Power Mirror Control System (Diagnostics): Overview Lexus IS II facelift

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SYSTEM DESCRIPTION

1. POWER MIRROR CONTROL SYSTEM DESCRIPTION This system has the following functions: automatic glare-resistant electrochromic (EC) mirror function, auto electric retract function, reverse shift-linked function, electrical remote control function, memory function and mirror heater function.
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 Receives a signal from the outer mirror control ECU assembly, and retracts and returns the outer rear view mirrors. Mirror heater Receives signal from the A/C amplifier assembly and operates the mirror heater. EC mirror cell Varies reflection rate of the mirror through function of EC elements. Outer mirror retract switch Retracts and returns the outer rear view mirrors. Mirror retract and return signals are sent to the outer mirror control ECU assembly from the main body ECU (passenger side junction block assembly). Mirror select switch Consists of R and L switches. One must be chosen to operate the outer mirror switch assembly. Outer mirror control ECU assembly Sends operation signals to each motor. Mirror adjust switch Mirror R and L signals are sent to the outer mirror control ECU assembly 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, M2 or M3 switch are pressed while the SET switch is being pressed, or M1, M2 or M3 switch is pressed within 3 seconds after the SET switch being pressed, a signal is input to the outer mirror control ECU assembly and the position control ECU and switch assembly, which records the mirror surface position. When the seat memory switch is pressed, a signal is input to the outer mirror control ECU assembly and sent to the position control ECU and switch assembly, which changes the mirror surface position to the recorded position.
3. SYSTEM OPERATION The remote control mirror has the following features. Function Outline Power retract mirror function Retracts and returns the outer rear view mirrors when the outer mirror retract switch is pressed. AUTO power retract mirror function Retracts and returns the outer rear view mirror if any of the following signals are detected while the engine switch is off and the power retract mirrors have been set to AUTO using the satellite switch and multi information display. Manual lock/unlock Key-linked lock/unlock Wireless door lock/unlock Wireless 30 seconds auto lock Entry lock/unlock Smart 30 seconds auto lock 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 Stores the adjusted mirror position in the outer mirror control ECU assembly. Automatic glare-resistant EC mirror function 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. Mirror heater function Automatically turns on mirror heater when the rear window defogger switch is turned on, or the wipers are operated automatically or manually. The rear window defogger and mirror heater automatically turn off after 15 min. Rear window defogger and mirror heater automatically turn off after 15 min.

This circuit detects the conditions of the outer mirror switch assembly.

