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Power Mirror Control (W/ Memory) (Diagnostics & Symptom Tests): Overview Lexus ES XV40 facelift

Mirrors 21 illustrations ~2763 words

SYSTEM DESCRIPTION

The memory system can store the driver seat, front passenger seat, outside rear view mirror positions and tilt & telescopic position. Up to 2 memory positions can be stored in the system memory and recalled. 2 positions can be saved for the driver memory switch or front passenger memory switch.

  1. Each seat ECU stores the seat position (seat slide, front vertical, rear vertical and reclining) in its memory. Each seat ECU is built into the power seat switch.
  2. The mirror ECU stores the outside rear view mirror position in its memory.
  3. The tile & telescopic ECU stores the tilt & telescopic position in its memory.
  4. The seat ECU (Driver) outputs a reproduction signal to ECU.

DESCRIPTION

  1. A switch signal of the outer mirror switch is transmitted to the selected outer mirror control ECU by way of the main body ECU. Then, the outer mirror control ECU activates the mirror motor to move the mirror UP, DOWN, RIGHT and LEFT in response to the input.
  2. Mirror control switch and memorized mirror position signals (from the position control ECU & switch (seat ECU)) are sent to the mirror control ECU. The mirror control ECU moves the selected mirror UP, DOWN, LEFT and RIGHT in response to the input.

HINT

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 the Multiplex Communication System).

Scheme 38

Scheme 38: WIRING DIAGRAM
Scheme 38: WIRING DIAGRAM

Scheme 39

Scheme 39: PROCEDURE
Scheme 39: PROCEDURE

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Scheme 42
  1. CHECK DTCs Select the DTC check on Techstream to check for communication errors. Result No DTC is output A DTCs are output (CAN communication) B B --> See step 5 A: Go to next step
  2. INSPECT OUTER MIRROR SWITCH Remove the outer mirror switch. Measure the resistance according to the value(s) in the table below when the switch is operated. Standard resistance Select "L" on the left/right adjustment switch Select "R" on the left/right adjustment switch Tester Connection Switch Position Specified Condition 7 - 9 UP 100 ohms DOWN 470 ohms LEFT 800 ohms RIGHT 250 ohms Tester Connection Switch Position Specified Condition 7 - 9 UP 100 ohms DOWN 470 ohms LEFT 800 ohms RIGHT 250 ohms NG --> See step 6 OK: Go to next step
  3. CHECK WIRE HARNESS (OUTER MIRROR SWITCH - MAIN BODY ECU) Disconnect the E61 and E67 connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition E67-7 - E61-11 Always Below 1 ohms E67-8 - E61-12 Always Below 1 ohms E67-9 - E61-2 Always Below 1 ohms E67-7 - Body ground Always 10 kohms or higher E67-8 - Body ground Always 10 kohms or higher E67-9 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT OUTER MIRROR ACTUATOR ASSEMBLY Outer rear view mirror LH: Disconnect the I3 connector. Apply battery voltage and check operation of the mirror face. Standard Measurement Condition Mirror Operation Battery positive (+) --> I3-1 (MV) Battery negative (-) --> I3-10 (M+) Turns upward (A) Battery positive (+) --> I3-10 (M+) Battery negative (-) --> I3-1 (MV) Turns downward (B) Battery positive (+) --> I3-9 (MH) Battery negative (-) --> I3-10 (M+) Turns left (C) Battery positive (+) --> I3-10 (M+) Battery negative (-) --> I3-9 (MH) Turns right (D) Outer rear view mirror RH: Disconnect the H4 connector. Apply battery voltage and check operation of the mirror face. Standard Measurement Condition Mirror Operation Battery positive (+) --> H4-1 (MV) Battery negative (-) --> H4-10 (M+) Turns upward (A) Battery positive (+) --> H4-10 (M+) Battery negative (-) --> H4-1 (MV) Turns downward (B) Battery positive (+) --> H4-9 (MH) Battery negative (-) --> H4-10 (M+) Turns left (C) Battery positive (+) --> H4-10 (M+) Battery negative (-) --> H4-9 (MH) Turns right (D) NG --> See step 7 OK --> REPLACE OUTER MIRROR CONTROL ECU
  5. GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-396655-S36530604142011050900000)
  6. REPLACE OUTER MIRROR SWITCH. Refer to «REMOVAL»(ref-396717-S39230961292011050900000)
  7. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY. Refer to «REMOVAL»(ref-396717-S19099195202011050900000)

When the mirror defogger switch, which is built into the heater control assembly, is operated, operation signals are transmitted to the A/C amplifier assembly through LIN. When the amplifier assembly receives the signals, it turns on the RR DEF relay to operate the mirror defogger.

