch assembly. Refer to «REMOVAL»(ref-524351-S33907263862013012800000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 13 (M+) - 12 (E) Mirror select switch R Mirror adjust switch pressed up 90 to 110 ohms Mirror select switch R Mirror adjust switch pressed down 437 to 503 ohms Mirror select switch R Mirror adjust switch pressed left 744 to 856 ohms Mirror select switch R Mirror adjust switch pressed right 225 to 275 ohms 14 (MSW) - 12 (E) Mirror select switch R Below 10 ohms Mirror select switch off 10 kohms or higher TEXT IN ILLUSTRATION *1 Mirror Adjust Switch *2 Mirror Select Switch NG --> See step 11 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - OUTER MIRROR SWITCH) Disconnect the G46 ECU connector. Disconnect the G6 switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition G46-15 (MIRE) - G6-12 (E) Always Below 1 ohms G46-13 (MIRB) - G6-13 (M+) Always Below 1 ohms G46-14 (MIRS) - G6-14 (MSW) Always Below 1 ohms G46-15 (MIRE) - Body ground Always 10 kohms or higher G46-13 (MIRB) - Body ground Always 10 kohms or higher G46-14 (MIRS) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
7. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH. Refer to «REMOVAL»(ref-524351-S28709186962013012800000)
8. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-524289-S06634024762013012800000)
9. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH. Refer to «REMOVAL»(ref-524351-S28709186962013012800000)
10. REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000)
11. REPLACE OUTER MIRROR SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-524351-S33907263862013012800000)
12. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL»(ref-524305-S41918141882013012800000)

The main body ECU (multiplex network body ECU) detects the mirror adjust switch status and sends the signal to the outer mirror control ECU assembly via CAN communication. Upon receiving the signal, each outer mirror control ECU assembly operates the vertical and horizontal mirror motors to adjust the mirror surface position.

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DESCRIPTION

When the mirror heater switch is operated, the mirror heater signal is sent to the air conditioning amplifier assembly and then to each outer mirror control ECU assembly via CAN communication. Based on the signal, each outer mirror control ECU assembly operates the mirror heater.

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1. CHECK CAN COMMUNICATION SYSTEM Check if a CAN communication DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-524289-S01570922952013012800000) . RESULT Result Proceed to DTC is not output A DTC is output B B --> See step 12 A: Go to next step
2. CHECK WINDOW DEFOGGER SYSTEM Check window defogger system operation. Refer to «SYSTEM DESCRIPTION»(ref-524396-S12544959512013012800000) . OK Window defogger system is normal. NG --> See step 6 OK: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (MIRROR HEATER) Select the Active Test, use the Techstream to generate a control command, and then check the mirror heater function. Refer to «DATA LIST / ACTIVE TEST»(ref-524369-S29867334982013012800000) . MIRROR L / MIRROR R Tester Display Test Part Control Range Diagnostic Note Mirror Heater Mirror heater operation ON / OFF - OK Mirror heater operates normally. RESULT Result Proceed to Mirror heater operation of both mirrors is normal A Mirror heater operation of LH side mirror is not normal B Mirror heater operation of RH side mirror is not normal C B --> See step 4 C --> See step 5 A --> See step 7
4. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH Remove the outer rear view mirror assembly LH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z3-4 (HTR+) - z3-12 (HTR-) 25°C (77°F) 2.4 to 4.4 ohms NG --> See step 10 OK --> See step 11
5. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH Remove the outer rear view mirror assembly RH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z2-4 (HTR+) - z2-12 (HTR-) 25°C (77°F) 2.4 to 4.4 ohms NG --> See step 8 OK --> See step 9
6. GO TO WINDOW DEFOGGER SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-524396-S21320924242013012800000)
7. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-524260-S29534205702013012800000)
8. REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000)
9. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH. Refer to «REMOVAL»(ref-524351-S28709186962013012800000)
10. REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000)
11. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH. Refer to «REMOVAL»(ref-524351-S28709186962013012800000)
12. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-524289-S06634024762013012800000)

The main body ECU receives the retract switch signal from the outer mirror switch assembly. The main body ECU then sends the mirror retract/return signal to each outer mirror control ECU via LIN communication. Based on the signal, each outer mirror control ECU retracts or returns the outer rear view mirror assembly.