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

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1. CHECK MULTIPLEX COMMUNICATION SYSTEM Use the Techstream to check if multiplex communication system is functioning normally. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387386-S38807516092011022400000). OK Multiplex communication DTC is not output. NG --> See step 7 OK: Go to next step
2. READ VALUE USING TECHSTREAM (OUTER MIRROR SWITCH ASSEMBLY) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Body / Data List. Read the Data List according to the display on the Techstream. 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: Switch in L position OFF: 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 not pressed down OFF: Mirror adjust switch not pressed down Check with the mirror select switch in the L position. OK On the Techstream screen, ON or OFF is displayed for each item according to the table above. NG --> See step 5 OK: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (POWER MIRROR CONTROL FUNCTION) Enter the following menus: Body Electrical / Mirror L / Active Test. Perform the Active Test according to the display on the Techstream. MIRROR L Tester Display Test Part Control Range Diagnostic Note Mirror Up/Down Mirror vertical operation Up / OFF / Down - Mirror Right/Left Mirror horizontal operation Right / OFF / Left - OK Power mirror operation is normal. NG --> See step 4 OK --> See step 8
4. INSPECT OUTER MIRROR ACTUATOR ASSEMBLY LH Remove the outer rear view mirror assembly LH. Refer to «REMOVAL»(ref-387455-S03039540952011022400000). Apply battery voltage and check the operation of the outer rear view mirror assembly LH. OK Measurement Condition Specified Condition Battery positive (+) --> Terminal h1-1 (DMVR) Battery negative (-) --> Terminal h1-10 (DM+R) Turns upward Battery negative (-) --> Terminal h1-1 (DMVR) Battery positive (+) --> Terminal h1-10 (DM+R) Turns downward Battery positive (+) --> Terminal h1-9 (DMHR) Battery negative (-) --> Terminal h1-10 (DM+R) Turns left Battery negative (-) --> Terminal h1-9 (DMHR) Battery positive (+) --> Terminal h1-10 (DM+R) Turns right NG --> See step 9 OK --> See step 10
5. INSPECT OUTER MIRROR SWITCH ASSEMBLY Remove the outer mirror switch assembly. Refer to «REMOVAL»(ref-387455-S29002727602011022400000). Turn the mirror select switch to the L position. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition M18-16 (M+) - M18-14 (E) Mirror adjust switch pressed up 95 to 105 ohms Mirror adjust switch pressed down 446 to 493 ohms Mirror adjust switch pressed left 760 to 840 ohms Mirror adjust switch pressed right 237 to 262 ohms Mirror adjust switch not pressed 10 kohms or higher M18-13 (MSW) - M18-14 (E) Mirror select switch L 95 to 105 ohms Mirror select switch off 10 kohms or higher NG --> See step 11 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (OUTER MIRROR SWITCH ASSEMBLY - MAIN BODY ECU) Disconnect the J74 connector from the main body ECU (cowl side junction block RH). Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M18-16 (M+) - J74-11 (MIRB) Always Below 1 ohms M18-13 (MSW) - J74-12 (MIRS) Always Below 1 ohms M18-14 (E) - J74-3 (MIRE) Always Below 1 ohms M18-16 (M+) - Body ground Always 10 kohms or higher M18-13 (MSW) - Body ground Always 10 kohms or higher M18-14 (E) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (OUTER MIRROR SWITCH ASSEMBLY - MAIN BODY ECU) OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK RH)
7. GO TO «MULTIPLEX COMMUNICATION SYSTEM»(ref-387486-S21448970252011022400000). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387386-S38489328662011022400000)
8. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER SIDE). Refer to «DISASSEMBLY - Step 32»(ref-387450-S00524585432011022400000)
9. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY LH. Refer to «REMOVAL»(ref-387455-S03039540952011022400000)
10. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER SIDE). Refer to «DISASSEMBLY - Step 13»(ref-387450-S00524585432011022400000)
11. REPLACE OUTER MIRROR SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-387455-S29002727602011022400000)

The circuit detects the conditions of the outer mirror switch assembly.

