Power Mirror Control System (Diagnostics & Symptom Tests): Diagnosis Lexus GS III рестайлинг

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use the following procedures to troubleshoot the power mirror control system.
2. *: Use Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. INSPECT BATTERY VOLTAGE Standard voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding. NEXT: Go to next step
3. INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)* Use Techstream to check if the Multiplex Communication System (MPX) is functioning normally. RESULT: Result Proceed to MPX DTC is not output A MPX DTC is output B B --> Go to THE APPROPRIATE MULTIPLEX COMMUNICATION SERVICE INFORMATION A: Go to next step
4. PROBLEM SYMPTOMS TABLE RESULT: Result Proceed to Fault is not listed in problem symptoms table A Fault is listed in problem symptoms table B B --> Go to step 6 A: Go to next step
5. OVERALL ANALYSIS AND TROUBLESHOOTING* Operation Check. Refer to «OPERATION CHECK»(ref-387189-S26605590002011022400000) DATA LIST / ACTIVE TEST. Refer to «DATA LIST / ACTIVE TEST»(ref-387189-S05682749202011022400000) Terminals of ECU. Refer to «TERMINALS OF ECU»(ref-387189-S26623542082011022400000) NEXT: Go to next step
6. ADJUST, REPAIR OR REPLACE NEXT: Go to next step
7. CONFIRMATION TEST NEXT --> END