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1. CHECK CAN COMMUNICATION SYSTEM Check if a CAN communication DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-524289-S01570922952013012800000) . RESULT Result Proceed to DTC is not output A DTC is output B B --> See step 14 A: Go to next step
2. READ VALUE USING TECHSTREAM (OUTER MIRROR RETRACT SWITCH) Using the Techstream, read the Data List. Refer to «DATA LIST / ACTIVE TEST»(ref-524369-S29867334982013012800000) . MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Outer Mirror Fold SW Mirror retract switch signal / ON or OFF ON: Retract switch in retract position OFF: Retract switch in driving position - OK On Techstream screen, each item changes between ON and OFF according to above chart. NG --> See step 6 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. Refer to «DATA LIST / ACTIVE TEST»(ref-524369-S29867334982013012800000) . MIRROR L / MIRROR R Tester Display Test Part Control Range Diagnostic Note Mirror Fold/Return Mirror retract operation Fold / Return - OK Mirror operates normally. RESULT Result Proceed to Outer rear view mirror LH does not operate normally A Outer rear view mirror LH operates normally B Outer rear view mirror RH does not operate normally C Outer rear view mirror RH operates normally D B --> See step 10 C --> See step 5 D --> See step 12 A: Go to next step
4. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH Remove the outer rear view mirror assembly LH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000) . When checking each mirror position, set the mirror position by hand. Apply battery voltage and check the mirror 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 z3-3 (MR+) Battery negative (-) --> Terminal z3-11 (MR-) Forward position (A) Moves from (A) to retracted position (E) Battery negative (-) --> Terminal z3-3 (MR+) Battery positive (+) --> Terminal z3-11 (MR-) Forward position (A) Does not move Battery positive (+) --> Terminal z3-3 (MR+) Battery negative (-) --> Terminal z3-11 (MR-) Between forward position (A) and driving position (C) Moves from (B) to retracted position (E) Battery negative (-) --> Terminal z3-3 (MR+) Battery positive (+) --> Terminal z3-11 (MR-) Between forward position (A) and driving position (C) Moves from (B) to forward position (A) Battery positive (+) --> Terminal z3-3 (MR+) Battery negative (-) --> Terminal z3-11 (MR-) Driving position (C) Moves from (C) to retracted position (E) Battery negative (-) --> Terminal z3-3 (MR+) Battery positive (+) --> Terminal z3-11 (MR-) Driving position (C) Does not move Battery positive (+) --> Terminal z3-3 (MR+) Battery negative (-) --> Terminal z3-11 (MR-) Between driving position (C) and retracted position (E) Moves from (D) to retracted position (E) Battery negative (-) --> Terminal z3-3 (MR+) Battery positive (+) --> Terminal z3-11 (MR-) Between driving position (C) and retracted position (E) Moves from (D) to driving position (C) Battery positive (+) --> Terminal z3-3 (MR+) Battery negative (-) --> Terminal z3-11 (MR-) Retracted position (E) Does not move Battery negative (-) --> Terminal z3-3 (MR+) Battery positive (+) --> Terminal z3-11 (MR-) Retracted position (E) Moves from (E) to driving position (C) NG --> See step 11 OK --> See step 10
5. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH Remove the outer rear view mirror assembly RH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000) . When checking each mirror position, set the mirror position by hand. Apply battery voltage and check the mirror 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 z2-3 (MR+) Battery negative (-) --> Terminal z2-11 (MR-) Forward position (A) Moves from (A) to retracted position (E) Battery negative (-) --> Terminal z2-3 (MR+) Battery positive (+) --> Terminal z2-11 (MR-) Forward position (A) Does not move Battery positive (+) --> Terminal z2-3 (MR+) Battery negative (-) --> Terminal z2-11 (MR-) Between forward position (A) and driving position (C) Moves from (B) to retracted position (E) Battery negative (-) --> Terminal z2-3 (MR+) Battery positive (+) --> Terminal z2-11 (MR-) Between forward position (A) and driving position (C) Moves from (B) to forward position (A) Battery positive (+) --> Terminal z2-3 (MR+) Battery negative (-) --> Terminal z2-11 (MR-) Driving position (C) Moves from (C) to retracted position (E) Battery negative (-) --> Terminal z2-3 (MR+) Battery positive (+) --> Terminal z2-11 (MR-) Driving position (C) Does not move Battery positive (+) --> Terminal z2-3 (MR+) Battery negative (-) --> Terminal z2-11 (MR-) Between driving position (C) and retracted position (E) Moves from (D) to retracted position (E) Battery negative (-) --> Terminal z2-3 (MR+) Battery positive (+) --> Terminal z2-11 (MR-) Between driving position (C) and retracted position (E) Moves from (D) to driving position (C) Battery positive (+) --> Terminal z2-3 (MR+) Battery negative (-) --> Terminal z2-11 (MR-) Retracted position (E) Does not move Battery negative (-) --> Terminal z2-3 (MR+) Battery positive (+) --> Terminal z2-11 (MR-) Retracted position (E) Moves from (E) to driving position (C) NG --> See step 9 OK --> See step 12
6. INSPECT OUTER MIRROR SWITCH ASSEMBLY Remove the outer mirror switch assembly. Refer to «REMOVAL»(ref-524351-S33907263862013012800000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 8 (MR) - 10 (E2) Retract switch in retract position Below 10 ohms Retract switch in driving position 10 kohms or higher TEXT IN ILLUSTRATION *1 Mirror Retract Switch NG --> See step 13 OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - OUTER MIRROR SWITCH) Disconnect the G46 ECU connector. Disconnect the G6 switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition G46-28 (RET) - G6-8 (MR) Always Below 1 ohms G6-10 (E2) - Body ground Always Below 1 ohms G46-28 (RET) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
8. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL»(ref-524305-S41918141882013012800000)
9. REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000)
10. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH. Refer to «REMOVAL»(ref-524351-S28709186962013012800000)
11. REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000)
12. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH. Refer to «REMOVAL»(ref-524351-S28709186962013012800000)
13. REPLACE OUTER MIRROR SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-524351-S33907263862013012800000)
14. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-524289-S06634024762013012800000)