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

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1. CHECK «MULTIPLEX COMMUNICATION SYSTEM»(ref-387486-S21448970252011022400000) Use the Techstream to check if the multiplex communication system is functioning normally. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387386-S38807516092011022400000). OK Multiplex communication DTC is not output. NG --> See step 7 OK: Go to next step
2. READ VALUE USING TECHSTREAM (OUTER MIRROR SWITCH ASSEMBLY) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Body / Data List. Read the Data List according to the display on the Techstream. 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: Switch in R position OFF: 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, ON or OFF is displayed for each item according to the table above. NG --> See step 5 OK: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (POWER MIRROR CONTROL FUNCTION) Enter the following menus: Body Electrical / Mirror R / Active Test. Perform the Active Test according to the display on the Techstream. MIRROR R Tester Display Test Part Control Range Diagnostic Note Mirror Up/Down Mirror vertical operation Up / OFF / Down - Mirror Right/Left Mirror horizontal operation Right / OFF / Left - OK Power mirror operation is normal. NG --> See step 4 OK --> See step 8
4. INSPECT OUTER MIRROR ACTUATOR ASSEMBLY RH Remove the outer rear view mirror assembly RH. Refer to «REMOVAL»(ref-387455-S03039540952011022400000). Apply battery voltage and check the operation of the outer rear view mirror assembly RH. OK Measurement Condition Specified Condition Battery positive (+) --> Terminal g1-1 (PMVR) Battery negative (-) --> Terminal g1-10 (PM+R) Turns upward Battery negative (-) --> Terminal g1-1 (PMVR) Battery positive (+) --> Terminal g1-10 (PM+R) Turns downward Battery positive (+) --> Terminal g1-9 (PMHR) Battery negative (-) --> Terminal g1-10 (PM+R) Turns left Battery negative (-) --> Terminal g1-9 (PMHR) Battery positive (+) --> Terminal g1-10 (PM+R) Turns right NG --> See step 9 OK --> See step 10
5. INSPECT OUTER MIRROR SWITCH ASSEMBLY Remove the outer mirror switch assembly. Refer to «REMOVAL»(ref-387455-S29002727602011022400000). Turn the mirror select switch to the R position. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition M18-16 (M+) - M18-14 (E) Mirror adjust switch pressed up 95 to 105 ohms Mirror adjust switch pressed down 446 to 493 ohms Mirror adjust switch pressed left 760 to 840 ohms Mirror adjust switch pressed right 237 to 262 ohms Mirror adjust switch not pressed 10 kohms or higher M18-13 (MSW) - M18-14 (E) Mirror select switch R Below 1ohms Mirror select switch off 10 kohms or higher NG --> See step 11 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (OUTER MIRROR SWITCH ASSEMBLY - MAIN BODY ECU) Disconnect the J74 connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M18-16 (M+) - J74-11 (MIRB) Always Below 1 ohms M18-13 (MSW) - J74-12 (MIRS) Always Below 1 ohms M18-14 (E) - J74-3 (MIRE) Always Below 1 ohms M18-16 (M+) - Body ground Always 10 kohms or higher M18-13 (MSW) - Body ground Always 10 kohms or higher M18-14 (E) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (OUTER MIRROR SWITCH ASSEMBLY - MAIN BODY ECU) OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK RH)
7. GO TO «MULTIPLEX COMMUNICATION SYSTEM»(ref-387486-S21448970252011022400000). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387386-S38489328662011022400000)
8. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (PASSENGER SIDE). Refer to «DISASSEMBLY - Step 13»(ref-387450-S00524585432011022400000)
9. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY RH. Refer to «REMOVAL»(ref-387455-S03039540952011022400000)
10. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY. Refer to «DISASSEMBLY - Step 13»(ref-387450-S00524585432011022400000)
11. REPLACE OUTER MIRROR SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-387455-S29002727602011022400000)

This circuit detects the conditions of the outer mirror switch assembly.

The outer mirror switch assembly sends information about the operating condition of the mirror switch (switch input signals) through the multiplex communication line. Then the switch input signals are sent to the outer mirror control ECU assembly.

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DESCRIPTION

The mirror heater operation is linked with the defogger system or wiper and washer system.

Defogger linked function

When the window defogger switch, which is built into the multi-display assembly*1 or integration control and panel*2, is operated, the operation signals are transmitted to the A/C amplifier assembly through AVC-LAN and BEAN. When the A/C amplifier assembly receives the signals, it turns on the heater mirror relay to operate the mirror heater. When the defogger switch is turned off, the mirror heater also turns off simultaneously.

Wiper linked function

1. When the rain sensor detects raindrops while the windshield wiper switch assembly is in the AUTO position, the rain sensor sends a wiper operation request signal to the A/C amplifier assembly. When the A/C amplifier assembly receives the wiper operation request signal, it controls the heater mirror relay to operate the mirror heater. After the request signal from the rain sensor stops and 15 minutes elapses, the A/C amplifier assembly turns off the heater mirror relay to turn off the mirror heater.
2. When the windshield wiper switch assembly is moved to the INT, LO, HI or MIST position, the windshield wiper switch assembly sends a switch position signal to the A/C amplifier. When the A/C amplifier receives this signal, it controls the heater mirror relay to operate the mirror heater. After the switch position signal from the windshield wiper switch assembly stops and 15 minutes elapses, the A/C amplifier assembly turns off the heater mirror relay to turn off the mirror heater.