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1. CHECK POWER MIRROR SWITCH OPERATION OF INTEGRATION CONTROL AND PANEL Turn the power switch ON (ACC). When the L mirror master switch is pressed, check that the indicator light on the LH side illuminates. With the mirror master switch set to L, check that the mirror surface moves UP, DOWN, LEFT and RIGHT normally. When the L mirror master switch is pressed again, check that the indicator light on the LH side turns off. When the R mirror master switch is pressed, check that the indicator light on the RH side illuminates. With the mirror master switch set to R, check that the mirror surface moves UP, DOWN, LEFT and RIGHT normally. When the R mirror master switch is pressed again, check that the indicator light on the RH side turns off.
2. CHECK MEMORY AND REACTIVATION FUNCTION HINT: The SET, M1, M2 and M3 switches of the seat memory switch are shown in the illustration. Turn the power switch ON (IG). The shift lever is in P. Check the M1 switch. Using the mirror master switch and mirror control switch, fully turn the mirror to the left. Check that the buzzer sounds for 0.5 seconds when the M1 switch is pressed while the SET switch is being pressed, or the M1 switch is pressed within 3 seconds after the SET switch is pressed. Change the position of the outer mirror and then press the M1 switch. Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully-turned-left position. Check the M2 switch. Using the mirror master switch and mirror control switch, fully turn the mirror to the right. Check that the buzzer sounds for 0.5 seconds when the M2 switch is pressed while the SET switch is being pressed, or the M2 switch is pressed within 3 seconds after the SET switch is pressed. Change the position of the outer mirror and then press the M2 switch. Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully-turned-right position. Check the M3 switch. Using the mirror master switch and mirror control switch, fully turn the mirror upward. Check that the buzzer sounds for 0.5 seconds when the M3 switch is pressed while the SET switch is being pressed, or the M3 switch is pressed within 3 seconds after the SET switch is pressed. Change the position of the outer mirror and then press the M3 switch. Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully-upward position. When the outer mirror is in the driving position: Check that switches M1, M2 and M3 cause the outer mirror to move to the recorded outer mirror positions under the following conditions: the power switch is turned off, the driver door is opened, and M1, M2 or M3 is pressed within 180 seconds. When the outer mirror is in the driving position: Check that switches M1, M2 and M3 cause the outer mirror to move to the recorded outer mirror positions under the following conditions: the power switch is turned off, the driver door is closed, and M1, M2 or M3 is pressed within 60 seconds. Operate the front vertical function of the power seat switch to tilt the seat down 3 times; Within 10 seconds after operating the front vertical function of the power seat switch, operate the lifter function of the power seat switch to tilt up and the reclining function of the power seat switch to recline the seat simultaneously and hold both switches for 10 seconds. HINT: The buzzer sounds for 0.5 seconds when the memory is cleared. Check that all recorded outer mirror positions are cleared. Attempt to record a seat position by pressing and holding the SET switch and two other switches (among M1, M2 and M3 switches). No outer mirror position should be recorded. Check this by pressing M1, M2 or M3 switch and make sure that the outer mirror does not move.
3. CHECK POWER RETRACTABLE MIRROR Turn the power switch ON (ACC). At each position of the outer mirror body, check the retractable mirror operation when operating the retract switch of the outer mirror. Move the mirrors to the driving position. Press the retract switch. Check that the right and left mirrors move from the driving position to the retracted position. Move the mirrors to the driving position. Move one of the mirrors to the forward position by hand. Press the retract switch. Check that the mirror moves from the forward position to the retracted position. Check that the other mirror moves from the driving position to the retracted position. Move the mirrors to the driving position. Move one of the mirrors to the retracted position by hand. Press the retract switch. Check that the outer mirror moves from the driving position to the retracted position. Move the mirrors to the retracted position. Press the retract switch. Check that the right and left mirrors move from the retracted position to the driving position. Move the mirrors to the retracted position. Move one of the mirrors to the driving position by hand. Press the retract switch. Check that the other mirror moves from the retracted position to the driving position. Check the operation of the outer mirror body in relation to retract switch operations and power switch position changes. When the mirror body in operating, turn the power switch OFF. Check that the mirror operation does not stop and continues until the operation has finished. Repeat the step above. This time, before the mirror operation completes, turn the power switch ON (ACC) and press the retract switch. Check that the mirror operates in the opposite detection. Check the operation of the outer mirror body when it is retrained by obstacle. When the mirror body is moving to the retracted or driving position, retrain the mirror body by hand. Check that the mirror stops moving. With the mirror body stopped partway, press the retract switch. Check that the mirror body moves in the opposite direction.
4. CHECK REVERSE-SHIFT-LINKED OPERATION OF MIRRORS Turn the power switch ON (IG). Set the mirror master switch to L or R. Check that the mirror faces downward when the shift lever is moved to R. Check that the outer rear view mirror returns to the original position when the one of the following conditions is met: Shift lever is moved to position other than P. Mirror master switch is in the neutral position (OFF). Power switch is turned OFF.
5. CHECK MIRROR HEATER Turn the power switch ON (IG). Check that pressing the rear defogger switch illuminates the indicator and warms the mirror surface. Check that after approximately 15 minutes, the indicator light turns off and the mirror heater deactivates.

PROBLEM SYMPTOMS TABLE

HINT

1. Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
2. Inspect the fuses and relays related to the system before inspecting the suspected areas below.