If the M1 or M2 seat memory switch is pressed, the outer mirror control ECU assembly LH detects the switch operation and sends the seat memory switch signal to the main body ECU (multiplex network body ECU) via CAN communication. Upon receiving the seat memory switch signal, the main body ECU (multiplex network body ECU) sends the memory request signal to each outer mirror control ECU assembly via CAN communication. When receiving this signal, each outer mirror control ECU assembly stores the mirror surface position based on information from the mirror position sensor, which is built into the outer rear view mirror assembly.

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1. CHECK CAN COMMUNICATION SYSTEM Check if a CAN communication DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-524289-S01570922952013012800000) . RESULT Result Proceed to DTC is not output A DTC is output B B --> See step 7 A: Go to next step
2. READ VALUE USING TECHSTREAM (SEAT MEMORY SWITCH) Using the Techstream, read the Data List. Refer to «DATA LIST / ACTIVE TEST»(ref-524369-S29867334982013012800000) . MIRROR L Tester Display Measurement Item/Range Normal Condition Diagnostic Note Seat Memory Switch1 Seat memory switch M1 signal/ON or OFF ON: Seat memory switch M1 on OFF: Seat memory switch M1 off - Seat Memory Switch2 Seat memory switch M2 signal/ON or OFF ON: Seat memory switch M2 on OFF: Seat memory switch M2 off - Seat Memory Set SW Seat memory switch SET signal/ON or OFF ON: Seat memory switch SET on OFF: Seat memory switch SET off - OK On Techstream screen, each item changes between ON and OFF according to above chart. NG --> See step 5 OK: Go to next step
3. CHECK SEAT MEMORY SWITCH FUNCTION (SEAT POSITION MEMORY FUNCTION) Perform a seat memory operation properly. Refer to «OPERATION CHECK»(ref-524119-S14571906492013012800000) . When any seat memory switch (M1 or M2 switch) is pressed, check that the driver side seat moves to the memorized position. OK Driver side seat moves to memorized position. NG --> See step 8 OK: Go to next step
4. READ VALUE USING TECHSTREAM (MIRROR POSITION MEMORY) Using the Techstream, read the Data List. Refer to «DATA LIST / ACTIVE TEST»(ref-524369-S29867334982013012800000) . MIRROR L / MIRROR R Tester Display Measurement Item/Range Normal Condition Diagnostic Note Mirror Memory No. 1 Mirror position memorized in memory switch M1/OFF or ON ON: Memorized OFF: Not memorized - Mirror Memory No. 2 Mirror position memorized in memory switch M2/OFF or ON ON: Memorized OFF: Not memorized - OK "ON" is displayed on Techstream. RESULT Result Proceed to OK A NG (for Driver Side) B NG (for Passenger Side) C B --> See step 10 C --> See step 11 A --> See step 9
5. INSPECT SEAT MEMORY SWITCH Remove the seat memory switch. Refer to «REMOVAL»(ref-524286-S22538824792013012800000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 3 (1) - 1 (E) Seat memory switch M1 pressed Below 1 ohms 4 (2) - 1 (E) Seat memory switch M2 pressed Below 1 ohms 2 (MMRY) - 1 (E) Seat memory switch SET pressed Below 1 ohms NG --> See step 12 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU - SEAT MEMORY SWITCH) Disconnect the K8 ECU connector. Disconnect the k2 switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition K8-2 (M1) - k2-3 (1) Always Below 1 ohms K8-3 (M2) - k2-4 (2) Always Below 1 ohms K8-1 (MM) - k2-2 (MMRY) Always Below 1 ohms K8-13 (MSWE) - k2-1 (E) Always Below 1 ohms K8-2 (M1) - Body ground Always 10 kohms or higher K8-3 (M2) - Body ground Always 10 kohms or higher K8-1 (MM) - Body ground Always 10 kohms or higher K8-13 (MSWE) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
7. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-524289-S06634024762013012800000)
8. GO TO FRONT POWER SEAT CONTROL SYSTEM. Refer to «PROBLEM SYMPTOMS TABLE»(ref-524119-S15729946842013012800000)
9. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL»(ref-524305-S41918141882013012800000)
10. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH. Refer to «REMOVAL»(ref-524351-S28709186962013012800000)
11. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH. Refer to «REMOVAL»(ref-524351-S28709186962013012800000)
12. REPLACE SEAT MEMORY SWITCH. Refer to «REMOVAL»(ref-524286-S22538824792013012800000)

If the M1 or M2 seat memory switch is pressed, the outer mirror control ECU assembly LH detects the seat memory switch status and sends the switch signal to the main body ECU (multiplex network body ECU) via CAN communication. The main body ECU (multiplex network body ECU) sends back restore signals to each outer mirror control ECU assembly via CAN communication. When receiving the restore signals, each outer mirror control ECU assembly operates the vertical and horizontal mirror motors, which are built into the outer rear view mirror assembly, to adjust the mirror surface to the stored position.