Note. The power mirror control system is a part of the multiplex communication system. This system features shared communication wiring that reduces the wiring complexity of the communication lines. The first step in any repair is to confirm the proper operation of the communication system. Proceed with troubleshooting after the communication has been verified (See MULTIPLEX COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING ). The mirror heater operation is linked wit the defogger system or wiper and washer system. Confirm that these systems are operating normally before starting the inspection.

1. *1: w/ LEXUS Navigation system
2. *2: w/o LEXUS Navigation system

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This circuit detects the conditions of the outer mirror retract switch.

The outer mirror retract switch sends information about the operating condition of the power retract outer mirror switch assembly (switch input signals) through the multiplex communication line. Then the switch input signals are sent to the outer mirror control ECU assembly.

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1. CHECK «MULTIPLEX COMMUNICATION SYSTEM»(ref-387486-S21448970252011022400000) Use the Techstream to check if the multiplex communication system is functioning normally. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387386-S38807516092011022400000). OK Multiplex communication DTC is not output. NG --> See step 8 OK: Go to next step
2. READ VALUE USING TECHSTREAM (OUTER MIRROR RETRACT SWITCH) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Body / Data List. Read the Data List according to the display on the Techstream. BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Outer Mirror Fold SW Outer mirror retract switch signal / ON or OFF ON: Outer mirror retract switch in retract position OFF: Outer mirror retract switch in driving position - OK On the Techstream screen, ON or OFF is displayed for each item according to the above. NG --> See step 4 OK: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (MIRROR RETRACT FUNCTION) Enter the following menus: Body Electrical / Mirror L or Mirror R / Active Test. Perform the Active Test according to the display on the Techstream. MIRROR L / MIRROR R Tester Display Test Part Control Range Diagnostic Note Mirror Fold Mirror retract operation ON / OFF - Mirror Return Mirror retract operation ON / OFF - Result Result Proceed to Outer rear view mirror assemblies operate normally A Outer rear view mirror assembly RH does not operate normally B Outer rear view mirror assembly LH does not operate normally C C --> See step 7 B --> See step 6 A --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK RH)
4. INSPECT OUTER MIRROR SWITCH ASSEMBLY Remove the outer mirror switch assembly. Refer to «REMOVAL»(ref-387455-S29002727602011022400000). Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition M18-22 (MR) - M18-20 (E) Retract position Below 1 ohms Except retract position 10 kohms or higher NG --> See step 9 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (OUTER MIRROR SWITCH ASSEMBLY - MAIN BODY ECU) Disconnect the J74 connector from the main body ECU (cowl side junction block RH). Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition J74-21 (RET) - M18-22 (MR) Always Below 1 ohms M18-22 (MR) - Body ground Always 10 kohms or higher M18-20 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (OUTER MIRROR SWITCH ASSEMBLY - MAIN BODY ECU) OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK RH)
6. INSPECT OUTER MIRROR ACTUATOR ASSEMBLY RH Remove the outer rear view mirror assembly RH. Refer to «REMOVAL»(ref-387455-S03039540952011022400000). For each mirror position: Disconnect the battery, set the mirror position by hand, connect the battery, and check the retract mirror movement. NOTE: Disconnect and reconnect the battery for 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 g1-3 (MR+) Battery negative (-) --> Terminal g1-11 (MR-) Forward position (A) Moves from (A) to retracted position (E) Battery negative (-) --> Terminal g1-3 (MR+) Battery positive (+) --> Terminal g1-11 (MR-) Forward position (A) Does not move Battery positive (+) --> Terminal g1-3 (MR+) Battery negative (-) --> Terminal g1-11 (MR-) Between forward position (A) and driving position (C) Moves from (B) to