POWER MIRROR CONTROL SYSTEM

HINT

*: w/ Seat position memory

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1. CHECK FRONT MULTIPLEX NETWORK DOOR ECU LH Disconnect the M9, M10 and z6 ECU connectors. Measure the voltage and resistance of the wire harness side connectors. Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition GND (M9-1) - Body ground W-B - Body ground Ground Always Below 1 ohms CPUB (M9-4) - GND (M9-1) LG - W-B Battery (ECU power source) Always 11 to 14 V SIG (M9-3) - GND (M9-1) Y - W-B Ignition power supply Power switch OFF Below 1 V Power switch ON (IG) 11 to 14 V BDR (M9-6) - GND (M9-1) L - W-B Battery (ECU power source) Always 11 to 14 V - (z6-12) - + (z6-4) B-R - BR-W Mirror heater output and ground 25°C (75°F) 3.6 to 4.8 ohms SEL1 (M10-11) - SELE (M10-12) P - P Terminal for identification of driver side Always Below 1 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the M9, M10 and z6 ECU connectors. Measure the voltage of the connectors. Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition MR (z6-3) - GND (M9-1) G - W-B Mirror retract motor output (retracting) Mirror retract switch ON (Outer rear view mirror LH is retracting) 11 to 14 V MF (z6-11) - GND (M9-1) L - W-B Mirror retract motor output (returning) Mirror retract switch OFF (Outer rear view mirror LH is returning) 11 to 14 V M+ (z6-10) - GND (M9-1) B - W-B Mirror motor output Mirror master switch LEFT, Mirror control switch OFF Below 1 V Mirror master switch LEFT, Mirror control switch UP or LEFT Below 1 V Mirror master switch LEFT, Mirror control switch DOWN or RIGHT 11 to 14 V MH (z6-9) - GND (M9-1) R - W-B Mirror motor output Mirror master switch LEFT, Mirror control switch OFF Below 1 V Mirror master switch LEFT, Mirror control switch RIGHT Below 1 V Mirror master switch LEFT, Mirror control switch LEFT 11 to 14 V MV (z6-1) - GND (M9-1) W - W-B Mirror motor output Mirror master switch LEFT, Mirror control switch OFF Below 1 V Mirror master switch LEFT, Mirror control switch DOWN Below 1 V Mirror master switch LEFT, Mirror control switch UP 11 to 14 V + (z6-4) - GND (M9-1) BR-W - W-B Mirror heater output Rear defogger switch ON 11 to 14 V Rear defogger switch OFF Below 1 V VSSL (z6-6) - E1 (z6-14) V - GR Vertical direction position signal Mirror master switch RIGHT or LEFT Mirror control switch UP or DOWN Voltage fluctuates between 0 and 5 V HSSL (z6-13) - E1 (z6-14) LG - GR Horizontal direction position signal Mirror master switch RIGHT or LEFT Mirror control switch RIGHT or LEFT Voltage fluctuates between 0 and 5 V VC (z6-5) - E1 (z6-14) SB - GR Power source for mirror position sensor Power switch OFF during sleep mode Below 1 V Power switch ON (IG) 3.5 to 5.5 V ECI+ (M9-18) - ECI- (M9-19) BR - BE EC mirror signal Electrochromic mirror system is operating 1.05 to 1.35 V Electrochromic mirror system is not operating Below 1 V EC+ (z6-7) - EC- (z6-15) BR - B-L EC mirror signal Electrochromic mirror system is operating 1.05 to 1.35 V Electrochromic mirror system is not operating Below 1 V SEL1 (M10-11) - GND (M9-1) P - W-B Terminal for identification of driver side Always Below 1 V If the result is not as specified, the ECU may have a malfunction.
2. CHECK FRONT MULTIPLEX NETWORK DOOR ECU RH Disconnect the M4 and z5 ECU connectors. Measure the voltage and resistance of the wire harness side connectors. Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition GND (M4-1) - Body ground W-B - Body ground Ground Always Below 1 ohms CPUB (M4-4) - GND (M4-1) LG - W-B Battery (ECU power source) Always 11 to 14 V SIG (M4-3) - GND (M4-1) L - W-B Ignition power supply Power switch OFF Below 1 V Power switch ON (IG) 11 to 14 V BDR (M4-6) - GND (M4-1) L - W-B Battery (ECU power source) Always 11 to 14 V - (z5-12) - + (z5-4) B-R - BR-W Mirror heater output and ground 25°C (75°F) 3.6 to 4.8 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the M4 and z5 ECU connectors. Measure the voltage of the connectors. Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition MR (z5-3) - GND (M4-1) G - W-B Mirror retract motor output (retracting) Mirror retract switch ON (Outer rear view mirror RH is retracting) 11 to 14 V MF (z5-11) - GND (M4-1) L - W-B Mirror retract motor output (returning) Mirror retract switch OFF (Outer rear view mirror RH is returning) 11 to 14 V M+ (z5-10) - GND (M4-1) B - W-B Mirror motor output Mirror master switch RIGHT, Mirror control switch OFF Below 1 V Mirror master switch RIGHT, Mirror control switch UP or LEFT Below 1 V Mirror master switch RIGHT, Mirror control switch DOWN or RIGHT 11 to 14 V MH (z5-9) - GND (M4-1) R - W-B Mirror motor output Mirror master switch RIGHT, Mirror control switch OFF Below 1 V Mirror master switch RIGHT, Mirror control switch RIGHT Below 1 V Mirror master switch RIGHT, Mirror control switch LEFT 11 to 14 V MV (z5-1) - GND (M4-1) W - W-B Mirror motor output Mirror master switch RIGHT, Mirror control switch OFF Below 1 V Mirror master switch RIGHT, Mirror control switch DOWN Below 1 V Mirror master switch RIGHT, Mirror control switch UP 11 to 14 V + (z5-4) - GND (M4-1) BR-W - W-B Mirror heater output Rear defogger switch ON 11 to 14 V Rear defogger switch OFF Below 1 V VSSR (z5-6) - E1 (z5-14) V - GR Vertical direction position signal Mirror master switch RIGHT or LEFT Mirror control switch UP or DOWN Voltage fluctuates between 0 and 5 V HSSR (z5-13) - E1 (z5-14) LG - GR Horizontal direction position signal Mirror master switch RIGHT or LEFT Mirror control switch RIGHT or LEFT Voltage fluctuates between 0 and 5 V VC (z5-5) - E1 (z5-14) SB - GR Power source for mirror position sensor Power switch ON (ACC) or OFF during sleep mode Below 1 V Power switch ON (IG) 3.5 to 5.5 V ECI+ (M4-18) - ECI- (M4-19) BR - BE EC mirror signal Electrochromic mirror system is operating 1.05 to 1.35 V Electrochromic mirror system is not operating Below 1 V EC+ (z5-7) - EC- (z5-15) BR - B-L EC mirror signal Electrochromic mirror system is operating 1.05 to 1.35 V Electrochromic mirror system is not operating Below 1 V If the result is not as specified, the ECU may have a malfunction.
3. INSPECT MULTIPLEX NETWORK MASTER SWITCH Disconnect the Q13 master switch connector. Measure the voltage and resistance of the wire harness side connector. Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition E (Q13-12) - Body ground W-B - Body ground Ground Always Below 1 ohms CPUB (Q13-15) - E (Q13-12) P - W-B Power source for CPU and relevant device Always 11 to 14 V SIG (Q13-18) - E (Q13-12) V - W-B Power source for CPU and relevant device Power switch OFF Below 1 V Power switch ON (IG) 11 to 14 V If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the Q13 master switch connector. Measure the voltage of the connector. Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition MM (Q13-8) - E (Q13-12) SB - W-B SET switch signal SET switch OFF 11 to 14 V SET switch ON Below 1 V M1 (Q13-7) - E (Q13-12) L - W-B M1 switch signal M1 switch OFF 11 to 14 V M1 switch ON Below 1 V M2 (Q13-5) - E (Q13-12) V - W-B M2 switch signal M2 switch OFF 11 to 14 V M2 switch ON Below 1 V M3 (Q13-14) - E (Q13-12) R - W-B M3 switch signal M3 switch OFF 11 to 14 V M3 switch ON Below 1 V If the result is not as specified, the switch may have a malfunction.

