Lexus NX: Initialization
INITIALIZATION
INITIALIZE MULTIPLEX NETWORK DOOR ECU
NOTICE:
Initialization of the multiplex network door ECU (back door initial position learning) is necessary if the following work procedures are performed while the back door is open.
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The cable to the negative (-) auxiliary battery terminal is connected.
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A power source system fuse of the power back door system is disconnected and reconnected.
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The multiplex network door ECU is replaced or the connectors are disconnected.
The power back door does not operate unless the multiplex network door ECU is initialized.
HINT:
Initialization is not necessary if the above procedures are performed while the back door is closed.
(a) Initialization operation
(1) Fully close the back door by hand.
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PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of
DTC CHECK / CLEAR CHECK FOR DTC (a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Bod
TERMINALS OF ECU CHECK MULTIPLEX NETWORK DOOR ECU (a) Disconnect the Y26 and Y27 multiplex network door ECU connectors. (b) Measure the voltage and resistance according to the value(s) in the table b
SEE MORE:
DESCRIPTION If code verification cannot be performed in the vehicle interior, there may be problems with the communication between the vehicle (No. 1 indoor electrical key antenna assembly (front floor), No. 2 indoor electrical key antenna assembly (rear floor) or No. 3 indoor electrical key antenna
SYSTEM DESCRIPTION POWER DOOR LOCK CONTROL SYSTEM DESCRIPTION (a) The power door lock system locks/unlocks all doors. The main body ECU (multiplex network body ECU) receives lock/unlock request signals from a door control switch or the driver door key lock and unlock switch. Then, the main body ECU
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