retracted position (E) Battery negative (-) --> Terminal g1-3 (MR+) Battery positive (+) --> Terminal g1-11 (MR-) Between forward position (A) and driving position (C) Moves from (B) to forward position (A) Battery positive (+) --> Terminal g1-3 (MR+) Battery negative (-) --> Terminal g1-11 (MR-) Driving position (C) Moves from (C) to retracted position (E) Battery negative (-) --> Terminal g1-3 (MR+) Battery positive (+) --> Terminal g1-11 (MR-) Driving position (C) Does not move Battery positive (+) --> Terminal g1-3 (MR+) Battery negative (-) --> Terminal g1-11 (MR-) Between driving position (C) and retracted position (E) Moves from (D) to retracted position (E) Battery negative (-) --> Terminal g1-3 (MR+) Battery positive (+) --> Terminal g1-11 (MR-) Between driving position (C) and retracted position (E) Moves from (D) to driving position (C) Battery positive (+) --> Terminal g1-3 (MR+) Battery negative (-) --> Terminal g1-11 (MR-) Retracted position (E) Does not move Battery negative (-) --> Terminal g1-3 (MR+) Battery positive (+) --> Terminal g1-11 (MR-) Retracted position (E) Moves from (E) to driving position (C) NG --> See step 10 OK --> See step 11
7. INSPECT OUTER MIRROR ACTUATOR ASSEMBLY LH Remove the outer rear view mirror assembly LH. Refer to «REMOVAL»(ref-387455-S03039540952011022400000). For each mirror position: Disconnect the battery, set the mirror position by hand, connect the battery, and check the retract mirror movement. NOTE: Disconnect and reconnect the battery for 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 h1-3 (MR+) Battery negative (-) --> Terminal h1-11 (MR-) Forward position (A) Moves from (A) to retracted position (E) Battery negative (-) --> Terminal h1-3 (MR+) Battery positive (+) --> Terminal h1-11 (MR-) Forward position (A) Does not move Battery positive (+) --> Terminal h1-3 (MR+) Battery negative (-) --> Terminal h1-11 (MR-) Between forward position (A) and driving position (C) Moves from (B) to retracted position (E) Battery negative (-) --> Terminal h1-3 (MR+) Battery positive (+) --> Terminal h1-11 (MR-) Between forward position (A) and driving position (C) Moves from (B) to forward position (A) Battery positive (+) --> Terminal h1-3 (MR+) Battery negative (-) --> Terminal h1-11 (MR-) Driving position (C) Moves from (C) to retracted position (E) Battery negative (-) --> Terminal h1-3 (MR+) Battery positive (+) --> Terminal h1-11 (MR-) Driving position (C) Does not move Battery positive (+) --> Terminal h1-3 (MR+) Battery negative (-) --> Terminal h1-11 (MR-) Between driving position (C) and retracted position (E) Moves from (D) to retracted position (E) Battery negative (-) --> Terminal h1-3 (MR+) Battery positive (+) --> Terminal h1-11 (MR-) Between driving position (C) and retracted position (E) Moves from (D) to driving position (C) Battery positive (+) --> Terminal h1-3 (MR+) Battery negative (-) --> Terminal h1-11 (MR-) Retracted position (E) Does not move Battery negative (-) --> Terminal h1-3 (MR+) Battery positive (+) --> Terminal h1-11 (MR-) Retracted position (E) Moves from (E) to driving position (C) NG --> See step 12 OK --> See step 13
8. GO TO «MULTIPLEX COMMUNICATION SYSTEM»(ref-387486-S21448970252011022400000). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387386-S38489328662011022400000)
9. REPLACE OUTER MIRROR SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-387455-S29002727602011022400000)
10. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY RH. Refer to «REMOVAL»(ref-387455-S03039540952011022400000)
11. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY. Refer to «DISASSEMBLY - Step 13»(ref-387450-S00524585432011022400000)
12. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY LH. Refer to «REMOVAL»(ref-387455-S03039540952011022400000)
13. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY. Refer to «DISASSEMBLY - Step 13»(ref-387450-S00524585432011022400000)

The circuit detects the conditions of the outer mirror retract switch built into the outer mirror switch assembly. The main body ECU (cowl side junction block RH) detects the operating condition of the outer mirror retract switch. The main body ECU (cowl side junction block RH) sends the outer mirror retract switch condition signal to the outer mirror control ECU assembly via the multiplex communication line.