Scheme 43

Scheme 43: WIRING DIAGRAM
Scheme 43: WIRING DIAGRAM

Scheme 44

Scheme 44: PROCEDURE
Scheme 44: PROCEDURE

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Scheme 47

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Scheme 49
  1. CHECK LIN COMMUNICATION LINE Disconnect the E1 and E3 connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition E1-37 (LIN1) - E3-15 (TX+) Always Below 1 ohms E1-37 (LIN1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. INSPECT AIR CONDITIONING AMPLIFIER ASSEMBLY Disconnect the E1 connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition E1-38 (RDFG) - Body ground Engine switch on (IG) 10 to 14 V OK --> See step 5 NG: Go to next step
  3. REPLACE AIR CONDITIONING CONTROL ASSEMBLY Replace the air conditioning control assembly. HINT: NEXT: Go to next step
  4. CONFIRMATION DRIVING PATTERN Turn the engine switch on (IG), press the mirror defogger switch, and check that the mirror defogger operates. NG --> REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY OK --> END
  5. CHECK DEFOGGER RELAY Turn the engine switch on (IG), and press the mirror defogger switch. Check that operating sound of the RR DEF relay is heard. Result Result Proceed to Relay operating sound is heard OK Relay operating sound is not heard NG NG --> See step 9 NG: Go to next step
  6. INSPECT DEFOGGER RELAY NG --> REPLACE DEFOGGER RELAY OK: Go to next step
  7. CHECK WIRE HARNESS (RR DEF RELAY - BATTERY POSITIVE) Disconnect the RR DEF relay. Measure the voltage according to the value(s) in the table below. Standard voltage Engine room R/B, J/B Tester Connection Condition Specified Condition 1 - Body ground Engine switch on (IG) 10 to 14 V NG --> REPAIR OR REPLACE A/C NO. 2 FUSE, HARNESS OR CONNECTOR OK: Go to next step
  8. CHECK WIRE HARNESS (RR DEF RELAY - A/C AMPLIFIER ASSEMBLY) Disconnect the RR DEF relay and A/C amplifier assembly connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 2 - E1-38 (RDFG) Always Below 1 ohms 2 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY
  9. INSPECT DEFOGGER RELAY NG --> REPLACE DEFOGGER RELAY OK: Go to next step
  10. CHECK WIRE HARNESS (RR DEF RELAY - BATTERY POSITIVE AND BODY GROUND) Disconnect the RR DEF relay. Measure the voltage and resistance according to the value(s) in the table below. Standard resistance Engine room R/B, J/B Tester Connection Condition Specified Condition 4 - Body ground Always Below 1 ohms Standard voltage Engine room R/B, J/B Tester Connection Condition Specified Condition 5 - Body ground Engine switch on (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  11. INSPECT MIR HTR FUSE Remove the MIR HTR fuse from the instrument panel J/B. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition MIR HTR fuse Always Below 1 ohms NG --> REPLACE MIR HTR FUSE OK: Go to next step
  12. CHECK WIRE HARNESS (ENGINE ROOM R/B, J/B - INSTRUMENT PANEL J/B) Disconnect the RR DEF relay and instrument panel J/B connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 3 - DB-2 Always Below 1 ohms 3 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  13. CHECK WIRE HARNESS (INSTRUMENT PANEL J/B - OUTER REAR VIEW MIRROR) Disconnect the outer rear view mirror and instrument panel J/B connectors. Measure the resistance according to the value(s) in the table below. (): Outer mirror RH Standard resistance Outer rear view mirror LH Outer rear view mirror RH Tester Connection Condition Specified Condition I3-4 - DK-1 Always Below 1 ohms DK-1 - Body ground Always 10 kohms or higher Tester Connection Condition Specified Condition H4-4 - DJ-12 Always Below 1 ohms DJ-12 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> END

When the seat memory switch M1 or M2 is pressed, the seat memory switch transmits a signal of the memorized mirror position to the outer mirror control ECU Then, the outer mirror control ECU drives the mirror motor.

