Lexus NX: Reverse Shift-linked Function of Power Mirrors does not Operate
DESCRIPTION
Hybrid vehicle control ECU 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.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this problem.
Click here
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If the main body ECU (multiplex network body ECU) is replaced, refer to Registration.
Click here
HINT:
The reverse shift-linked function will not activate when the mirror select switch is in the neutral position (off).
PROCEDURE
| 1. | CHECK OUTER REAR VIEW MIRROR ASSEMBLY FUNCTION (MEMORY AND REACTIVATION OPERATION) |
(a) Check that the memory and reactivation function operates.
Click here
OK:
Memory and reactivation function operates normally.
| NG | .gif) | GO TO OTHER FLOWCHART (Power Mirror Surface Position is not Memorized) |
|
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| 2. | CHECK FOR DTC (HYBRID CONTROL SYSTEM) |
(a) Check for DTCs.
Click here
OK:
DTCs output does not occur.
| NG | | GO TO HYBRID CONTROL SYSTEM |
|
| 3. | CHECK SHIFT POSITION INDICATOR FUNCTION |
(a) Check that the shift position indicator operates.
Click here
OK:
Shift position indicator operates normally.
| NG | | GO TO METER / GAUGE SYSTEM |
|
| 4. | CONFIRM MALFUNCTIONING PARTS |
(a) Check the malfunctioning outer rear view mirror assembly.
Click here
| Result | Proceed to |
|---|---|
| Both the left and right outer rear view mirror assembly do not operate | A |
| Outer rear view mirror assembly LH does not operate | B |
| Outer rear view mirror assembly RH does not operate | C |
| A | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| C | | GO TO STEP 6 |
|
| 5. | CHECK OUTER REAR VIEW MIRROR ASSEMBLY LH |
(a) Temporarily replace the outer rear view mirror assembly LH with a new or normally functioning one.
Click here
(b) Check that the reverse shift-linked function operates.
Click here
OK:
Reverse shift-linked function operates normally.
| OK | | END (OUTER REAR VIEW MIRROR ASSEMBLY LH IS DEFECTIVE) |
| NG | | REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH |
| 6. | CHECK OUTER REAR VIEW MIRROR ASSEMBLY RH |
(a) Temporarily replace the outer rear view mirror assembly RH with a new or normally functioning one.
Click here
(b) Check that the reverse shift-linked function operates.
Click here
OK:
Reverse shift-linked function operates normally.
| OK | | END (OUTER REAR VIEW MIRROR ASSEMBLY RH IS DEFECTIVE) |
| NG | | REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH |
READ NEXT:
Parts Location
PARTS LOCATION ILLUSTRATION *1 OUTER REAR VIEW MIRROR ASSEMBLY LH *2 OUTER REAR VIEW MIRROR ASSEMBLY RH *3 OUTER MIRROR LH *4 OUTER MIRROR RH *5 NO. 2 ENGINE ROOM RELAY BLOCK
System Diagram
SYSTEM DIAGRAM Power Mirror Control System Mirror Heater System
SEE MORE:
Removal
REMOVAL PROCEDURE 1. REMOVE MULTI-DISPLAY ASSEMBLY Click here 2. REMOVE DOOR SCUFF PLATE ASSEMBLY LH Click here 3. REMOVE COWL SIDE TRIM BOARD LH Click here 4. REMOVE REAR CONSOLE ARMREST ASSEMBLY Click here 5. REMOVE UPPER REAR CONSOLE PANEL Click here 6. REMOVE UPPER NO. 1 CONSOLE P
Components
COMPONENTS ILLUSTRATION *A for 8 Speakers *B for 10 Speakers *C for 14 Speakers - - *1 FRONT DOOR OPENING TRIM WEATHERSTRIP LH *2 FRONT NO. 2 SPEAKER ASSEMBLY *3 FRONT PILLAR GARNISH ASSEMBLY LH *4 NO. 1 INSTRUMENT PANEL SPEAKER PANEL SUB-ASSEMBLY *5 FRO