When the outer mirror control ECU receives an entry lock/unlock signal*1 or wireless lock/unlock signal*2 and AUTO electric retract ON signal from the combination meter assembly via the multiplex communication line while the outer mirror retract switch is in the retract position, the outer mirror control ECU assembly operates the retract motors built into the outer rear view mirrors to retract or return the mirrors.

1. *1: When lock/unlock using the entry and start system
2. *2: When lock/unlock using the wireless door lock system

Scheme 56

The outer mirror control ECU assembly monitors each seat memory switch status. If a seat memory switch is operated, the outer mirror control ECU assembly sends the seat memory switch signal to the position control ECU and switch assembly through the multiplex communication line. Based on the seat memory switch signal, the position control ECU and switch assembly sends back a mirror position storage signal to the outer mirror control ECU assembly through the multiplex communication line. When the outer mirror control ECU assembly receives the mirror position storage signal, the mirror surface position will be memorized based on the mirror position signal sent from the mirror position sensors built into each outer mirror actuator assembly.

HINT

Each outer mirror actuator assembly has a built-in mirror vertical position sensor and mirror horizontal position sensor.

Note. The mirror surface position will not be memorized if the engine switch is not on (IG). The mirror surface position will not be stored if the seat memory SET switch and 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously. If the operation fails, the mirror surface position will not be memorized until the seat memory SET switch is turned off. The mirror surface position will not be memorized when the mirror is operated manually.

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1. CHECK MULTIPLEX COMMUNICATION SYSTEM Use the Techstream to check if the multiplex communication system is functioning normally. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387386-S38807516092011022400000). OK Multiplex communication DTC is not output. NG --> See step 8 OK: Go to next step
2. CHECK SEAT MEMORY SWITCH FUNCTION Check that the memory operation is properly completed. HINT: Mirror surface position memory function is initiated by a signal from the position control ECU and switch assembly. Therefore, be sure to confirm that the seat position memory function operates normally. Refer to «OPERATION CHECK»(ref-387461-S41697666822011022400000). OK Seat position can be memorized using seat memory switch. NG --> See step 9 OK: Go to next step
3. CHECK MIRROR SURFACE POSITION MEMORY FUNCTION Check the mirror surface position memory function. Using the outer mirror switch assembly, turn the mirror surface to the fully left position. Press the M1 switch while the SET switch is being pressed. Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized. Using the outer mirror switch assembly, turn the mirror surface to the fully right position. Press the M1 switch. Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully left position. HINT: Be sure to memorize the mirror surface position at the fully left position in order to confirm that a new position can be memorized because the mirror surface may be turned to the previously memorized position. Result Result Proceed to Both mirror surface positions are not memorized A RH side mirror surface position is not memorized B LH side mirror surface position is not memorized C C --> See step 6 B --> See step 4 A --> See step 10
4. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY RH Replace the outer mirror actuator assembly RH. Refer to «REMOVAL»(ref-387455-S03039540952011022400000). NEXT: Go to next step
5. CHECK MIRROR SURFACE POSITION MEMORY FUNCTION Check the mirror surface position memory function. Using the outer mirror switch assembly, turn the mirror surface to the fully left position. Press the M1 switch while the SET switch is being pressed. Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized. Using the outer mirror switch assembly, turn the mirror surface to the fully right position. Press the M1 switch. Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully left position. HINT: Be sure to memorize the mirror surface position at the fully left position in order to confirm that a new position can be memorized because the mirror surface may be turned to the previously memorized position. OK Mirror surface position memory function is normal. NG --> See step 11 OK --> END (OUTER MIRROR ACTUATOR ASSEMBLY RH WAS DEFECTIVE)
6. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY LH Replace the outer mirror actuator assembly LH. Refer to «REMOVAL»(ref-387455-S03039540952011022400000). NEXT: Go to next step
7. CHECK MIRROR SURFACE POSITION MEMORY FUNCTION Check the mirror surface position memory function. Using the outer mirror switch assembly, turn the mirror surface to the fully left position. Press the M1 switch while the SET switch is being pressed. Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized. Using the outer mirror switch assembly, turn the mirror surface to the fully right position. Press the M1 switch. Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully left position. HINT: Be sure to memorize the mirror surface position at the fully left position in order to confirm that a new position can be memorized because the mirror surface may be turned to the previously memorized position. OK Mirror surface position memory function is normal. NG --> See step 12 OK --> END (OUTER MIRROR ACTUATOR ASSEMBLY LH WAS DEFECTIVE)
8. GO TO «MULTIPLEX COMMUNICATION SYSTEM»(ref-387486-S21448970252011022400000) (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387386-S38489328662011022400000)
9. GO TO «POWER SEAT SWITCH»(ref-387380-S11615861952011022400000). Refer to «PROBLEM SYMPTOMS TABLE»(ref-387461-S32734639632011022400000)
10. REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-387380-S25539181422011022400000)
11. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (PASSENGER SIDE). Refer to «DISASSEMBLY - Step 13»(ref-387450-S00524585432011022400000)
12. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER SIDE). Refer to «DISASSEMBLY - Step 13»(ref-387450-S00524585432011022400000)