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1. DESCRIPTION Power mirror control system data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use Techstream to check for malfunctions and perform repairs.
2. CHECK DLC3 The ECU uses ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with ISO 15031-3 and matches the ISO 15765-4 format. Symbols (Terminals No.) Terminal Description Condition Specified Condition SIL (7) - SG (5) Bus "+" line During transmission Pulse generation BAT (16) - Body ground Battery positive Always 10 to 14 V CG (4) - Body ground Chassis ground Always Below 1 ohms SG (5) - Body ground Signal ground Always Below 1 ohms CANH (6) - CANL (14) CAN bus line Power switch OFF* 54 to 69 ohms CANL (14) - CG (4) HIGH-level CAN bus line Power switch OFF* 200 ohms or higher CANH (6) - CG (4) HIGH-level CAN bus line Power switch OFF* 200 ohms or higher CANL (14) - Battery positive LOW-level CAN bus line Power switch OFF* 6 kohms or higher CANH (6) - Battery positive LOW-level CAN bus line Power switch OFF* 6 kohms or higher NOTE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the power switch, any other switches or the doors. If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector. HINT: Connect the cable of Techstream to the DLC3, turn the power switch ON (IG) and attempt to use the tester. If the screen displays UNABLE TO CONNECT TO VEHICLE, a problem exists in the vehicle side or the tester side. If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle. If communication is still not possible when the tester is connected to another vehicle, the problem is probably in the tester itself. Consult the Service Department listed in the tester's instruction manual.

