DESCRIPTION
If any of the M1, M2 or M3 seat memory switch is pressed, the outer mirror control ECU assembly (driver door) detects the switch operation and sends the seat memory switch signal to the main body ECU (multiplex network body ECU) via CAN communication. The main body ECU (multiplex network body ECU) sends the reproduction signal to each outer mirror control ECU assembly via CAN communication. When receiving the reproduction signal, 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.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
PROCEDURE
1. | CHECK SEAT MEMORY SWITCH FUNCTION |
(a) When any seat memory switch (M1, M2 or M3) is pressed, check that the driver seat moves to the memorized position.
Click here
OK:
Driver seat moves to the memorized position.
NG | GO TO FRONT POWER SEAT CONTROL SYSTEM (Power Seat does not Return to Memorized Position) |
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2. | CHECK ELECTRICAL REMOTE CONTROL MIRROR FUNCTION |
(a) Check the electrical remote control mirror function.
Click here
OK:
Electrical remote control mirror function is normal.
NG | GO TO OTHER DIAGNOSTIC PROCEDURE (Power Mirror cannot be Adjusted with Power Mirror Switch) |
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3. | READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Mirror L / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Mirror L > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
Mirror Memory No.1 | Mirror position memorized in memory switch M1 | OFF or ON | OFF: Not memorized ON: Memorized | - |
Mirror Memory No.2 | Mirror position memorized in memory switch M2 | OFF or ON | OFF: Not memorized ON: Memorized | - |
Mirror Memory No.3 | Mirror position memorized in memory switch M3 | OFF or ON | OFF: Not memorized ON: Memorized | - |
Tester Display |
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Mirror Memory No.1 |
Mirror Memory No.2 |
Mirror Memory No.3 |
OK:
ON (Memorized) appears on the screen.
NG | GO TO OTHER DIAGNOSTIC PROCEDURE (Power Mirror Surface Position is not Memorized) |
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4. | CHECK MEMORY AND REACTIVATION FUNCTION |
(a) Turn the engine switch on (IG). |
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(b) Using the multiplex network master switch assembly, turn the mirror surface to the fully left position.
(c) Press the M1 switch while the SET switch is being pressed.
(d) Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.
(e) Using the multiplex network master switch assembly, turn the mirror surface to the fully right position.
(f) Press the M1 switch.
(g) Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the memorized fully left position.
Result | Proceed to |
---|---|
Memory and reactivation functions on both mirrors are not normal | A |
Memory and reactivation functions on driver door mirror are not normal (ecxept TMMC Made) | B |
Memory and reactivation functions on driver door mirror are not normal (for TMMC Made) | C |
Memory and reactivation functions on front passenger door mirror are not normal (ecxept TMMC Made) | D |
Memory and reactivation functions on front passenger door mirror are not normal (for TMMC Made) | E |
A | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
C | GO TO STEP 7 |
D | GO TO STEP 10 |
E | GO TO STEP 12 |
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5. | REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) |
(a) Temporarily replace the outer rear view mirror assembly (driver door) with a new or known good one.
Click here
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6. | CHECK MEMORY AND REACTIVATION FUNCTION |
(a) Turn the engine switch on (IG). |
|
(b) Using the multiplex network master switch assembly, turn the mirror surface to the fully left position.
(c) Press the M1 switch while the SET switch is being pressed.
(d) Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.
(e) Using the multiplex network master switch assembly, turn the mirror surface to the fully right position.
(f) Press the M1 switch.
(g) Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the memorized fully left position.
OK | END (OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) WAS DEFECTIVE) |
NG | REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) |
7. | INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) (WIRE HARNESS) |
(a) Remove the outer mirror actuator assembly (driver door).
Click here
(b) Disconnect the z12 outer mirror control ECU assembly (driver door) connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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NG | REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) |
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8. | REPLACE OUTER MIRROR ACTUATOR ASSEMBLY (DRIVER DOOR) |
(a) Temporarily replace the outer mirror actuator assembly (driver door) with a new or known good one.
Click here
|
9. | CHECK MEMORY AND REACTIVATION FUNCTION |
(a) Turn the engine switch on (IG). |
|
(b) Using the multiplex network master switch assembly, turn the mirror surface to the fully left position.
(c) Press the M1 switch while the SET switch is being pressed.
(d) Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.
(e) Using the multiplex network master switch assembly, turn the mirror surface to the fully right position.
(f) Press the M1 switch.
(g) Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the memorized fully left position.
OK | END (OUTER MIRROR ACTUATOR ASSEMBLY (DRIVER DOOR) WAS DEFECTIVE) |
NG | REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) |
10. | REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) |
(a) Temporarily replace the outer rear view mirror assembly (front passenger door) with a new or known good one.
Click here
|
11. | CHECK MEMORY AND REACTIVATION FUNCTION |
(a) Turn the engine switch on (IG). |
|
(b) Using the multiplex network master switch assembly, turn the mirror surface to the fully left position.
(c) Press the M1 switch while the SET switch is being pressed.
(d) Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.
(e) Using the multiplex network master switch assembly, turn the mirror surface to the fully right position.
(f) Press the M1 switch.
(g) Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the memorized fully left position.
OK | END (OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) WAS DEFECTIVE) |
NG | REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER DOOR) |
12. | INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) (WIRE HARNESS) |
(a) Remove the outer mirror actuator assembly (front passenger door).
Click here
(b) Disconnect the z13 outer mirror control ECU assembly (front passenger door) connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
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NG | REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) |
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13. | REPLACE OUTER MIRROR ACTUATOR ASSEMBLY (FRONT PASSENGER DOOR) |
(a) Temporarily replace the outer mirror actuator assembly (front passenger door) with a new or known good one.
Click here
|
14. | CHECK MEMORY AND REACTIVATION FUNCTION |
(a) Turn the engine switch on (IG). |
|
(b) Using the multiplex network master switch assembly, turn the mirror surface to the fully left position.
(c) Press the M1 switch while the SET switch is being pressed.
(d) Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.
(e) Using the multiplex network master switch assembly, turn the mirror surface to the fully right position.
(f) Press the M1 switch.
(g) Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the memorized fully left position.
OK | END (OUTER MIRROR ACTUATOR ASSEMBLY (FRONT PASSENGER DOOR) WAS DEFECTIVE) |
NG | REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER DOOR) |
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Sfi System: Terminals Of Ecm
TERMINALS OF ECM HINT: The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistanc ...
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Audio And Visual System (for 12.3 Inch Display): How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the audio and visual system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS
When troubleshooting, check that the problem symptoms ...