If any of seat memory switches M1, M2 or M3 is pressed, the outer mirror control ECU assembly detects the seat memory switch status and sends the switch signal to the position control ECU and switch assembly through the multiplex communication line. The position control ECU and switch assembly operates the power seat motor to move the seat to the memorized position and then sends back a reproduction signal to the outer mirror control ECU assembly through the multiplex communication line. When the outer mirror control ECU assembly receives the reproduction signal, the ECU operates the vertical and horizontal motors built into each outer rear view mirror to adjust the mirror surface to the memorized position.

Scheme 59

1. for AT: After the ECM receives a reverse signal from the park/neutral position switch, the ECM sends a reverse signal to the outer mirror control ECU via the CAN and BEAN communication system. The outer mirror control ECU activates the response to the reverse signal.
2. for MT: The main body ECU (cowl side junction block LH) detects the condition of the back up light switch. The main body ECU (cowl side junction block LH) also sends a back up light switch signal to the outer mirror control ECU via the sends a back up light switch signal to the outer mirror control ECU via the BEAN communication system. The outer mirror control ECU controls the reverse shift-linked function based on the back up light switch signal.

HINT

The reverse shift-linked function will not activate when the mirror select switch is in the neutral position (off).

Scheme 60

Scheme 61

1. CHECK MULTIPLEX COMMUNICATION SYSTEM Use the Techstream to check if multiplex communication system is functioning normally. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387386-S38807516092011022400000). OK Multiplex communication DTC is not output. NG --> See step 10 OK: Go to next step
2. CHECK REVERSE SHIFT-LINKED FUNCTION Turn the engine switch on (IG). Set the mirror select switch to L or R. Check that the mirror surface turns downward when the shift lever is moved to R. Result Result Proceed to Reverse shift-linked function on both mirrors is not normal (for AT) A Reverse shift-linked function on both mirrors is not normal (for MT) B Reverse shift-linked function on either mirror is not normal C C --> See step 9 B --> See step 6 A: Go to next step
3. CHECK CAN COMMUNICATION SYSTEM Use the Techstream to check if the CAN communication system is functioning normally. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387391-S01390035312011022400000). OK CAN communication DTC is not output. NG --> See step 11 OK: Go to next step
4. CHECK FOR DTC (P705) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / DTC. Check if DTC P0705 is output. Result Result Proceed to DTC P0705 is not output A DTC P0705 is output (for A760E) B DTC P0705 is output (for A760H) C DTC P0705 is output (for A960E) D D --> See step 14 C --> See step 13 B --> See step 12 A: Go to next step
5. READ VALUE USING TECHSTREAM Enter the following menus: Chassis / ABS/VSC / Data List. Read the Data List according to the display on the Techstream ABS/VSC/TRAC Tester Display Measurement Item/Range Normal Condition Diagnostic Note Shift Lever Position Shift lever position information / P/N, R, D/M, 1st-6th/B, FAIL Actual shift lever position - Result Result Proceed to R is displayed on the Techstream when the shift lever is in R A R is not displayed on the Techstream when the shift lever is in R (for 2GR-FE) B R is not displayed on the Techstream when the shift lever is in R (for 4GR-FE) C C --> See step 16 B --> See step 15 A --> REPLACE NETWORK GATEWAY ECU