DATA LIST / ACTIVE TEST

1. READ DATA LIST HINT: Using Techstream's DATA LIST allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the DATA LIST early in troubleshooting is one way to save time. Connect Techstream to the DLC3. Turn the power switch ON (IG). Read the DATA LIST. FRONT MULTIPLEX NETWORK DOOR ECU LH, RH: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Mirror Position Sensor V Vertical mirror position / Min.: 0, Max.: 5 V Within 0 to 5 V - Mirror Position Sensor H Horizontal mirror position / Min.: 0, Max.: 5 V Within 0 to 5 V - Outer Mirror Lock Detect Mirror retract motor lock detection signal / ON or OFF ON: Mirror retract motor lock signal is detected OFF: Mirror retract motor lock signal is not detected - INTEGRATION CONTROL AND PANEL ASSEMBLY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Mirror Selection SW (R) Mirror master switch signal for RH mirror / ON or OFF ON: Switch is in R position OFF: Switch is OFF or in L position - Mirror Selection SW (L) Mirror master switch signal for LH mirror / ON or OFF ON: Switch is in L position OFF: Switch is OFF or in R position - Mirror Position SW (R) Mirror control switch signal (RIGHT) / ON or OFF ON: RIGHT switch is ON OFF: Any switch except RIGHT is ON or all switches are OFF - Mirror Position SW (Up) Mirror control switch signal (UP) / ON or OFF ON: UP switch is ON OFF: Any switch except UP is ON or all switches are OFF - Mirror Position SW (L) Mirror control switch signal (LEFT) / ON or OFF ON: LEFT switch is ON OFF: Any switch except LEFT is ON or all switches are OFF - Mirror Position SW (Dwn) Mirror control switch signal (DOWN) / ON or OFF ON: DOWN switch is ON OFF: Any switch except DOWN is ON or all switches are OFF - Outer Mirror Fold SW Mirror retract switch signal / ON or OFF ON: Switch is ON (retracting) OFF: Switch is OFF (returning)
2. PERFORM ACTIVE TEST HINT: Performing Techstream's ACTIVE TEST allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the ACTIVE TEST early in the troubleshooting is one way to save time. The DATA LIST can be displayed during the ACTIVE TEST. Connect Techstream to the DLC3. Turn the power switch ON (IG). Perform the ACTIVE TEST by following the directions on the tester screen. FRONT MULTIPLEX NETWORK DOOR ECU LH, RH: Tester Display Test Part Control Range Diagnostic Note Mirror Heater Mirror heater operation OFF / ON - Mirror Fold / Return Mirror retract operation FOLD / RETURN - Mirror Right / Left Mirror horizontal operation RIGHT / LEFT - Mirror Up / Down Mirror vertical operation UP / DOWN