Scheme 104

Scheme 105

Scheme 106

1. CHECK CAN COMMUNICATION SYSTEM Check if a CAN communication DTC is output. Refer to «DIAGNOSIS SYSTEM»(ref-524289-S01570922952013012800000) . RESULT Result Proceed to DTC is not output A DTC is output B B --> See step 8 A: Go to next step
2. CHECK POWER MIRROR CONTROL FUNCTION (ELECTRICAL REMOTE CONTROL MIRROR FUNCTION) Check the electrical remote control mirror function. Refer to «OPERATION CHECK»(ref-524369-S18131546712013012800000) . OK Electrical remote control mirror function is normal. NG --> See step 9 OK: Go to next step
3. CHECK SEAT MEMORY SWITCH FUNCTION (MIRROR MEMORY FUNCTION) Use the seat memory switch to record the mirror position. Refer to «OPERATION CHECK»(ref-524369-S18131546712013012800000) . Refer to the Data List for the mirror L and check that the memory operation is completed normally. OK Mirror position is recorded normally. NG --> See step 14 OK: Go to next step
4. CHECK SEAT MEMORY SWITCH FUNCTION (MIRROR RESTORING OPERATION) Check the mirror restoring operation. Refer to «OPERATION CHECK»(ref-524369-S18131546712013012800000) . RESULT Result Proceed to Both mirrors do not operate normally A Either mirror does not operate normally B B --> See step 5 A --> REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
5. READ VALUE USING TECHSTREAM (MIRROR POSITION SENSOR) Using the Techstream, read the Data List. Refer to «DATA LIST / ACTIVE TEST»(ref-524369-S29867334982013012800000) . MIRROR L / MIRROR R Tester Display Measurement Item/Range Normal Condition Diagnostic Note Mirror Vertical Sensor Vol Vertical mirror position/MIN: 0, MAX: 4.98 V Within range from 0 to 4.98 V - Mirror Horizontal Sensor Vol Horizontal mirror position/MIN: 0, MAX: 4.98 V Within range from 0 to 4.98 V - OK Output voltage is as shown in table above. RESULT 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 --> See step 12 C --> See step 7 D --> See step 10 A: Go to next step
6. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY LH Remove the outer mirror control ECU LH with its connectors still connected. Refer to «REMOVAL»(ref-524351-S28709186962013012800000) . Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition z3-5 (LVC) - z3-14 (LE1) Engine switch on (IG) 4.7 to 5.3 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z3-14 (LE1) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Component with harness connected (Outer Mirror Control ECU Assembly LH) NG --> See step 12 OK --> See step 13
7. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY RH Remove the outer mirror control ECU RH with its connectors still connected. Refer to «REMOVAL»(ref-524351-S28709186962013012800000) . Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition z2-5 (RVC) - z2-14 (RE1) Engine switch on (IG) 4.7 to 5.3 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z2-14 (RE1) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Component with harness connected (Outer Mirror Control ECU Assembly RH) NG --> See step 10 OK --> See step 11
8. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-524289-S06634024762013012800000)
9. GO TO PROBLEM SYMPTOMS TABLE. Refer to «Power Mirror cannot be Adjusted with Power Mirror Switch»(ref-524369-S00769652182013012800000)
10. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH. Refer to «REMOVAL»(ref-524351-S28709186962013012800000)
11. REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000)
12. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH. Refer to «REMOVAL»(ref-524351-S28709186962013012800000)
13. REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH. Refer to «REMOVAL»(ref-524351-S24370976332013012800000)
14. GO TO PROBLEM SYMPTOMS TABLE. Refer to «Power Mirror Surface Position is not Memorized»(ref-524369-S08725524632013012800000)

ECM sends the reverse signal to the main body ECU (multiplex network body ECU) via CAN communication. When receiving the reverse signal, the main body ECU (multiplex network body ECU) sends the reverse request signal to each outer mirror control ECU assembly. Each outer mirror control ECU assembly then performs control in response to the reverse signal.

See also:
• INSPECTION