6. CHECK BACK LIGHT FUNCTION Move the shift lever to the R position and check if the back up lights come on. OK The back up lights come on. NG --> See step 17 OK: Go to next step
7. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Body No. 3 / Data List. Read the Data List according to the display on the Techstream. BODY NO. 3 Tester Display Measurement Item/Range Normal Condition Diagnostic Note Bkup Light SW Back up light switch / ON or OFF ON: Back up light switch on OFF: Back up light switch off - NG --> See step 8 OK --> REPLACE BODY ECU (COWL SIDE JUNCTION BLOCK LH)
8. CHECK HARNESS AND CONNECTOR Disconnect the E55 and LJ connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E55-1 - LJ-23 (BKUP) Always Below 1ohms E55-1 - Body ground Always Below 1ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE BODY ECU (COWL SIDE JUNCTION BLOCK)
9. CHECK MEMORY AND REACTIVATION FUNCTION Turn the engine switch on (IG). Using the outer mirror switch assembly, turn the mirror surface to the fully left position. Press the M1 switch while the SET switch is being pressed. Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized. Using the outer mirror switch assembly, turn the mirror surface to the fully right position. Press the M1 switch. Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully left position. OK Memory and reactivation function is normal. NG --> See step 18 OK --> See step 19
10. GO TO «MULTIPLEX COMMUNICATION SYSTEM»(ref-387486-S21448970252011022400000). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387386-S38489328662011022400000)
11. GO TO «CAN COMMUNICATION SYSTEM»(ref-387391-S03462946972011022400000). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387391-S01390035312011022400000)
12. GO TO «AUTOMATIC TRANSMISSION (A760H) (SERVICE INFORMATION)»(ref-387323). Refer to «DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input)»(ref-387398-S10363823072011022400000)
13. GO TO «AUTOMATIC TRANSMISSION (A760H) (SERVICE INFORMATION)»(ref-387323) Refer to «DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input)»(ref-387401-S23835264002011022400000)
14. GO TO «AUTOMATIC TRANSMISSION (A760H) (SERVICE INFORMATION)»(ref-387323). Refer to «DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input)»(ref-387404-S00599983952011022400000)
15. REPLACE ECM (for 2GR-FE). Refer to «REMOVAL»(ref-387350-S07921752992011022400000)
16. REPLACE ECM (for 4GR-FE). Refer to «REMOVAL»(ref-387363-S31270846412011022400000)
17. GO TO «LIGHTING SYSTEM»(ref-387447-S38476266452011022400000) or «LIGHTING SYSTEM»(ref-387390-S07782494502011022400000). Refer to «PROBLEM SYMPTOMS TABLE»(ref-387390-S25382605332011022400000)
18. GO TO OTHER FLOW CHART (Power Mirrors do not Return to Memorized Position). Refer to «Power Mirrors do not Return to Memorized Position»(ref-387478-S02973498652011022400000)
19. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY. Refer to «DISASSEMBLY - Step 13»(ref-387450-S00524585432011022400000)

See also:
• REMOVAL
• ON-VEHICLE INSPECTION
• REMOVAL