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Scheme 50: WIRING DIAGRAM
Scheme 50: WIRING DIAGRAM

Scheme 51

Scheme 51: PROCEDURE
Scheme 51: PROCEDURE

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Scheme 52
Scheme 52
  1. READ VALUE USING TECHSTREAM Check the DATA LIST for proper function of the seat memory switch. Mirror-L/Mirror-R Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Mem 1SW Driving position memorized in seat memory switch M1/ON (1) or OFF (0) 1: Memorized 0: Not memorized - D Mem 2 SW Driving position memorized in seat memory switch M2/ON (1) or OFF (0) 1: Memorized 0: Not memorized - P Mem 1 SW Driving position memorized in seat memory switch M1/ON (1) or OFF (0) 1: Memorized 0: Not memorized - P Mem 2 SW Driving position memorized in seat memory switch M2/ON (1) or OFF (0) 1: Memorized 0: Not memorized - OK --> REPLACE OUTER MIRROR CONTROL ECU NG: Go to next step
  2. CHECK SEAT MEMORY SWITCH Remove the seat memory switch. Measure the resistance according to the value(s) in the table below when the switch is operated. Standard resistance Tester Connection Switch Condition Specified Condition 1 (E) - 2 (MMRY) *1 1 (E) - 2 (MRY) *2 "SET" switch ON Below 1 ohms "SET" switch OFF 10 kohms or higher 1 (E) - 4 (1) *1 1 (E) - 4 (M1) *2 "1" switch ON Below 1 ohms "SET" switch OFF 10 kohms or higher 1 (E) - 3 (2) *1 1 (E) - 3 (M2) *2 "2" switch ON Below 1 ohms "SET" switch OFF 10 kohms or higher HINT: *1: LH *2: RH NG --> REPLACE SEAT MEMORY SWITCH OK: Go to next step
  3. CHECK WIRE HARNESS (SEAT MEMORY SWITCH - OUTER MIRROR CONTROL ECU) Disconnect the E65 and I6 *1 or H7 *2 switch connectors. Measure the resistance according to the value(s) in the table below. Standard resistance LH side RH side Tester Connection Condition Specified Condition I6-2 (MMRY) - E65-9 (MM) Always Below 1 ohms I6-4 (1) - E65-8 (M1) Always Below 1 ohms I6-3 (2) - E65-7 (M2) Always Below 1 ohms E6-1 (E) - E65-10 (MSWE) Always Below 1 ohms Tester Connection Condition Specified Condition H7-2 (MRY) - E65-29 (MM) Always Below 1 ohms H7-4 (M1) - E65-28 (M1) Always Below 1 ohms H7-3 (M2) - E65-27 (M2) Always Below 1 ohms H7-1 (E) - E65-30 (MSWE) Always Below 1 ohms HINT: *1: LH *2: RH NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT OUTER MIRROR ACTUATOR ASSEMBLY Outer rear view mirror LH: Disconnect the I3 connector. Apply battery voltage and check operation of the mirror face. Standard Measurement Condition Mirror Operation Battery positive (+) --> I3-1 (MV) Battery negative (-) --> I3-10 (M+) Turns upward (A) Battery positive (+) --> I3-10 (M+) Battery negative (-) --> I3-1 (MV) Turns downward (B) Battery positive (+) --> I3-9 (MH) Battery negative (-) --> I3-10 (M+) Turns left (C) Battery positive (+) --> I3-10 (M+) Battery negative (-) --> I3-9 (MH) Turns right (D) Outer rear view mirror RH: Disconnect the H4 connector. Apply battery voltage and check operation of the mirror face. Standard Measurement Condition Mirror Operation Battery positive (+) --> H4-1 (MV) Battery negative (-) --> H4-10 (M+) Turns upward (A) Battery positive (+) --> H4-10 (M+) Battery negative (-) --> H4-1 (MV) Turns downward (B) Battery positive (+) --> H4-9 (MH) Battery negative (-) --> H4-10 (M+) Turns left (C) Battery positive (+) --> H4-10 (M+) Battery negative (-) --> H4-9 (MH) Turns right (D) NG --> REPLACE OUTER MIRROR ACTUATOR ASSEMBLY OK --> END

After the transmission control ECU receives a reverse signal from the park/neutral position switch, transmission control ECU the sends a reverse signal to the outer mirror control ECU via the CAN communication systems. The outer mirror control ECU activates the mirror motor in response to the reverse signal.

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Scheme 53: WIRING DIAGRAM
Scheme 53: WIRING DIAGRAM

Scheme 54

Scheme 54: PROCEDURE
Scheme 54: PROCEDURE

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Scheme 56
  1. CHECK DTCs Select the DTC check on Techstream to check for communication errors. Result Not output DTC codes A Output DTC codes (CAN communication) B B --> See step 8 A: Go to next step
  2. READ VALUE USING TECHSTREAM Check the DATA LIST for proper function of the reverse signal. ECT Tester Display Measurement Item/Range Normal Condition Diagnostic Note Reverse PNP switch status/ON or OFF Shift lever position/ON (R) or OFF When the shift lever position displayed on Techstream differs from the actual position, adjustment of the PNP switch or the shift cable may be incorrect. OK --> See step 7 NG: Go to next step
  3. CHECK WIRE HARNESS (BATTERY POSITIVE VOLTAGE) Disconnect the B36 connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition B36-1 - Body ground Engine switch on (IG) 10 to 14 V NG --> REPAIR OR REPLACE GAUGE NO. 1 FUSE OR HARNESS AND CONNECTOR OK: Go to next step
  4. CHECK WIRE HARNESS (TRANSMISSION CONTROL ECU - PARK/NEUTRAL POSITION SWITCH) Disconnect the B36 and B40 connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition B40-15 - B36-2 Always Below 1 ohms B40-15 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE WIRE HARNESS OK: Go to next step
  5. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Disconnect the B36 connector. Measure the resistance according to the value(s) in the table below. Standard resistance Shift Position Tester Connection Specified Condition P 1 - 2 Below 1 ohms Except P 1 - 2 10 kohms or higher NG --> See step 10 OK: Go to next step
  6. CONFIRM MIRROR OPERATION Turn the engine switch on (IG), and check the mirror operation. NG --> REPLACE OUTER MIRROR CONTROL ECU OK --> END
  7. INSPECT OUTER MIRROR ACTUATOR ASSEMBLY Outer rear view mirror LH: Disconnect the I3 connector. Apply battery voltage and check operation of the mirror face. Standard Measurement Condition Mirror Operation Battery positive (+) --> I3-1 (MV) Battery negative (-) --> I3-10 (M+) Turns upward (A) Battery positive (+) --> I3-10 (M+) Battery negative (-) --> I3-1 (MV) Turns downward (B) Battery positive (+) --> I3-9 (MH) Battery negative (-) --> I3-10 (M+) Turns left (C) Battery positive (+) --> I3-10 (M+) Battery negative (-) --> I3-9 (MH) Turns right (D) Outer rear view mirror RH: Disconnect the H4 connector. Apply battery voltage and check operation of the mirror face. Standard Measurement Condition Mirror Operation Battery positive (+) --> H4-1 (MV) Battery negative (-) --> H4-10 (M+) Turns upward (A) Battery positive (+) --> H4-10 (M+) Battery negative (-) --> H4-1 (MV) Turns downward (B) Battery positive (+) --> H4-9 (MH) Battery negative (-) --> H4-10 (M+) Turns left (C) Battery positive (+) --> H4-10 (M+) Battery negative (-) --> H4-9 (MH) Turns right (D) NG --> See step 9 OK --> REPLACE OUTER MIRROR CONTROL ECU
  8. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-396655-S39167772552011050900000)
  9. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY. Refer to «REMOVAL»(ref-396717-S19099195202011050900000)
  10. REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-396649-S20158942132011050900000)

This is the power source circuit for the outer mirror control ECU.

Scheme 57

Scheme 57: WIRING DIAGRAM
Scheme 57: WIRING DIAGRAM

Scheme 58

Scheme 58: PROCEDURE
Scheme 58: PROCEDURE
  1. INSPECT OUTER MIRROR CONTROL ECU (POWER SOURCE) Disconnect the E66 connector. Measure the voltage and resistance according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition E66-3 (B) - Body ground Always 10 to 14 V E66-4 (ACC) - Body ground Engine switch on (ACC) 10 to 14 V Standard resistance Tester Connection Condition Specified Condition E66-9 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE WIRE HARNESS OK --> PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(/lexus/es/xv40-facelift-2009-2012/remont/mirrors/#power-mirror-control-wo-memory-inspection__problem-symptoms-table) PROBLEM SYMPTOMS TABLE

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